CN108923649A - A kind of fast charge power supply step-up/step-down circuit and fast charge power supply - Google Patents
A kind of fast charge power supply step-up/step-down circuit and fast charge power supply Download PDFInfo
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- CN108923649A CN108923649A CN201810582531.4A CN201810582531A CN108923649A CN 108923649 A CN108923649 A CN 108923649A CN 201810582531 A CN201810582531 A CN 201810582531A CN 108923649 A CN108923649 A CN 108923649A
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- fast charge
- low pressure
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of fast charge power supply step-up/step-down circuit and fast charge power supplys, fast charge power supply step-up/step-down circuit includes several output ends Vbus, input terminal Vbat, boost switching converter, low pressure difference linearity controller, output voltage control module and electric source modes control module, boost switching converter is in parallel with low pressure difference linearity controller, the input terminal of the two parallel connection connects input terminal Vbat, the output end of the two is separately connected each output end Vbus, output voltage control module and electric source modes control module are connect with boost switching converter and the low pressure difference linearity controller respectively, this product control is simple, reduce design difficulty, it is easily achieved fully integrated, reduce system cost；The delivery efficiency of boost switching converter will not be had an impact, very big advantage is occupied in cost and efficiency.
Description
Technical field
The present invention relates to fast charge technical field, in particular to a kind of fast charge power supply step-up/step-down circuit and fast charge power supply.
Background technique
The appearance of the portable mobile apparatus such as tablet computer, smart phone is that the work and life of people is brought greatly
It is convenient, people be also to the frequency of use and degree of dependence of these equipment it is higher and higher, these equipment are passed through since high frequency uses
It is often in low battery state, this is also to allow the thing of most users anxiety the most.Less may be used in current battery technology and capacity
In the case where capable of being substantially improved, carrying out rapidly charging to equipment using the time of fragmentation is currently to solve the problems, such as this, is mentioned
The optimal path of user experience is risen, then various fast charge technologies are come into being, and major cell phone manufacturer is also in time proposed support
The mobile phone of various fast charges, and using this as a big attraction of publicity, while having expedited the emergence of the fast of third party's fast charge charging accessories market
Speed development.
Current fast charge technology is broadly divided into two major classes：The first kind is fast using high pass QC fast charge as the high voltage-small current of representative
Technology is filled, charger output voltage generally requires as 5V to 12V；Second class is using Huawei's SCP fast charge as the big electricity of the low pressure of representative
Fast charge technology is flowed, charger output voltage generally requires as 3V to 5.5V.Two class fast charge technologies are each has something to recommend him, and high voltage-small current is fast
It fills technology and realizes fast charge in the case where not needing and upgrading traditional charging interface and charge cable, but conversion when due to high pressure
Efficiency is relatively low, which will increase cell-phone heating amount when charging；The transformation efficiency of low-voltage, high-current fast charge technology compared with
Height significantly reduces cell-phone heating amount when charging, but since traditional charging interface and charge cable maximum can only be supported
The electric current of 2A, so the fast charge technology needs to upgrade charging interface and charge cable, to support the electric current of 3A or more.
At present on the market, it supports the mobile phone of these two types of fast charge technologies simultaneously and deposits, to provide while compatible these two types of fast
The charger for filling technology, there are certain difficulty.Especially for mobile power source product, not according to the remaining electricity of mobile power source
Together, the cell voltage Vbat range of mobile power source is generally 3.0V to 4.2V, and traditional boost switching converter output framework can
To export the free voltage for being higher than Vbat, the requirement of high voltage-small current fast charge output voltage 5V to 12V can be covered, to realize
High voltage-small current fast charge.But traditional boost switching converter output framework can not export the voltage lower than Vbat, it can not be complete
All standing low-voltage, high-current fast charge exports the requirement of 3.0V to 5.5V, so traditional boost switching converter output framework is realized
Low-voltage, high-current fast charge haves the defects that in structure.
There are mainly two types of existing solutions：The first is to export framework using buck switch converters, works as application
Vbus be lower than Vbat when, work in step-down switching converter output state；When the Vbus of application is higher than Vbat, work is being risen
Compress switch converter output state, and the structure control is more complex, at the same need four big power tubes, it is difficult to realize it is fully integrated,
It is not dominant in cost；Second is a low voltage difference line of connecting on the basis of traditional boost switching converter exports framework
Property converter, when the Vbus of application is lower than Vbat, the down tube of boost switching converter is closed, upper tube normal open, by with upper tube
Concatenated low pressure difference linearity converter provides output；When the Vbus of application is higher than Vbat, boost switching converter is opened, and is passed through
Boost switching converter and the low pressure difference linearity converter of series connection with it provide output, and the structure is due to using tandem junction
Structure, low pressure difference linearity converter can have an impact boost switching converter delivery efficiency, so not dominant in efficiency.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of fast charge power supply step-up/step-down circuit and fast charges
Power supply makes fast charge power supply while being compatible with high voltage-small current fast charge and two class fast charge function of low-voltage, high-current fast charge, meanwhile, it improves fast
Efficiency is filled, design difficulty is reduced, reduces system cost.
To achieve the above object, the technical scheme is that：
A kind of fast charge power supply step-up/step-down circuit, it is characterised in that：It is connect including several output ends Vbus, with battery defeated
Enter to hold Vbat, the boost switching converter for carrying out boosting rectifier control to cell voltage, for carrying out decompression control to cell voltage
Low pressure difference linearity converter, output voltage control module and the electric source modes control module of system, the boost switching converter with
The low pressure difference linearity controller is in parallel, the input terminal connection input terminal Vbat of the two parallel connection, and the output end of the two is respectively and often
One output end Vbus connection, the output voltage control module respectively with the boost switching converter and the low voltage difference line
Property controller connection, institute Shen after the output voltage control module is used to be linked up according to charging terminal and mobile power source fast charge agreement
The voltage of the output charging terminal application of Vbus voltage adjustment boost switching converter or low pressure difference linearity converter please, it is described
Electric source modes control module is connect with the boost switching converter and the low pressure difference linearity controller respectively, the power supply mould
Formula control module is used to be requested according to the voltage mode of each charging terminal, and corresponding selection is opened boost switching converter and filled
Electricity or control open low pressure difference linearity converter and charge, and when the Vbus of charging terminal request is higher than Vbat, selection
Boost switching converter charges；When charging terminal request Vbus be lower than Vbat when, select low pressure difference linearity converter into
Row charging.
Further, boost switching converter includes inductance L, boosted switch control module, the first power tube M1 and second
The first end of power tube M2, the inductance L connect input terminal Vbat, and the second end of the inductance L is separately connected first function
The drain electrode of rate pipe M1 and second power tube or source electrode, the grid of the first power tube M1 and the second power tube M2's
Grid is connect with the boosted switch control module respectively, the boosted switch control module also with the output voltage control mould
Block connection, corresponding, the source electrode of the second power tube M2 or drain electrode connect the output end Vbus, corresponding, and described first
The source electrode or grounded drain of power tube M1.
Further, the low pressure difference linearity converter includes low pressure difference linearity control module and acts on for linear regulation
Third power tube M3, the input terminal of the low pressure difference linearity control module connects the output of the output voltage control module
End, the output end of the low voltage difference line type control module connect the grid of the third power tube M3, the third power tube M3
Drain electrode and source electrode connect respectively with the input terminal Vbat and the output end Vbus.
Further, the output voltage control module includes the communication for carrying out the communication of fast charge agreement with charging terminal
Interface, the output voltage control module further include the logic list for carrying out fast charge protocol identification and communication with charging terminal
The logic unit of member, the output voltage control module carries out fast charge protocol identification and ditch by communication interface and charging terminal
It is logical, applied Vbus voltage after the output voltage control module is linked up according to fast charge protocol logic unit and charging terminal,
Adjust the output voltage of boost switching converter or low pressure difference linearity converter.
Further, the electric source modes control module includes electric source modes and access tube control module, several switches
Access, the electric source modes and access tube control module include communication module and connect respectively with the communication module several
Voltage comparator, the output end of each voltage comparator are correspondingly connected with a biswitch access, each described biswitch is logical
Road includes first switch and the second switch, the output of the control terminal voltage comparator of the control terminal and second switch of first switch
Connection, boost switching converter connect by the conduction terminal of first switch with output end Vbus, and the conduction terminal of second switch is by low pressure
Poor linear quantizer is equally connect with output end Vbus, makes two conduction terminal connections switched of each switch ways
One output end Vbus, voltage comparator is for comparing charging terminal and the communication module charging terminal after the communication of fast charge agreement
The size of the Vbus and mobile power source cell voltage Vbat of request, and control signal is exported according to voltage comparison result, control is opened
Open one of switch in switch ways.
Preferably, MOS switch pipe, triode can be used in the first switch in each described switch ways and second switch
Or relay switch or any combination thereof.
A kind of fast charge power supply, including shell, battery, mobile power source fast charge control circuit, the mobile power source fast charge control
Circuit includes several output ends Vbus, connect with battery input terminal Vbat, for carrying out boosting rectifier control to cell voltage
Boost switching converter, the low pressure difference linearity converter for carrying out decompression control to cell voltage, output voltage control module
With electric source modes control module, the boost switching converter is in parallel with the low pressure difference linearity controller, in parallel defeated of the two
Enter end connection input terminal Vbat, the output end of the two is connect with each output end Vbus respectively, the output voltage control mould
Block is connect with the boost switching converter and the low pressure difference linearity controller respectively, and the output voltage control module is used for
Applied Vbus voltage adjustment boost switching converter or low pressure after being linked up according to charging terminal and mobile power source fast charge agreement
The voltage of the output charging terminal application of poor linear quantizer, the electric source modes control module become with the boosted switch respectively
Parallel operation is connected with the low pressure difference linearity controller, and the electric source modes control module is used for the voltage according to each charging terminal
Mode request, corresponding selection, which opens boost switching converter and charge or control unlatching low pressure difference linearity converter, is filled
Electricity, and when the Vbus of charging terminal request is higher than Vbat, select boost switching converter to charge；When charging terminal is requested
Vbus be lower than Vbat when, select low pressure difference linearity converter charge.
Further, boost switching converter includes inductance L, boosted switch control module, the first power tube M1 and second
The first end of power tube M2, the inductance L connect input terminal Vbat, and the second end of the inductance L is separately connected first function
The drain electrode of rate pipe M1 and second power tube or source electrode, the grid of the first power tube M1 and the second power tube M2's
Grid is connect with the boosted switch control module respectively, the boosted switch control module also with the output voltage control mould
Block connection, corresponding, the source electrode of the second power tube M2 or drain electrode connect the output end Vbus, corresponding, and described first
The source electrode or grounded drain of power tube M1.
Further, the low pressure difference linearity controller includes low voltage difference line type control module and acts on for Serial regulation
Third power tube M3, the input terminal of the low voltage difference line type control module connects the output of the output voltage control module
End, the output end of the low voltage difference line type control module connect the grid of the third power tube M3, the third power tube M3
Drain electrode and source electrode connect respectively with the input terminal Vbat and the electric source modes control circuit.
Further, the output voltage control module include setting on the housing be used for and charging terminal carry out
The communication interface that fast charge agreement is linked up, the output voltage control module further include for carrying out the knowledge of fast charge agreement with charging terminal
Not and the logic unit of communication, the logic unit carry out fast charge protocol identification and communication by communication interface and charging terminal,
Applied Vbus voltage after the output voltage control module is linked up according to fast charge protocol logic unit and charging terminal, adjustment
The output voltage of boost switching converter or low pressure difference linearity converter.
Further, the electric source modes control module includes electric source modes and access tube control module, several switches
Access, the electric source modes and access tube control module include communication module and connect respectively with the communication module several
Voltage comparator, the output end of each voltage comparator are correspondingly connected with a biswitch access, each described biswitch is logical
Road includes first switch and the second switch, the output of the control terminal voltage comparator of the control terminal and second switch of first switch
Connection, boost switching converter connect by the conduction terminal of first switch with output end Vbus, and the conduction terminal of second switch is by low pressure
Poor linear quantizer is equally connect with output end Vbus, makes two conduction terminal connections switched of each switch ways
One output end Vbus, voltage comparator is for comparing charging terminal and the communication module charging terminal after the communication of fast charge agreement
The size of the Vbus and mobile power source cell voltage Vbat of request, and control signal is exported according to voltage comparison result, control is opened
Open one of switch in switch ways.
Preferably, MOS switch pipe, triode can be used in the first switch in each described switch ways and second switch
Or relay switch or any combination thereof.
Beneficial effects of the present invention are：The low pressure all the way in parallel on the basis of traditional boost switching converter exports framework
Poor linear quantizer, for buck switch converters output framework, control is simple, reduces design difficulty, simultaneously
Do not need four big switching power tubes, it is easy to accomplish it is fully integrated, reduce system cost；Relative in traditional boosted switch change
Parallel operation exports the mode of one low pressure difference linearity converter of series connection on the basis of framework, using the side of low pressure difference linearity converter in parallel
Formula, the delivery efficiency of boost switching converter will not be had an impact by adding the low pressure difference linearity converter come, so compared to
Framework is exported by buck switch converters at present, or is connected on the basis of traditional boost switching converter exports framework
The mode of one low pressure difference linearity converter occupies very big advantage in cost and efficiency.
Detailed description of the invention
Fig. 1 is the general principles figure of fast charge power supply step-up/step-down circuit of the invention；
Fig. 2 is the physical circuit schematic diagram of the embodiment of the present invention one；
Fig. 3 is the physical circuit schematic diagram of the embodiment of the present invention two.
Specific embodiment
It is carried out below with reference to technical effect of the schematic diagram to design of the invention, specific structure and generation clear, complete
Ground description, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is of the invention one
Section Example, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not paying creativeness
Other embodiments obtained, belong to the scope of protection of the invention under the premise of labour.
As shown in Figure 1, a kind of fast charge power supply step-up/step-down circuit, connect defeated including several output ends Vbus, with battery
Enter to hold Vbat, the boost switching converter for carrying out boosting rectifier control to cell voltage, for carrying out decompression control to cell voltage
Low pressure difference linearity converter, output voltage control module and the electric source modes control module of system, the boost switching converter with
The low pressure difference linearity controller is in parallel, the input terminal connection input terminal Vbat of the two parallel connection, and the output end of the two is respectively and often
One output end Vbus connection, the output voltage control module respectively with the boost switching converter and the low voltage difference line
Property controller connection, institute Shen after the output voltage control module is used to be linked up according to charging terminal and mobile power source fast charge agreement
The voltage of the output charging terminal application of Vbus voltage adjustment boost switching converter or low pressure difference linearity converter please, it is described
Electric source modes control module is connect with the boost switching converter and the low pressure difference linearity controller respectively, the power supply mould
Formula control module is used to be requested according to the voltage mode of each charging terminal, and corresponding selection is opened boost switching converter and filled
Electricity or control open low pressure difference linearity converter and charge, and when the Vbus of charging terminal request is higher than Vbat, selection
Boost switching converter charges；When charging terminal request Vbus be lower than Vbat when, select low pressure difference linearity converter into
Row charging.
The electronic equipments such as mobile phone, computer can be used in charging terminal, and the present embodiment charging terminal uses mobile phone, and mobile phone access moves
After dynamic power supply, default provides output by boost switching converter, and low pressure difference linearity converter is closed, and Vbus exports 5V voltage.Hand
After machine and mobile power source carry out the communication of fast charge agreement, continue to operate in next step according to the result of communication, if mobile phone is not supported fastly
Function is filled, then mobile power source maintains always default conditions, and Vbus exports 5V and charges to mobile phone；If mobile phone supports fast charge
Function, and apply Vbus be greater than mobile power source cell voltage Vbat when, then be always maintained at provided by boost switching converter it is defeated
Out, low pressure difference linearity converter is closed, and output voltage control module adjusts boost switching converter according to the voltage of mobile phone application
Output voltage, with voltage value needed for meeting mobile phone fast charge；If mobile phone supports fast charge function, and the Vbus applied is less than shifting
When dynamic power-supply battery voltage Vbat, then switches to low pressure difference linearity converter and output is provided, boost switching converter is closed, output
Voltage control module adjusts the output voltage of low pressure difference linearity converter according to the voltage of mobile phone application, to meet mobile phone fast charge institute
The voltage value needed.It is defeated by low pressure difference linearity converter all the way in parallel on the basis of traditional boost switching converter exports framework
Framework out, according to the comparison result of the Vbus voltage of mobile phone application and mobile power source cell voltage Vbat, selection is opened by boosting
It closes converter and output is provided, or provide output by low pressure difference linearity converter, to realize to high voltage-small current fast charge and low
Press the full compatibility of high current fast charge.
Wherein, boost switching converter includes inductance L, boosted switch control module, the first power tube M1 and the second power
The first end of pipe M2, the inductance L connect input terminal Vbat, and the second end of the inductance L is separately connected first power tube
The drain electrode of M1 and second power tube or source electrode, the grid of the grid of the first power tube M1 and the second power tube M2
It is connect respectively with the boosted switch control module, the boosted switch control module also connects with the output voltage control module
It connects, corresponding, the source electrode of the second power tube M2 or drain electrode connect the output end Vbus, corresponding, first power
The source electrode or grounded drain of pipe M1.
The low pressure difference linearity controller includes low voltage difference line type control module and the third function for Serial regulation effect
Rate pipe M3, the input terminal of the low voltage difference line type control module connects the output end of the output voltage control module, described low
The output end of pressure difference line type control module connects the grid of the third power tube M3, the drain electrode of the third power tube M3 and source
Pole is connect with the input terminal Vbat and the electric source modes control circuit respectively.
The output voltage control module includes the communication interface for carrying out the communication of fast charge agreement with charging terminal, described
Output voltage control module further includes the logic unit for carrying out fast charge protocol identification and communication with charging terminal, the output
The logic unit of voltage control module carries out fast charge protocol identification and communication, the output electricity by communication interface and charging terminal
Applied Vbus voltage after voltage-controlled molding root tuber is linked up according to fast charge protocol logic unit and charging terminal, adjustment boosted switch become
The output voltage of parallel operation or low pressure difference linearity converter.Logic unit in the present embodiment realizes that MCU is also connected with based on MCU
DAC converter, charging terminal connect communication with MCU by the communication protocol of communication interface, pass through the Digital Logical Circuits on MCU
Judge the voltage requested in charging terminal, MCU controls signal according to the voltage output requested in charging terminal, then turns by DAC
Parallel operation exports analog electrical signal to boosted switch control module or low pressure difference linearity control module.
For electric source modes control module, two embodiments are listed, the two embodiments are placed on mobile power source fast charge
In control circuit, principle and structure are as follows：
As shown in Fig. 2, embodiment one：
Include：It is input interface Vbat, output interface Vbus, boosted switch control module, low pressure difference linearity control module, defeated
Voltage control module, electric source modes and access tube control module, the first power tube M1, the second power tube M2, third power tube out
M3, inductance L, the first access tube M4, alternate path pipe M5, wherein M1, M2, M3, M4, M5 can be used but be not limited to NMOS
Pipe, PMOS tube, triode, can also be replaced by relay switch etc. or NMOS tube, PMOS tube, triode and relay are handed over
Fork uses, as long as the device of on-off action can be played all in the application protection scope, the present embodiment inductance L, the first power tube
M1, the second power tube M2, boosted switch control module collectively form boost switching converter；Third power tube M3, low voltage difference line
Property control module collectively forms low pressure difference linearity converter.
Boost switching converter exports the stable adjustable voltage higher than Vbat.The output of low pressure difference linearity converter is steady
The fixed adjustable voltage lower than Vbat.The logic unit of the output voltage control module is whole by communication interface and charging
End applied Vbus voltage adjustment boost switching converter and low pressure difference linearity transformation after carrying out fast charge protocol identification and linking up
The output voltage of device.Electric source modes control module includes electric source modes and access tube control module, M4 and M5, wherein electric source modes
And access tube control module includes communication module and voltage comparator, voltage comparator is for comparing charging terminal and communication module
The size of charging terminal is requested after the communication of fast charge agreement Vbus and power-supply battery voltage Vbat, and knot is compared according to voltage
One of switch in switch ways is opened in fruit output control signal, control.When the Vbus of application is greater than Vbat, power supply mould
Formula and access tube control module output control signal EN_BOOST=1, EN_LDO=0, the first access tube M4 are opened, alternate path
Pipe M5 is closed, and output voltage Vbus is provided by boost switching converter；When the Vbus of application is less than Vbat, electric source modes and logical
Road pipe control module output control signal EN_BOOST=0, EN_LDO=1, the first access tube M4 is closed, and alternate path pipe M5 is opened
It opens, output voltage Vbus is provided by low pressure difference linearity converter.
As shown in figure 3, embodiment two：
Lower mask body lists a particular circuit configurations of the electric source modes control module for having used the present embodiment, packet
Contain：Input interface Vbat, the first output interface Vbus1, the second output interface Vbus2, the n-th output interface Vbusn, boosted switch
Control module, low pressure difference linearity control module, output voltage control module, electric source modes and access tube control module, the first function
Rate pipe M1, the second power tube M2, third power tube M3, inductance L, the first access tube M11 and M12, alternate path pipe M21 and M22,
N-th access tube Mn1 and Mn2, wherein M1, M2, M3, M11, M12, M21, M22, Mn1, Mn2 can be used but be not limited to NMOS
Pipe, PMOS tube, triode, can also be replaced by relay switch etc. or NMOS tube, PMOS tube, triode and relay are handed over
Fork uses, as long as the device of on-off action can be played all in the application protection scope, wherein inductance L, the first power tube M1, the
Two power tube M2, boosted switch control module collectively form boost switching converter；Wherein third power tube M3, low pressure difference linearity
Control module collectively forms low pressure difference linearity converter, and electric source modes control module includes electric source modes and access tube control module
And its above-mentioned n access tube of control, electric source modes and access tube control module include communication module and n voltage comparator,
Each voltage comparator corresponds to an access tube, and communication module can be used for carrying out agreement communication with multiple charging terminals, and sentence
Break the charge request of each charging terminal, corresponding, each voltage comparator is for comparing charging terminal and communication module
The size of charging terminal is requested after the communication of fast charge agreement Vbus and power-supply battery voltage Vbat, and knot is compared according to voltage
One of switch in switch ways is opened in fruit output control signal, control.
Boost switching converter exports the stable adjustable voltage higher than Vbat.The output of low pressure difference linearity converter is steady
The fixed adjustable voltage lower than Vbat.Applied Vbus voltage after output voltage control module is linked up according to fast charge agreement
Adjust the output voltage of boost switching converter and low pressure difference linearity converter.
The embodiment is the power supply that above-mentioned power supply structure is applied to multioutlet, and all delivery outlets share same set of electricity
Source, any delivery outlet can be realized while be compatible with high voltage-small current fast charge and two class fast charge technology of low-voltage, high-current fast charge.Example
Such as, when only M delivery outlet access mobile phone, electric source modes and access tube control module open M delivery outlet access tube Mm1 or
The access tube of Mm2, other delivery outlets are closed, while electric source modes and access tube control module are according to M delivery outlet application
The comparison result of the cell voltage Vbat of Vbusm and mobile power source, decision be output is provided by boost switching converter, or by
Low pressure difference linearity converter provides output, when the Vbusm of application is greater than Vbat, electric source modes and the output of access tube control module
It controls signal EN_BOOSTM=1, EN_LDOM=0, the M access tube Mm1 to open, Mm2 is closed, and output voltage Vbusm is by boosting
Switch converters provide；When the Vbusm of application is less than Vbat, electric source modes and access tube control module output control signal
EN_BOOSTM=0, EN_LDOM=1, the M access tube Mm1 are closed, and Mm2 is opened, and output voltage Vbusm is become by low pressure difference linearity
Parallel operation provides.When there are two or more than two delivery outlets simultaneously be inserted into mobile phone when, electric source modes and access tube control module are beaten
The delivery outlet of insertion mobile phone is opened, the delivery outlet for being not inserted into mobile phone remains turned-off, and all delivery outlets opened all are opened by boosting
It closes converter and output is provided, the considerations of for safety, mobile power source will not receive the fast charge application of mobile phone, boosted switch at this time
Converter exports 5V, and the power supply that the mobile phone accessed for each provides 5V simultaneously charges.
This fast charge power supply step-up/step-down circuit due to only on the basis of traditional boost switching converter exports framework simultaneously
Low pressure difference linearity converter controls simply for buck switch converters output framework, reduces design connection all the way
Difficulty, while not needing four big switching power tubes, it is easy to accomplish it is fully integrated, reduce system cost；Relative to traditional
Boost switching converter exports the mode of one low pressure difference linearity converter of series connection on the basis of framework, and this patent is using low pressure in parallel
The mode of poor linear quantizer, the delivery efficiency of boost switching converter will not be generated by adding the low pressure difference linearity converter come
It influences.So compared to framework is exported by buck switch converters at present, or it is defeated in traditional boost switching converter
Out on the basis of framework connect a low pressure difference linearity converter mode, very big advantage is occupied in cost and efficiency.
Using the fast charge power supply of above-mentioned fast charge power supply step-up/step-down circuit, including shell, battery, mobile power source fast charge control electricity
Road, the mobile power source fast charge control circuit includes several output ends Vbus, the input terminal Vbat that is connect with battery, for pair
Cell voltage carries out the boost switching converter of boosting rectifier control, the low pressure difference linearity for carrying out decompression control to cell voltage becomes
Parallel operation, output voltage control module and electric source modes control module, the boost switching converter and the low pressure difference linearity control
Device processed is in parallel, and the input terminal of the two parallel connection connects input terminal Vbat, and the output end of the two connects with each output end Vbus respectively
It connects, the output voltage control module is connect with the boost switching converter and the low pressure difference linearity controller respectively, institute
Output voltage control module is stated for applied Vbus voltage tune after linking up according to charging terminal and mobile power source fast charge agreement
The voltage of the output charging terminal application of whole boost switching converter or low pressure difference linearity converter, the electric source modes control mould
Block is connect with the boost switching converter and the low pressure difference linearity controller respectively, and the electric source modes control module is used for
It is requested according to the voltage mode of each charging terminal, corresponding selection opens boost switching converter and charge or control unlatching
Low pressure difference linearity converter charges, and when the Vbus of charging terminal request is higher than Vbat, selects boost switching converter
It charges；When the Vbus of charging terminal request is lower than Vbat, low pressure difference linearity converter is selected to charge.
Boost switching converter includes inductance L, boosted switch control module, the first power tube M1 and the second power tube M2,
The first end of the inductance L connects input terminal Vbat, and the second end of the inductance L is separately connected the first power tube M1 and institute
State drain electrode or the source electrode of the second power tube, the grid of the grid of the first power tube M1 and the second power tube M2 respectively with
The boosted switch control module connection, the boosted switch control module is also connect with the output voltage control module, right
It answers, the source electrode of the second power tube M2 or drain electrode connect the output end Vbus, and it is corresponding, the first power tube M1's
Source electrode or grounded drain.
The low pressure difference linearity controller includes low voltage difference line type control module and the third function for Serial regulation effect
Rate pipe M3, the input terminal of the low voltage difference line type control module connects the output end of the output voltage control module, described low
The output end of pressure difference line type control module connects the grid of the third power tube M3, the drain electrode of the third power tube M3 and source
Pole is connect with the input terminal Vbat and the electric source modes control circuit respectively.
The output voltage control module include setting on the housing be used for and charging terminal carry out fast charge agreement
The communication interface of communication, the output voltage control module further include for carrying out fast charge protocol identification and communication with charging terminal
Logic unit, the logic unit carries out fast charge protocol identification and communication, the output by communication interface and charging terminal
Applied Vbus voltage after voltage control module is linked up according to fast charge protocol logic unit and charging terminal, adjusts boosted switch
The output voltage of converter or low pressure difference linearity converter.
The electric source modes control module includes electric source modes and access tube control module, several switch ways, described
Electric source modes and access tube control module include communication module and respectively with the communication module connection several voltages compared with
Device, the output end of each voltage comparator are correspondingly connected with a biswitch access, each described biswitch access includes
The output of first switch and the second switch, the control terminal voltage comparator of the control terminal and second switch of first switch connects, the
Boost switching converter is connect by the conduction terminal of one switch with output end Vbus, and the conduction terminal of second switch becomes low pressure difference linearity
Parallel operation is equally connect with output end Vbus, and two conduction terminals switched of each switch ways is made to connect an output
Vbus is held, voltage comparator is used to compare what charging terminal and the communication module charging terminal after the communication of fast charge agreement were requested
The size of Vbus and mobile power source cell voltage Vbat, and control signal is exported according to voltage comparison result, switch is opened in control
One of switch in access.
MOS switch pipe, triode or relay can be used in first switch and second switch in each described switch ways
Device switch or any combination thereof.
It should be noted that described above is presently preferred embodiments of the present invention, the invention is not limited to above-mentioned
Embodiment all should belong to protection scope of the present invention as long as it reaches technical effect of the invention with identical means.
Claims (12)
1. a kind of fast charge power supply step-up/step-down circuit, it is characterised in that：Including several output ends Vbus, the input that is connect with battery
Hold Vbat, the boost switching converter for carrying out boosting rectifier control to cell voltage, for carrying out decompression control to cell voltage
Low pressure difference linearity converter, output voltage control module and electric source modes control module, the boost switching converter and institute
State that low pressure difference linearity controller is in parallel, the input terminal connection input terminal Vbat of the two parallel connection, the output end of the two respectively with it is each
A output end Vbus connection, the output voltage control module respectively with the boost switching converter and the low pressure difference linearity
Controller connection, the output voltage control module are used to after being linked up according to charging terminal with mobile power source fast charge agreement be applied
Vbus voltage adjustment boost switching converter or low pressure difference linearity converter output charging terminal application voltage, the electricity
Source module control module is connect with the boost switching converter and the low pressure difference linearity controller respectively, the electric source modes
Control module is used to be requested according to the voltage mode of each charging terminal, and corresponding selection opens boost switching converter and charges
Or control opens low pressure difference linearity converter and charges, and when the Vbus of charging terminal request is higher than Vbat, selection is risen
The converter that compresses switch charges；When the Vbus of charging terminal request is lower than Vbat, low pressure difference linearity converter is selected to carry out
Charging.
2. a kind of fast charge power supply step-up/step-down circuit as described in claim 1, it is characterised in that：Boost switching converter includes electricity
The first end for feeling L, boosted switch control module, the first power tube M1 and the second power tube M2, the inductance L connects input terminal
Vbat, the second end of the inductance L are separately connected drain electrode or the source electrode of the first power tube M1 and second power tube, institute
The grid of the grid and the second power tube M2 of stating the first power tube M1 is connect with the boosted switch control module respectively, institute
It states boosted switch control module also to connect with the output voltage control module, corresponding, the source electrode of the second power tube M2
Or drain electrode connects the output end Vbus, corresponding, the source electrode or grounded drain of the first power tube M1.
3. a kind of fast charge power supply step-up/step-down circuit as described in claim 1, it is characterised in that：The low pressure difference linearity converter
Including low pressure difference linearity control module and for the third power tube M3 of linear regulation effect, the low pressure difference linearity control module
Input terminal connect the output end of the output voltage control module, the output end of the low voltage difference line type control module connects institute
State the grid of third power tube M3, the drain electrode of the third power tube M3 and source electrode respectively with the input terminal Vbat and described defeated
Outlet Vbus connection.
4. a kind of fast charge power supply step-up/step-down circuit as described in claim 1, it is characterised in that：The output voltage control module
Including for charging terminal carry out the communication of fast charge agreement communication interface, the output voltage control module further include for
Charging terminal carries out the logic unit of fast charge protocol identification and communication, and the logic unit of the output voltage control module passes through logical
Believe that interface and charging terminal carry out fast charge protocol identification and communication, the output voltage control module is according to fast charge protocol logic list
Applied Vbus voltage after member is linked up with charging terminal adjusts the output of boost switching converter or low pressure difference linearity converter
Voltage.
5. a kind of fast charge power supply step-up/step-down circuit as claimed in claim 1 or 2, it is characterised in that：The electric source modes control
Module includes electric source modes and access tube control module, several switch ways, the electric source modes and access tube control module
Several voltage comparators being connect including communication module and respectively with the communication module, the output of each voltage comparator
End is correspondingly connected with a biswitch access, each described biswitch access includes first switch and the second switch, and first opens
The control terminal of pass is connected with the output of the control terminal voltage comparator of second switch, and the conduction terminal of first switch becomes boosted switch
Parallel operation is connect with output end Vbus, and the conduction terminal of second switch equally connects low pressure difference linearity converter with output end Vbus
Connect, two of each switch ways conduction terminals switched made to connect an output end Vbus, voltage comparator be used for than
Compared with charging terminal and communication module charging terminal is requested after the communication of fast charge agreement Vbus and mobile power source cell voltage
The size of Vbat, and control signal is exported according to voltage comparison result, one of switch in switch ways is opened in control.
6. a kind of fast charge power supply step-up/step-down circuit as claimed in claim 5, it is characterised in that：In each described switch ways
First switch and second switch MOS switch pipe, triode or relay switch or any combination thereof can be used.
7. a kind of fast charge power supply, it is characterised in that：Including shell, battery, mobile power source fast charge control circuit, the mobile power source
Fast charge control circuit includes several output ends Vbus, connect with battery input terminal Vbat, for being risen to cell voltage
The boost switching converter of voltage-controlled system, low pressure difference linearity converter, output voltage for carrying out decompression control to cell voltage
Control module and electric source modes control module, the boost switching converter is in parallel with the low pressure difference linearity controller, the two
Input terminal in parallel connects input terminal Vbat, and the output end of the two is connect with each output end Vbus respectively, the output electricity
Pressure control module is connect with the boost switching converter and the low pressure difference linearity controller respectively, the output voltage control
Module applied Vbus voltage adjustment boosted switch transformation after being used to be linked up according to charging terminal and mobile power source fast charge agreement
The voltage of the output charging terminal application of device or low pressure difference linearity converter, the electric source modes control module respectively with the liter
The converter that compresses switch is connected with the low pressure difference linearity controller, and the electric source modes control module is used for according to each charging eventually
The voltage mode at end is requested, and corresponding selection opens boost switching converter and charge or control unlatching low pressure difference linearity transformation
Device charges, and when the Vbus of charging terminal request is higher than Vbat, boost switching converter is selected to charge；Work as charging
When the Vbus of terminal request is lower than Vbat, low pressure difference linearity converter is selected to charge.
8. a kind of fast charge power supply as claimed in claim 7, it is characterised in that：Boost switching converter includes inductance L, boosts and open
The first end for closing control module, the first power tube M1 and the second power tube M2, the inductance L connects input terminal Vbat, the electricity
The second end of sense L is separately connected drain electrode or the source electrode of the first power tube M1 and second power tube, first power
The grid of the grid of pipe M1 and the second power tube M2 are connect with the boosted switch control module respectively, the boosted switch
Control module is also connect with the output voltage control module, corresponding, the source electrode of the second power tube M2 or drain electrode connection
The output end Vbus, corresponding, the source electrode or grounded drain of the first power tube M1.
9. a kind of fast charge power supply as claimed in claim 7, it is characterised in that：The low pressure difference linearity controller includes low voltage difference
The input terminal of line type control module and the third power tube M3 acted on for Serial regulation, the low voltage difference line type control module connect
The output end of the output voltage control module is connect, the output end of the low voltage difference line type control module connects the third power
The grid of pipe M3, the drain electrode of the third power tube M3 and source electrode are controlled with the input terminal Vbat and the electric source modes respectively
Circuit connection.
10. a kind of fast charge power supply as claimed in claim 7, it is characterised in that：The output voltage control module includes setting
The communication interface for being used to carry out the communication of fast charge agreement with charging terminal on the housing, the output voltage control module is also
Including for charging terminal carry out fast charge protocol identification and communication logic unit, the logic unit by communication interface with
Charging terminal carries out fast charge protocol identification and communication, and the output voltage control module is according to fast charge protocol logic unit and charging
Applied Vbus voltage after terminal is linked up adjusts the output voltage of boost switching converter or low pressure difference linearity converter.
11. a kind of fast charge power supply as claimed in claim 7, it is characterised in that：The electric source modes control module includes power supply
Mode and access tube control module, several switch ways, the electric source modes and access tube control module include communication module
And several voltage comparators connecting respectively with the communication module, the output end of each voltage comparator are correspondingly connected with one
A biswitch access, each described biswitch access include first switch and the second switch, the control terminal of first switch and
The output of the control terminal voltage comparator of second switch connects, and the conduction terminal of first switch is by boost switching converter and output end
Low pressure difference linearity converter is equally connect with output end Vbus by the conduction terminal of Vbus connection, second switch, makes each institute
The conduction terminal for stating two switches of switch ways connects an output end Vbus, and voltage comparator is for comparing charging terminal and leading to
The size of letter module charging terminal is requested after the communication of fast charge agreement Vbus and mobile power source cell voltage Vbat, and according to
One of switch in switch ways is opened in voltage comparison result output control signal, control.
12. a kind of fast charge power supply as claimed in claim 11, it is characterised in that：First in each described switch ways opens
It closes and MOS switch pipe, triode or relay switch or any combination thereof can be used in second switch.
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| CN201810582531.4A CN108923649A (en) | 2018-06-07 | 2018-06-07 | A kind of fast charge power supply step-up/step-down circuit and fast charge power supply |
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| CN201810582531.4A CN108923649A (en) | 2018-06-07 | 2018-06-07 | A kind of fast charge power supply step-up/step-down circuit and fast charge power supply |
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| CN108923649A true CN108923649A (en) | 2018-11-30 |
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| CN201810582531.4A Pending CN108923649A (en) | 2018-06-07 | 2018-06-07 | A kind of fast charge power supply step-up/step-down circuit and fast charge power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212600A (en) * | 2019-05-23 | 2019-09-06 | 欣旺达电子股份有限公司 | The mobile power source of multipath charging |
| CN111917152A (en) * | 2020-07-07 | 2020-11-10 | 珠海智融科技有限公司 | Method for improving power efficiency, terminal, storage medium and charging device |
| CN112165140A (en) * | 2020-10-14 | 2021-01-01 | 维沃移动通信有限公司 | Charging and discharging control method and device and power supply equipment |
| CN112821518A (en) * | 2021-02-24 | 2021-05-18 | 陈锐涛 | Wide-voltage power supply intelligent charging circuit and battery charger thereof |
| CN114039485A (en) * | 2022-01-11 | 2022-02-11 | 钰泰半导体股份有限公司 | Voltage regulation and control circuit and electronic device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070218324A1 (en) * | 2006-03-14 | 2007-09-20 | Chun-Chin Tung | Fuel cell voltage stabilization apparatus |
| CN101252313A (en) * | 2007-12-17 | 2008-08-27 | 福建师范大学 | Self-adapting power supply voltage converter |
| CN102184807A (en) * | 2011-04-11 | 2011-09-14 | 李锦恭 | Ultralow-power-consumption and high-efficiency electromagnet control circuit |
| CN102882239A (en) * | 2011-07-14 | 2013-01-16 | 凹凸电子（武汉）有限公司 | Battery charging apparatus with a common control loop for a low drop-out voltage regulator and a boost regulator |
| CN205490148U (en) * | 2015-04-03 | 2016-08-17 | 半导体元件工业有限责任公司 | Multi -mode source transformation ware |
| CN107171417A (en) * | 2017-07-26 | 2017-09-15 | 深圳英集芯科技有限公司 | A kind of portable power source fills control circuit and fast charging type portable power source soon |
| CN107482707A (en) * | 2017-07-27 | 2017-12-15 | 太仓华淏信息科技有限公司 | A kind of Portable micro-consumption data collecting system power module |
| CN208353217U (en) * | 2018-06-07 | 2019-01-08 | 珠海智融科技有限公司 | A kind of fast charge power supply step-up/step-down circuit and fast charge power supply |
-
2018
- 2018-06-07 CN CN201810582531.4A patent/CN108923649A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070218324A1 (en) * | 2006-03-14 | 2007-09-20 | Chun-Chin Tung | Fuel cell voltage stabilization apparatus |
| CN101252313A (en) * | 2007-12-17 | 2008-08-27 | 福建师范大学 | Self-adapting power supply voltage converter |
| CN102184807A (en) * | 2011-04-11 | 2011-09-14 | 李锦恭 | Ultralow-power-consumption and high-efficiency electromagnet control circuit |
| CN102882239A (en) * | 2011-07-14 | 2013-01-16 | 凹凸电子（武汉）有限公司 | Battery charging apparatus with a common control loop for a low drop-out voltage regulator and a boost regulator |
| CN205490148U (en) * | 2015-04-03 | 2016-08-17 | 半导体元件工业有限责任公司 | Multi -mode source transformation ware |
| CN107171417A (en) * | 2017-07-26 | 2017-09-15 | 深圳英集芯科技有限公司 | A kind of portable power source fills control circuit and fast charging type portable power source soon |
| CN107482707A (en) * | 2017-07-27 | 2017-12-15 | 太仓华淏信息科技有限公司 | A kind of Portable micro-consumption data collecting system power module |
| CN208353217U (en) * | 2018-06-07 | 2019-01-08 | 珠海智融科技有限公司 | A kind of fast charge power supply step-up/step-down circuit and fast charge power supply |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212600A (en) * | 2019-05-23 | 2019-09-06 | 欣旺达电子股份有限公司 | The mobile power source of multipath charging |
| CN111917152A (en) * | 2020-07-07 | 2020-11-10 | 珠海智融科技有限公司 | Method for improving power efficiency, terminal, storage medium and charging device |
| CN111917152B (en) * | 2020-07-07 | 2021-03-23 | 珠海智融科技有限公司 | Method for improving power efficiency, terminal, storage medium and charging device |
| CN112165140A (en) * | 2020-10-14 | 2021-01-01 | 维沃移动通信有限公司 | Charging and discharging control method and device and power supply equipment |
| CN112165140B (en) * | 2020-10-14 | 2022-06-07 | 维沃移动通信有限公司 | Charging and discharging control method and device and power supply equipment |
| CN112821518A (en) * | 2021-02-24 | 2021-05-18 | 陈锐涛 | Wide-voltage power supply intelligent charging circuit and battery charger thereof |
| CN114039485A (en) * | 2022-01-11 | 2022-02-11 | 钰泰半导体股份有限公司 | Voltage regulation and control circuit and electronic device |
| CN114039485B (en) * | 2022-01-11 | 2022-03-15 | 钰泰半导体股份有限公司 | Voltage regulation and control circuit and electronic device |
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