CN206364710U - Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance - Google Patents
Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance Download PDFInfo
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- CN206364710U CN206364710U CN201720012186.1U CN201720012186U CN206364710U CN 206364710 U CN206364710 U CN 206364710U CN 201720012186 U CN201720012186 U CN 201720012186U CN 206364710 U CN206364710 U CN 206364710U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a kind of intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance, it includes：Input block；Filter unit；PFC boost unit；LLC isolated converter units, include first switch pipe, second switch pipe, transformer, first diode, second diode and filter inductance, the source electrode of first switch pipe is connected to the first end of primary winding, second end of primary winding by the first resonant capacitance with being connected to front end, the drain electrode of second switch pipe is connected to the first end of primary winding, the first end of transformer secondary output winding is connected to the negative electrode of the first diode, second end of transformer secondary output winding is connected to the anode of the second diode, the negative electrode of second diode is connected to the front end of filter inductance；Inversion reversed phase unit.The utility model can improve PF values and output voltage quality.
Description
Technical field
The utility model is related to voltage conversion circuit, more particularly to a kind of intelligent half-bridge amendment based on PFC Yu LLC resonance
Wave voltage change-over circuit.
Background technology
In the prior art, it is otherwise known as travelling insert row by the AC intelligent boost-buck conversion equipments for turning AC, in the device, voltage
Change-over circuit is its Key Circuit, be it is a kind of can realize AC-AC conversion circuit, can AC-AC conversion in realize buck
And the function of burning voltage and frequency.But just most of meaningful formula equipment Market is electric for the topology of non-isolation type by current AC-AC
Road, and PF values are low, output voltage quality is low, security reliability is poor.
Utility model content
The technical problems to be solved in the utility model is, can improve voltage there is provided one kind in view of the shortcomings of the prior art
The PF values of conversion equipment, output voltage quality can be improved, and the safe and reliable intelligent half-bridge based on PFC and LLC resonance is repaiied
Positive wave voltage conversion circuit.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that.
A kind of intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance, it includes：One input block,
For providing DC voltage；One filter unit, is connected to the output end of input block, enters for the output voltage to input block
Row filtering；One PFC boost unit, is connected to the output end of filter unit, is boosted for the output voltage to filter unit
Conversion；One LLC isolated converter units, include first switch pipe, second switch pipe, transformer, the first diode, the two or two
Pole pipe and filter inductance, the drain electrode of the first switch pipe are connected to the output end of PFC boost unit, the first switch pipe
Source electrode is connected to the first end of primary winding, and the second end of the primary winding is connected by the first resonant capacitance
With being connected to front end, the drain electrode of the second switch pipe is connected to the first end of primary winding, the second switch pipe
By 3rd resistor with being connected to front end, the grid of the first switch pipe and the grid of second switch pipe are used to load two source electrode
The pwm pulse signal of road opposite in phase, to make the first switch pipe and second switch pipe alternate conduction, the transformer secondary output
With being connected to rear end, the first end of the transformer secondary output winding is connected to the negative electrode of the first diode to the centre tap of winding,
The anode of first diode is by the second capacitance connection in rear end, and the second end of the transformer secondary output winding is connected to
The anode of second diode, the negative electrode of second diode is connected to the front end of filter inductance, the rear end of the filter inductance
By the 3rd capacitance connection in rear end, the anode of the rear end of the filter inductance and the first diode is used as LLC isolated variables
The output end of device unit；One inversion reversed phase unit, is connected to the output end of LLC isolated converter units, the inversion paraphase list
Member is used to export alternating current after carrying out inversion conversion to the output voltage of LLC isolated converter units.
Preferably, the input block includes socket, insurance, lightning protection resistance, common mode inhibition inductance, safety electric capacity and whole
Bridge is flowed, the insurance is serially connected with the zero line of socket or live wire, the front end of the common mode inhibition inductance is parallel to socket, described anti-
Thunder and lightning hinders the front end for being parallel to common mode inhibition inductance, and the input of the safety electric capacity and rectifier bridge is parallel to common mode inhibition electricity
The rear end of sense.
Preferably, the filter unit includes filter capacitor, and the filter capacitor is parallel to the output end of rectifier bridge.
Preferably, the PFC boost unit includes boost inductance, the 3rd switching tube, the first commutation diode and second
Electrochemical capacitor, the front end of the boost inductance is connected to the output end of input block, and the rear end of the boost inductance is connected to
The drain electrode of three switching tubes, with connecing front end, the grid of the 3rd switching tube is used to access all the way the source electrode of the 3rd switching tube
Pwm control signal, the anode of drain electrode the first commutation diode of connection of the 3rd switching tube, first commutation diode
Negative electrode is as the output end of PFC boost unit, and the negative electrode of first commutation diode connects the positive pole of the second electrochemical capacitor, the
The negative pole of two electrochemical capacitors is with connecing front end.
Preferably, also include a MCU control unit, the grid of the first switch pipe, the grid of second switch pipe and
The grid of 3rd switching tube is connected to MCU control unit, and the MCU control unit is used to distinguishing output pwm signal to the
One switching tube, second switch pipe and the 3rd switching tube, to control first switch pipe, second switch pipe and the 3rd switching tube break-make shape
State.
Preferably, an AC sampling unit is also included, the AC sampling unit is connected to the input of input block
Between MCU control unit, the AC sampling unit is used to gather the voltage of input block AC and feeds back to MCU controls
Unit.
Preferably, the first sampling resistor is connected between the source electrode and front end ground of the 3rd switching tube, the described 3rd opens
The source electrode for closing pipe is connected to MCU control unit, makes MCU control unit gather the 3rd switching tube by first sampling resistor
The electric signal of source electrode.
Preferably, the second end of the primary winding is connected to MCU control unit, to make MCU control unit adopt
Collect the electric signal of primary winding.
Preferably, a D/C voltage sampling unit is also included, the D/C voltage sampling unit includes be sequentially connected in series
Two sampling resistors and the 3rd sampling resistor, the front end of second sampling resistor are connected to the output of LLC isolated converter units
End, the rear end of the 3rd sampling resistor is connected to MCU control unit, by second sampling resistor and the 3rd sampling resistor
And make MCU control unit gather the electric signal that LLC isolated converters unit is exported.
Preferably, the inversion reversed phase unit includes the 4th switching tube, the 5th switching tube, the 3rd electrochemical capacitor and the 4th
Electrochemical capacitor, the drain electrode of the 4th switching tube is connected to the output head anode of LLC isolated converter units, the 4th switch
The source electrode of pipe is connected to the drain electrode of the 5th switching tube, and the source electrode of the 5th switching tube is connected to LLC isolated converter units
Negative pole of output end, the grid of the 4th switching tube and the grid of the 5th switching tube are respectively used to access two-way opposite in phase
Pwm pulse signal, the positive pole of the 3rd electrochemical capacitor is connected to the drain electrode of the 4th switching tube, the 3rd electrochemical capacitor it is negative
Pole connection rear end, the negative pole of the 3rd electrochemical capacitor is also attached to the positive pole of the 4th electrochemical capacitor, the 4th electrolysis electricity
The negative pole of appearance is connected to the source electrode of the 5th switching tube, and the source electrode of the 4th switching tube and the negative pole of the 3rd electrochemical capacitor are as inverse
Become the output end of reversed phase unit.
In the disclosed intelligent half-bridge amendment wave voltage change-over circuit based on PFC and LLC resonance of the utility model, input is single
After unit filtering, boost conversion is carried out by PFC boost unit after filtering for the DC voltage that member is provided, transmit afterwards to LLC every
From power converter cells, in LLC isolated converter units, first switch pipe, second switch pipe, the first resonant capacitance, transformer
Primary leakage inductance and primary magnetizing inductance composition LLC resonance circuits, so that the secondary coil by power transmission to transformer, passes through
First diode, the second diode rectification then pass through filter inductance, the second electric capacity, the 3rd into the ripple level of two opposite directions
Electric capacity and be filtered into the DC voltage for including positive negative direction, and by changing the turn ratio of transformer primary and secondary, can adjust defeated
Go out the height of voltage, and then realize boosting or decompression conversion.Based on said structure, the utility model not only realizes voltage
Isolation transmission, and then the PF values of step-up/down conversion equipment are improved, also improve output voltage quality so that voltage conversion mistake
Cheng Gengjia is safe and reliable.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model full-bridge amendment wave voltage change-over circuit.
Fig. 2 is the circuit theory diagrams of AC sampling unit in the utility model preferred embodiment.
Fig. 3 is the circuit theory diagrams of MCU control unit in the utility model preferred embodiment.
Embodiment
The utility model is described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a kind of intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance, with reference to
Shown in Fig. 1 to Fig. 3, it includes：
One input block 10, for providing DC voltage；
One filter unit 20, is connected to the output end of input block 10, for the output voltage progress to input block 10
Filtering；
One PFC boost unit 30, is connected to the output end of filter unit 20, enters for the output voltage to filter unit 20
Row boost conversion；
One LLC isolated converters unit 40, includes first switch pipe Q6, second switch pipe Q7, transformer T1, the one or two
Pole pipe D5, the second diode D6 and filter inductance L3, the drain electrode of the first switch pipe Q6 are connected to the defeated of PFC boost unit 30
Go out end, the source electrode of the first switch pipe Q6 is connected to the first end of transformer T1 armature windings, the transformer T1 it is primary around
By the first resonant capacitance C4 with being connected to front end, the drain electrode of the second switch pipe Q7 is connected to transformer T1 at second end of group
The first end of armature winding, by 3rd resistor R2B with being connected to front end, described first opens the source electrode of the second switch pipe Q7
The grid of the grid and second switch pipe Q7 that close pipe Q6 is used for the pwm pulse signal for loading two-way opposite in phase, to make described the
One switching tube Q6 and second switch pipe Q7 alternate conductions, the centre tap of the transformer T1 secondary windings with being connected to rear end,
The first end of the transformer T1 secondary windings is connected to the first diode D5 negative electrode, and the anode of the first diode D5 leads to
Cross the second electric capacity C7 with being connected to rear end, the second end of the transformer T1 secondary windings is connected to the second diode D6 sun
Pole, the negative electrode of the second diode D6 is connected to filter inductance L3 front end, and the rear end of the filter inductance L3 passes through the 3rd
With being connected to rear end, the rear end of the filter inductance L3 and the first diode D5 anode are used as LLC isolated converters to electric capacity C8
The output end of unit 40；
One inversion reversed phase unit 60, is connected to the output end of LLC isolated converters unit 40, the inversion reversed phase unit 60
Alternating current is exported after carrying out inversion conversion for the output voltage to LLC isolated converters unit 40.
In above-mentioned amendment wave voltage change-over circuit, unit 20 is filtered the DC voltage that input block 10 is provided after filtering
Afterwards, boost conversion is carried out by PFC boost unit 30, transmitted afterwards to LLC isolated converters unit 40, in LLC isolated converters
In unit 40, first switch pipe Q6, second switch pipe Q7, the first resonant capacitance C4, transformer T1 primary leakage inductance and primary is encouraged
Magnetoelectricity sense constitutes LLC resonance circuits, so that the secondary coil by power transmission to transformer T1, passes through the first diode D5, the
Two diode D6 are rectified into the ripple level of two opposite directions, then by filter inductance L3, the second electric capacity C7, the 3rd electric capacity C8 and
The DC voltage for including positive negative direction is filtered into, and by changing the turn ratio of transformer T1 primary and secondaries, output electricity can be adjusted
The height of pressure, and then realize boosting or decompression conversion.Based on said structure, the utility model not only realizes the isolation of voltage
Transmission, and then the PF values of step-up/down conversion equipment are improved, also improve output voltage quality so that voltage conversion process is more
Plus it is safe and reliable.
On importation, the input block 10 includes socket, insurance F2, lightning protection resistance RV1, common mode inhibition inductance
L1, safety electric capacity CX1 and rectifier bridge DB1, the insurance F2 are serially connected with the zero line of socket or live wire, the common mode inhibition inductance
L1 front end is parallel to socket, and the lightning protection resistance RV1 is parallel to common mode inhibition inductance L1 front end, the safety electric capacity CX1
Common mode inhibition inductance L1 rear end is parallel to rectifier bridge DB1 input.
In order to be filtered to input voltage, the filter unit 20 includes filter capacitor C1, the filter capacitor C1
It is parallel to rectifier bridge DB1 output end.
On boosting part, the PFC boost unit 30 includes boost inductance L2, the 3rd switching tube Q5, the first rectification
Diode D1 and the second electrochemical capacitor C2, the boost inductance L2 front end are connected to the output end of input block 10, the liter
Voltage inductance L2 rear end is connected to the 3rd switching tube Q5 drain electrode, the source electrode of the 3rd switching tube Q5 with connecing front end, described
Three switching tube Q5 grid is used to access pwm control signal all the way, and the drain electrode of the 3rd switching tube Q5 connects the first rectification two
Pole pipe D1 anode, the negative electrode of the first commutation diode D1 is used as the output end of PFC boost unit 30, and first rectification
Diode D1 negative electrode connects the second electrochemical capacitor C2 positive pole, and the second electrochemical capacitor C2 negative pole is with connecing front end.
In above-mentioned PFC boost unit 30, if filter capacitor C1 exports half-wave alternating voltage, PFC enters boost mode, to carry
High AC turns the PF values that AC is intelligently depressured conversion topologies circuit, is by the second filtered voltages of electrochemical capacitor C2 after boosting
400V, specific boosting principle is as follows：When 3rd switching tube Q5 is turned on, the boosted inductance L2 of electric current on filter capacitor C1, the
Three switching tube Q5 to GND formation loop, boost inductance L2 storage energy；When the 3rd switching tube Q5 is turned off, meeting on boost inductance
The induced electromotive force more much higher than input voltage is formed, induced electromotive force forms unidirectional pulse electricity after carrying out rectification through continued flow tube D1
Pressure gives the second electrochemical capacitor C2 electric capacity and enters filtering again, is filtered into 400V DC voltage.And the 3rd switching tube Q5 is basis
Input AC amendment ripple that control chip is adopted changes to increase or reduce the 3rd switching tube Q5 ON time so that electric current with
Voltage-phase becomes unanimously to improve PF values.
As a kind of preferred embodiment, as shown in figure 3, the present embodiment also includes a MCU control unit 80, described first opens
Grid, second switch pipe Q7 grid and the 3rd switching tube Q5 grid for closing pipe Q6 are connected to MCU control unit 80, institute
Stating MCU control unit 80 is used to distinguish output pwm signal to first switch pipe Q6, second switch pipe Q7 and the 3rd switching tube Q5,
To control first switch pipe Q6, second switch pipe Q7 and the 3rd switching tube Q5 on off operating modes.
For the ease of monitoring the electric signal of AC, Fig. 2 is refer to, also includes an AC sampling unit 70, it is described to hand over
Stream sampling unit 70 is connected between the input of input block 10 and MCU control unit 80, and the AC sampling unit 70 is used
In collection the AC of input block 10 voltage and feed back to MCU control unit 80.
Further, the AC sampling unit 70 includes amplifier U9B, the amplifier U9B two inputs difference
The input of input block 10 is connected to by current-limiting resistance, the output end of the amplifier U9B is connected to MCU control unit
80。
For the ease of being gathered in real time to electric current, is connected between the source electrode and front end ground of the 3rd switching tube Q5
One sampling resistor R2A, the source electrode of the 3rd switching tube Q5 is connected to MCU control unit 80, by first sampling resistor
R2A and make MCU control unit 80 gather the 3rd switching tube Q5 source electrodes electric signal.
On this basis, the second end of the transformer T1 armature windings is connected to MCU control unit 80, to make MCU control
Unit 80 processed gathers the electric signal of transformer T1 armature windings.
As a kind of preferred embodiment, in order to be acquired to DC side electric signal, the present embodiment also includes a D/C voltage
Sampling unit 50, the D/C voltage sampling unit 50 includes the second sampling resistor R13 and the 3rd sampling resistor being sequentially connected in series
R15, the second sampling resistor R13 front end are connected to the output end of LLC isolated converters unit 40, the 3rd sampling electricity
Resistance R15 rear end is connected to MCU control unit 80, is made by the second sampling resistor R13 and the 3rd sampling resistor R15
The electric signal of the output of the collection LLC isolated converters of MCU control unit 80 unit 40.
On Converting Unit, Fig. 1 is refer to, the inversion reversed phase unit 60 includes the 4th switching tube Q2, the 5th switch
Pipe Q4, the 3rd electrochemical capacitor C3 and the 4th electrochemical capacitor C5, the drain electrode of the 4th switching tube Q2 are connected to LLC isolated converters
The output head anode of unit 40, the source electrode of the 4th switching tube Q2 is connected to the 5th switching tube Q4 drain electrode, and the described 5th opens
The source electrode for closing pipe Q4 is connected to the negative pole of output end of LLC isolated converters unit 40, the grid of the 4th switching tube Q2 and the
Five switching tube Q4 grid is respectively used to access the pwm pulse signal of two-way opposite in phase, and the 3rd electrochemical capacitor C3 is just
Pole is connected to the 4th switching tube Q2 drain electrode, and with connecting rear end, the 3rd electrolysis is electric for the negative pole of the 3rd electrochemical capacitor C3
The negative pole for holding C3 is also attached to the 4th electrochemical capacitor C5 positive pole, and the negative pole of the 4th electrochemical capacitor C5 is connected to the 5th switch
Pipe Q4 source electrode, the source electrode of the 4th switching tube Q2 and the 3rd electrochemical capacitor C3 negative pole are used as the defeated of inversion reversed phase unit 60
Go out end.
Further, first resistor R17 is connected between the grid and source electrode of the 4th switching tube Q2, the described 5th opens
Second resistance R23 is connected between the grid and source electrode that close pipe Q4.
In above-mentioned inversion reversed phase unit 60, inductance L3 filter inductances filter into DC voltage through the 4th switching tube after filtering
Q2, load, first half period amendment ripple level of the 4th electrochemical capacitor C4 formation loop powering loads formation；Second half cycle
Phase corrects ripple level by the 5th switching tube Q4, load, the 3rd electrochemical capacitor C3 formation loop, is so formed in load
One complete power frequency amendment alternating current wave pressure.Control chip output pwm signal sent out respectively after drive circuit PWM2H,
PWM2L gives the 4th switching tube Q2, the 5th switching tube Q4 GATE poles.Phase in inversion phase inverter is with frequency according to control core
The pattern of piece inner setting is operated.The 3rd electrochemical capacitor C3, the 4th electrochemical capacitor C4 also have the effect of filtering simultaneously, can be with
Filter circuit is constituted with filter inductance L3.The control of this inverter circuit is simple, and circuit is with low cost only with two metal-oxide-semiconductors.
Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance disclosed in the utility model, it has height
PF values, can be achieved power network and isolate with output end, and security is very high.It is able to can be automatically adjusted in input full voltage range defeated
Go out voltage, output frequency can be fixed, and output voltage is exported with correcting ripple, and automatic shaping function is pressed with to alternating current, this
Outside, the utility model circuit is simple, easy to control, and containing voltage and current sampling circuit, can anti-surge voltage and electric current.
Simply the utility model preferred embodiment described above, is not limited to the utility model, all in this practicality
Modification, equivalent substitution or improvement made in new technical scope etc., should be included in the model that the utility model is protected
In enclosing.
Claims (10)
1. a kind of intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance, it is characterised in that include：
One input block, for providing DC voltage；
One filter unit, is connected to the output end of input block, is filtered for the output voltage to input block；
One PFC boost unit, is connected to the output end of filter unit, and carrying out boosting for the output voltage to filter unit turns
Change；
One LLC isolated converter units, include first switch pipe, second switch pipe, transformer, the first diode, the two or two
Pole pipe and filter inductance, the drain electrode of the first switch pipe are connected to the output end of PFC boost unit, the first switch pipe
Source electrode is connected to the first end of primary winding, and the second end of the primary winding is connected by the first resonant capacitance
With being connected to front end, the drain electrode of the second switch pipe is connected to the first end of primary winding, the second switch pipe
By 3rd resistor with being connected to front end, the grid of the first switch pipe and the grid of second switch pipe are used to load two source electrode
The pwm pulse signal of road opposite in phase, to make the first switch pipe and second switch pipe alternate conduction, the transformer secondary output
With being connected to rear end, the first end of the transformer secondary output winding is connected to the negative electrode of the first diode to the centre tap of winding,
The anode of first diode is by the second capacitance connection in rear end, and the second end of the transformer secondary output winding is connected to
The anode of second diode, the negative electrode of second diode is connected to the front end of filter inductance, the rear end of the filter inductance
By the 3rd capacitance connection in rear end, the anode of the rear end of the filter inductance and the first diode is used as LLC isolated variables
The output end of device unit；
One inversion reversed phase unit, is connected to the output end of LLC isolated converter units, and the inversion reversed phase unit is used for LLC
The output voltage of isolated converter unit exports alternating current after carrying out inversion conversion.
2. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 1 based on PFC Yu LLC resonance, its feature exists
In the input block includes socket, insurance, lightning protection resistance, common mode inhibition inductance, safety electric capacity and rectifier bridge, the guarantor
Danger is serially connected with the zero line of socket or live wire, and the front end of the common mode inhibition inductance is parallel to socket, the lightning protection resistor coupled in parallel
In the front end of common mode inhibition inductance, the input of the safety electric capacity and rectifier bridge is parallel to the rear end of common mode inhibition inductance.
3. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 2 based on PFC Yu LLC resonance, its feature exists
In the filter unit includes filter capacitor, and the filter capacitor is parallel to the output end of rectifier bridge.
4. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 1 based on PFC Yu LLC resonance, its feature exists
In the PFC boost unit includes boost inductance, the 3rd switching tube, the first commutation diode and the second electrochemical capacitor, described
The front end of boost inductance is connected to the output end of input block, and the rear end of the boost inductance is connected to the leakage of the 3rd switching tube
Pole, with connecing front end, the grid of the 3rd switching tube is used to access pwm control signal all the way the source electrode of the 3rd switching tube,
The anode of drain electrode the first commutation diode of connection of 3rd switching tube, the negative electrode of first commutation diode is used as PFC
The output end of boosting unit, and the positive pole of negative electrode the second electrochemical capacitor of connection of first commutation diode, the second electrochemical capacitor
Negative pole with connecing front end.
5. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 4 based on PFC Yu LLC resonance, its feature exists
In also including a MCU control unit, the grid of the first switch pipe, the grid of second switch pipe and the 3rd switching tube
Grid is connected to MCU control unit, and the MCU control unit is used to distinguish output pwm signal to first switch pipe, second
Switching tube and the 3rd switching tube, to control first switch pipe, second switch pipe and the 3rd switching tube on off operating mode.
6. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 5 based on PFC Yu LLC resonance, its feature exists
In also including an AC sampling unit, the AC sampling unit is connected to the input and MCU control unit of input block
Between, the AC sampling unit is used to gather the voltage of input block AC and feeds back to MCU control unit.
7. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 5 based on PFC Yu LLC resonance, its feature exists
In being connected with the first sampling resistor between the source electrode and front end ground of the 3rd switching tube, the source electrode of the 3rd switching tube connects
MCU control unit is connected to, makes MCU control unit gather the telecommunications of the 3rd switching tube source electrode by first sampling resistor
Number.
8. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 5 based on PFC Yu LLC resonance, its feature exists
In the second end of the primary winding is connected to MCU control unit, to make MCU control unit gather primary
The electric signal of winding.
9. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 5 based on PFC Yu LLC resonance, its feature exists
In, also include a D/C voltage sampling unit, the D/C voltage sampling unit include the second sampling resistor for being sequentially connected in series and
3rd sampling resistor, the front end of second sampling resistor is connected to the output end of LLC isolated converter units, and the described 3rd adopts
The rear end of sample resistance is connected to MCU control unit, makes MCU controls single by second sampling resistor and the 3rd sampling resistor
The electric signal of member collection LLC isolated converters unit output.
10. the intelligent half-bridge amendment wave voltage change-over circuit as claimed in claim 5 based on PFC Yu LLC resonance, its feature exists
In the inversion reversed phase unit includes the 4th switching tube, the 5th switching tube, the 3rd electrochemical capacitor and the 4th electrochemical capacitor, institute
The drain electrode for stating the 4th switching tube is connected to the output head anode of LLC isolated converter units, and the source electrode of the 4th switching tube connects
The drain electrode of the 5th switching tube is connected to, the source electrode of the 5th switching tube is connected to the negative pole of output end of LLC isolated converter units,
The grid of 4th switching tube and the grid of the 5th switching tube are respectively used to access the pwm pulse signal of two-way opposite in phase,
The positive pole of 3rd electrochemical capacitor is connected to the drain electrode of the 4th switching tube, the negative pole connection rear end of the 3rd electrochemical capacitor
Ground, the negative pole of the 3rd electrochemical capacitor is also attached to the positive pole of the 4th electrochemical capacitor, and the negative pole of the 4th electrochemical capacitor connects
The source electrode of the 5th switching tube is connected to, the source electrode of the 4th switching tube and the negative pole of the 3rd electrochemical capacitor are used as inversion reversed phase unit
Output end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720012186.1U CN206364710U (en) | 2017-01-04 | 2017-01-04 | Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance |
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| CN201720012186.1U CN206364710U (en) | 2017-01-04 | 2017-01-04 | Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787780A (en) * | 2017-01-04 | 2017-05-31 | 广东百事泰电子商务股份有限公司 | Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance |
| WO2018126557A1 (en) * | 2017-01-04 | 2018-07-12 | 广东百事泰电子商务股份有限公司 | Pfc and llc resonance-based smart half bridge sine wave voltage conversion circuit |
| CN111917290A (en) * | 2019-05-07 | 2020-11-10 | 东芝泰格有限公司 | Power conversion device and image forming apparatus |
-
2017
- 2017-01-04 CN CN201720012186.1U patent/CN206364710U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787780A (en) * | 2017-01-04 | 2017-05-31 | 广东百事泰电子商务股份有限公司 | Intelligent half-bridge amendment wave voltage change-over circuit based on PFC Yu LLC resonance |
| WO2018126556A1 (en) * | 2017-01-04 | 2018-07-12 | 广东百事泰电子商务股份有限公司 | Intelligent half-bridge correction wave voltage conversion circuit based on pfc and llc resonances |
| WO2018126557A1 (en) * | 2017-01-04 | 2018-07-12 | 广东百事泰电子商务股份有限公司 | Pfc and llc resonance-based smart half bridge sine wave voltage conversion circuit |
| CN111917290A (en) * | 2019-05-07 | 2020-11-10 | 东芝泰格有限公司 | Power conversion device and image forming apparatus |
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