CN109980934A - The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance - Google Patents
The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance Download PDFInfo
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- 239000003990 capacitor Substances 0.000 claims description 20
- 230000006837 decompression Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
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Classifications
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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
- H02M3/1584—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 with a plurality of power processing stages connected in parallel
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance, belongs to power electronics field, and it is big to solve existing non-isolation type bidirectional DC/DC converter switch stress, the low problem of system effectiveness.The DC/DC converter includes the first filter unit, buck unit and the second filter unit.Input, the output filtering of first filter unit and the second filter unit for buck unit.Buck unit includes coupling inductance L1, coupling inductance L2, resonant capacitance Cr, switching tube S1, switching tube S2With switching tube S3, switching tube S1, switching tube S2With switching tube S3Have body diode.Coupling inductance L1, coupling inductance L2, switching tube S1With switching tube S3Constitute coupling inductance formula boost circuit.Resonant capacitance CrLC series resonance unit, LC series resonance unit, switching tube S are constituted with the leakage inductance of two coupling inductances2With switching tube S3Constitute half-bridge converter topological structure.
Description
Technical field
The present invention relates to a kind of DC/DC converters, belong to power electronics field.
Background technique
In recent years, with the development in the fields such as photovoltaic power generation, direct-current grid and new-energy automobile, relevant energy transmission
Technology has obtained extensive concern.Wherein, powerful of the two-way DC/DC converter as energy two-way transmission, has become
Field of energy transfer research emphasis at this stage and hot spot.At the same time, with existing the relevant technologies to Switching Power Supply lightweight,
Miniaturization, the requirement of high power density are higher and higher, and Switching Power Supply also gradually develops towards high frequency.Therefore, have efficient
The two-way DC/DC converter of the high frequency of rate has important theory significance and real value.However, existing two-way DC/DC transformation
Device is primarily present following problems:
Existing two-way DC/DC converter is broadly divided into isolated and two kinds non-isolated, wherein isolated is two-way
The problem that the generally existing number of devices of DC/DC converter is more, switch tube voltage stress is big and control is complicated.And non-isolated pair
Cause the voltage transmission of itself than low because switching tube is usually operated under hard switching state to DC/DC converter, system effectiveness
It is low.At the same time, since existing two-way DC/DC converter requires high frequency, high efficiency and high power density, when opening for switching device
It closes after frequency improves to a certain extent, there are switching losses to dramatically increase for two-way DC/DC converter under hard switching working condition,
The problem that switch stress is big, electromagnetic radiation is big and noise is big.
Summary of the invention
The present invention be solve existing non-isolation type bidirectional DC/DC converter switch stress it is big, the low problem of system effectiveness,
Propose a kind of two-way DC/DC converter of the high no-load voltage ratio of the high frequency based on coupling inductance.
The two-way DC/DC converter of the high no-load voltage ratio of high frequency of the present invention based on coupling inductance include the first filter unit,
Buck unit and the second filter unit；
When the DC/DC converter works in boost mode, the first filter unit is for the input to buck unit
D. c. voltage signal is filtered, and the second filter unit is for being filtered the output d. c. voltage signal of buck unit；
When the DC/DC converter works in decompression mode, the second filter unit is for the input to buck unit
D. c. voltage signal is filtered, and the first filter unit is for being filtered the output d. c. voltage signal of buck unit；
Buck unit includes coupling inductance L1, coupling inductance L2, resonant capacitance Cr, switching tube S1, switching tube S2And switch
Pipe S3, switching tube S1, switching tube S2With switching tube S3Have body diode；
Coupling inductance L1, coupling inductance L2, switching tube S1With switching tube S3Constitute coupling inductance formula boost circuit；
Resonant capacitance CrLC series resonance unit, LC series resonance unit, switch are constituted with the leakage inductance of two coupling inductances
Pipe S2With switching tube S3Constitute half-bridge converter topological structure.
As preferably, the first filter unit and the second filter unit are respectively capacitor C1With capacitor C2。
As preferably, capacitor C1First end and coupling inductance L1First end be connected, coupling inductance L1Second end
Simultaneously with coupling inductance L2First end and switching tube S1Electric current flow into end be connected, coupling inductance L2Second end and resonance electricity
Hold CrFirst end be connected, resonant capacitance CrSecond end simultaneously with switching tube S2Electric current flow into end and switching tube S3Electric current
It flows into end to be connected, switching tube S3Electric current outflow end and capacitor C2First end be connected, capacitor C2Second end simultaneously and switching tube
S2Electric current outflow end, switching tube S1Electric current outflow end and capacitor C1Second end be connected.
As preferably, switching tube S1, switching tube S2With switching tube S3It is all made of the realization of GaN switching tube.
As preferably, coupling inductance L1With coupling inductance L2It is all made of plane magnetic element realization.
The present invention is based on existing Buck/Boost topological structures to propose a kind of high no-load voltage ratio of the high frequency based on coupling inductance
Two-way DC/DC converter realizes no-voltage conducting and the zero-current switching of switching tube, and then make by introducing resonance link
The switch stress for obtaining the DC/DC converter is small, and system effectiveness is high.
Detailed description of the invention
The high frequency height change to of the present invention based on coupling inductance will hereinafter be carried out based on the embodiments and with reference to the accompanying drawings
It is described in more detail than two-way DC/DC converter, in which:
Fig. 1 is the circuit diagram of the two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance described in embodiment；
Fig. 2 is the equivalent circuit schematic of the DC/DC converter under the boost mode that embodiment refers to, wherein RL
For load, VinAnd VoutRespectively input side voltage and outlet side voltage, N1And N2The respectively circle of ideal transformer primary coil
Several and secondary coil the number of turns, Vds1For switching tube S1Drain electrode and source electrode between voltage, Vds2For switching tube S2Drain electrode and source
Voltage between pole, Vds3For switching tube S3Drain electrode and source electrode between voltage, VLmFor magnetizing inductance LmBoth end voltage, VLrFor
Leakage inductance LrBoth end voltage, VCrFor resonant capacitance CrBoth end voltage, ids1、ids2And ids3Respectively flow through switching tube S1, switching tube S2
With switching tube S3Electric current, iLrTo flow through leakage inductance LrElectric current；
Fig. 3 is the first operation mode figure of the DC/DC converter under the boost mode that embodiment refers to, wherein when
When component is grey, indicates its shutdown or do not work；
Fig. 4 is the second operation mode figure of the DC/DC converter under the boost mode that embodiment refers to；
Fig. 5 is the third operation mode figure of the DC/DC converter under the boost mode that embodiment refers to；
Fig. 6 is the 4th operation mode figure of the DC/DC converter under the boost mode that embodiment refers to；
Fig. 7 is the 5th operation mode figure of the DC/DC converter under the boost mode that embodiment refers to；
Fig. 8 is the 6th operation mode figure of the DC/DC converter under the boost mode that embodiment refers to；
Fig. 9 is the 7th operation mode figure of the DC/DC converter under the boost mode that embodiment refers to；
Figure 10 is the key operation waveforms figure of the DC/DC converter under the boost mode that embodiment refers to, wherein
Vgs1For switching tube S1Grid and source electrode between voltage, Vgs2For switching tube S2Grid and source electrode between voltage, Vgs3For
Switching tube S3Grid and source electrode between voltage, T be the DC/DC converter switch periods, TonFor high level time,
ZCS represents zero-current switching；
Figure 11 is the voltage gain contrast curve chart for the DC/DC converter that embodiment refers to；
Figure 12 is the output voltage simulation waveform of the DC/DC converter under the boost mode that embodiment refers to；
Figure 13 is the switching tube S under the boost mode that embodiment refers to1Driving voltage and voltage and current simulation waveform；
Figure 14 is the switching tube S under the boost mode that embodiment refers to2Driving voltage and voltage and current simulation waveform；
Figure 15 is the switching tube S under the boost mode that embodiment refers to3Driving voltage and voltage and current simulation waveform；
Figure 16 is the output voltage simulation waveform of the DC/DC converter under the decompression mode that embodiment refers to；
Figure 17 is the switching tube S under the decompression mode that embodiment refers to1Driving voltage and voltage and current simulation waveform；
Figure 18 is the switching tube S under the decompression mode that embodiment refers to2Driving voltage and voltage and current simulation waveform；
Figure 19 is the switching tube S under the decompression mode that embodiment refers to3Driving voltage and voltage and current simulation waveform.
Specific embodiment
The two-way DC/DC converter of the high no-load voltage ratio of the high frequency based on coupling inductance of the present invention is made below in conjunction with attached drawing
It further illustrates.
Embodiment: the present embodiment is explained in detail below with reference to Fig. 1~Figure 19.
The two-way DC/DC converter of the high no-load voltage ratio of high frequency described in the present embodiment based on coupling inductance includes that the first filtering is single
Member, buck unit and the second filter unit；
When the DC/DC converter works in boost mode, the first filter unit is for the input to buck unit
D. c. voltage signal is filtered, and the second filter unit is for being filtered the output d. c. voltage signal of buck unit；
When the DC/DC converter works in decompression mode, the second filter unit is for the input to buck unit
D. c. voltage signal is filtered, and the first filter unit is for being filtered the output d. c. voltage signal of buck unit；
Buck unit includes coupling inductance L1, coupling inductance L2, resonant capacitance Cr, switching tube S1, switching tube S2And switch
Pipe S3, switching tube S1, switching tube S2With switching tube S3Have body diode；
Coupling inductance L1, coupling inductance L2, switching tube S1With switching tube S3Constitute coupling inductance formula boost circuit；
Resonant capacitance CrLC series resonance unit, LC series resonance unit, switch are constituted with the leakage inductance of two coupling inductances
Pipe S2With switching tube S3Constitute half-bridge converter topological structure.
First filter unit and the second filter unit of the present embodiment are respectively capacitor C1With capacitor C2。
In the present embodiment, capacitor C1First end and coupling inductance L1First end be connected, coupling inductance L1Second end
Simultaneously with coupling inductance L2First end and switching tube S1Electric current flow into end be connected, coupling inductance L2Second end and resonance electricity
Hold CrFirst end be connected, resonant capacitance CrSecond end simultaneously with switching tube S2Electric current flow into end and switching tube S3Electric current
It flows into end to be connected, switching tube S3Electric current outflow end and capacitor C2First end be connected, capacitor C2Second end simultaneously and switching tube
S2Electric current outflow end, switching tube S1Electric current outflow end and capacitor C1Second end be connected.
The switching tube S of the present embodiment1, switching tube S2With switching tube S3It is all made of the realization of GaN switching tube.
The coupling inductance L of the present embodiment1With coupling inductance L2It is all made of plane magnetic element realization.
The two-way DC/DC converter of the high no-load voltage ratio of high frequency described in the present embodiment based on coupling inductance is operable with boost mode
When with decompression mode, below will in a boost mode for, it is high that high frequency based on coupling inductance described in the present embodiment is described in detail
The working principle of the two-way DC/DC converter of no-load voltage ratio:
As shown in Fig. 2, buck unit includes coupling inductance L1, coupling inductance L2, resonant capacitance Cr, switching tube S1, switch
Pipe S2With switching tube S3.For simplifying the analysis, by coupling inductance L1With coupling inductance L2It is equivalent to ideal 1:n transformer, excitation
Inductance LmWith leakage inductance Lr.The DC/DC converter can be regarded as by a coupling inductance formula boost circuit and a band as a result,
It is made of the half-bridge converter topological structure of series resonant tank.Coupling inductance formula boost circuit includes coupling inductance L1, coupling
Close inductance L2, switching tube S1With switching tube S3, the half-bridge converter topological structure with series resonant tank includes leakage inductance Lr, it is humorous
Shake capacitor Cr, switching tube S2With switching tube S3。
In each switch periods T, switching tube S1With switching tube S2Switch state it is consistent, with switching tube S3Switch shape
State is complementary.As switching tube S1With switching tube S2When conducting, switching tube S2Resonant tank, leakage inductance L are provided for passive devicerWith resonance
Capacitor CrResonance, the realization for working in Sofe Switch state for switching tube provide condition.As switching tube S3When conducting, resonant capacitance Cr
Resonant series are in voltage VinWith voltage VoutBetween, voltage VCrIt can further lifting system voltage gain.
From the angle analysis of energy, as switching tube S1With switching tube S2When conducting, energy stores are in resonant capacitance Cr, leakage inductance
LrWith magnetizing inductance LmIn.Resonant capacitance CrWith leakage inductance LrEnergy is also buffered while resonance.A part of storage originally can be undertaken
Energy in coupling inductance, to improve the power density of the DC/DC converter.At the same time, by coupling inductance primary side
Leakage inductance LrAs resonant inductance, the volume of the DC/DC converter is also reduced while reducing passive device quantity.When
Switching tube S3When conducting, resonant capacitance Cr, leakage inductance LrWith magnetizing inductance LmThe energy of middle storage discharges, to load RLEnergy is provided.
Wherein, electric current iLmThe presence of negative value is needed, to ensure switching tube S1With switching tube S2Work in Sofe Switch state.
In a switch periods T, the DC/DC converter includes 7 switch mode:
First operation mode (t0-t1): as shown in Figure 3.Under the operation mode, switching tube S1, switching tube S2And switching tube
S3It is held off.In t0Moment, to guarantee switching tube S3Zero-current switching, electric current iLrIt need to be negative value.Therefore, electric current iLm
It also is negative value.In switching tube S3After shutdown, switching tube S1With switching tube S2A dead time t is needed before conductingd, dead
Area time tdIt is interior, it is the electric current i of negative valueLrFor switching tube S2Parasitic capacitance reverse charging, reduce voltage Vds2.As voltage Vds2Drop
When to zero, electric current ids2Flow through switching tube S2Body diode, to make switching tube S2Realize no-voltage conducting.Switching tube S1Zero
Voltage opening process and switching tube S2It is identical.When the DC/DC converter work in periodic stable state, t1Moment
Electric current ids1Value be zero, greatly reduce conduction loss.
Second operation mode (t1-t2): as shown in Figure 4.In t1Moment, switching tube S1With switching tube S2Conducting, switching tube S3
It is still held off, resonant capacitance CrWith leakage inductance LrGenerate resonance.According to superposition theorem, the DC/DC converter can regard as by
Part is constituted.A part, voltage VinIt is coupled to secondary side by coupling inductance, is resonant capacitance CrCharging.Another part, input
The energy storage of side is in magnetizing inductance LmIn, at this point, voltage VLmIt is positive, electric current iLmSlowly rise, until t2Moment, electric current iLm=
0。
Third operation mode (t2-t3): as shown in Figure 5.Under the operation mode, resonant capacitance CrWith leakage inductance LrContinue humorous
Vibration, and guarantee electric current iLrIt is always negative value.Input terminal is directly leakage inductance LrWith resonant capacitance CrCharging.Voltage VLmStill it is positive, electricity
Flow iLmIt also is positive direction.Therefore, electric current iLmIt is linearly increasing.
4th operation mode (t3-t4): as shown in Figure 6.Under the operation mode, switching tube S1With switching tube S2Holding is led
It is logical, switching tube S3It is held off.As energy of the input terminal to resonant tank provides, electric current iLrIt is increased to positive value, and in t4When
Reach maximum quarter.At this point, electric current ids1Resonance can meet switching tube S to zero1Zero-current switching.Voltage VLmFor nVin, can regard as
It is constant value.Electric current iLmLinear rise is to iLm(t4).Switching tube S1Electric current are as follows:
ids1(t)=niLm(t)-(n+1)iLr (1)
By adjusting turn-on time, ids1(t4) it is approximately zero, switching tube S1Turn-off power loss it is negligible.
5th operation mode (t4-t5): as shown in Figure 7.In t4Moment, switching tube S1, switching tube S2With switching tube S3It is
Off state, the stage are dead time.Positive electric current iLrFlow through switching tube S3Body diode, be switching tube S3Zero electricity
Pressure conducting creates conditions.At this point, resonant capacitance CrWith leakage inductance LrR is loaded in the same direction with input terminal oneLTransmit energy.
6th operation mode (t5-t6): as shown in Figure 8.In t5Moment, switching tube S3Conducting, electric current iLrFlow through switching tube
S3, magnetizing inductance Lm, leakage inductance LrWith resonant capacitance CrElectric discharge, energy are transmitted directly to output end from input terminal.At this point, ids3(t)
=iLr(t), iLm(t)=(1+1/n) iLr(t).Assuming that resonant capacitance CrIt is sufficiently large, voltage VCrFor constant value V can be regarded asCr, thus coupling
Close the voltage V of inductanceT=-(Vout-VCr-Vin) also it is considered as constant value, electric current iLr(t) and electric current iLm(t) linear decline.
7th operation mode (t6-t0: as shown in Figure 9.In switching tube S3There can be one of short duration time before shutdown, it is humorous
Shake capacitor CrLead to electric current iLrReverse flow, so that switching tube S3Parasitic capacitance discharge, realize switching tube S3Zero current
Shutdown.
The effect of the two-way DC/DC converter of the high no-load voltage ratio of high frequency described in lower surface analysis the present embodiment based on coupling inductance:
Since the operation mode of the DC/DC converter includes two different resonant networks, voltage conversion ratio is pushed away
It leads complex.It is calculated to simplify, for resonant capacitance CrBoth end voltage VCr, since DC voltage component is much higher than alternating current
Component is pressed, when deriving voltage transmission ratio, by resonant capacitance CrBoth end voltage is approximatively considered as a constant pressure VCr.It is switched at one
In cycle T, magnetizing inductance LmWith leakage inductance LrIt is all satisfied voltage-second balance.Therefore, the gain of the DC/DC converter can be pushed away by following
It leads and obtains:
As switching tube S3When conducting, voltage relationship is known as below according to KVL:
According to KCL it is found that becauseSo:
It can be obtained by formula (2) and formula (3):
From the above equation, we can see that leakage inductance LrWith magnetizing inductance LmThe constant that is negative of voltage, the equal linear decline of electric current.
As switching tube S3When shutdown, switching tube S1With switching tube S2When conducting, voltage VinTo leakage inductance LrWith magnetizing inductance LmIt fills
Electricity, positive constant can be regarded as by analyzing its voltage through following formula:
Formula (4) and formula (5) simultaneous can be obtained since inductance is all satisfied voltage-second balance in entire switch periods T:
In formula, D is duty ratio；
Thus the voltage gain of the DC/DC converter is obtained:
In fact, the coefficient of coup due to transformer is higher, leakage inductance LrFar smaller than magnetizing inductance Lm.So the DC/
The voltage gain of DC converter can be approximated by
The voltage for the DC/DC converter that existing booster converter and the present embodiment are proposed is set forth in table 1 and Figure 11
Gain formula and voltage gain curve comparison, it can be seen that in actual duty cycle D=0.33~0.63, same duty cycle condition
Under, the voltage gain highest for the DC/DC converter that the present embodiment is proposed, hence it is evident that greater than the Boost with coupling inductance.
1 step-up DC of table/DC topology voltage gain compares
In order to verify the DC/DC converter, the present embodiment has carried out simulation analysis to the DC/DC converter proposed,
Related simulation waveform is as shown in Figure 12~Figure 19.The operating condition of the converter are as follows: high-pressure side 48V, low-pressure side 5V, nominal operation
Frequency fs=750kHZ.Parameters design based on proposition, specific device parameters type selecting are as shown in table 2 below.
2 system parameter of table
The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance described in the present embodiment works in boost mode
When, input voltage 5V, output voltage 48V.According to Figure 12~Figure 19 it is found that due to resonant tank effect, switching tube
The due to voltage spikes at both ends is significantly smaller, and voltage stress is also smaller.10 times of voltage gain of the topological realization exports more steady
It is fixed.Since the leakage inductance of coupling inductance participates in resonance, the oscillation at switching tube both ends is also smaller.It can be, it is evident that opening from figure
Closing pipe realizes no-voltage conducting, and realizes zero-current switching substantially, greatly improves switch tube efficiency.
The two-way DC/DC converter of the high no-load voltage ratio of high frequency described in the present embodiment based on coupling inductance uses the third generation and partly leads
Body device GaN and plane magnetic element, it is with good performance in high frequency, and the volume of system is further reduced, it mentions
The power density of system is risen.
Although describing the present invention herein with reference to specific embodiment, it should be understood that, these realities
Applying example only is the example of principles and applications.It should therefore be understood that can be permitted exemplary embodiment
More modifications, and can be designed that other arrangements, without departing from spirit of the invention as defined in the appended claims and
Range.It should be understood that different appurtenances can be combined by being different from mode described in original claim
It is required that and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used at it
In his embodiment.
Claims (5)
1. the two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance, which is characterized in that the DC/DC converter includes
First filter unit, buck unit and the second filter unit；
When the DC/DC converter works in boost mode, the first filter unit is used for the input direct-current to buck unit
Voltage signal is filtered, and the second filter unit is for being filtered the output d. c. voltage signal of buck unit；
When the DC/DC converter works in decompression mode, the second filter unit is used for the input direct-current to buck unit
Voltage signal is filtered, and the first filter unit is for being filtered the output d. c. voltage signal of buck unit；
Buck unit includes coupling inductance L1, coupling inductance L2, resonant capacitance Cr, switching tube S1, switching tube S2With switching tube S3,
Switching tube S1, switching tube S2With switching tube S3Have body diode；
Coupling inductance L1, coupling inductance L2, switching tube S1With switching tube S3Constitute coupling inductance formula boost circuit；
Resonant capacitance CrLC series resonance unit, LC series resonance unit, switching tube S are constituted with the leakage inductance of two coupling inductances2With
Switching tube S3Constitute half-bridge converter topological structure.
2. the two-way DC/DC converter of the high no-load voltage ratio of high frequency as described in claim 1 based on coupling inductance, which is characterized in that the
One filter unit and the second filter unit are respectively capacitor C1With capacitor C2。
3. the two-way DC/DC converter of the high no-load voltage ratio of high frequency as claimed in claim 2 based on coupling inductance, which is characterized in that electricity
Hold C1First end and coupling inductance L1First end be connected, coupling inductance L1Second end simultaneously with coupling inductance L2First
End and switching tube S1Electric current flow into end be connected, coupling inductance L2Second end and resonant capacitance CrFirst end be connected, resonance electricity
Hold CrSecond end simultaneously with switching tube S2Electric current flow into end and switching tube S3Electric current flow into end be connected, switching tube S3Electricity
Flow outflow end and capacitor C2First end be connected, capacitor C2Second end simultaneously with switching tube S2Electric current outflow end, switching tube S1
Electric current outflow end and capacitor C1Second end be connected.
4. the two-way DC/DC converter of the high no-load voltage ratio of high frequency as claimed in claim 3 based on coupling inductance, which is characterized in that open
Close pipe S1, switching tube S2With switching tube S3It is all made of the realization of GaN switching tube.
5. the two-way DC/DC converter of the high no-load voltage ratio of high frequency as claimed in claim 4 based on coupling inductance, which is characterized in that coupling
Close inductance L1With coupling inductance L2It is all made of plane magnetic element realization.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492750A (en) * | 2019-07-08 | 2019-11-22 | 哈尔滨工业大学 | A kind of high step-down ratio DC/DC converter |
| CN110504836A (en) * | 2019-09-24 | 2019-11-26 | 哈尔滨工业大学 | Buck converter based on STC circuit Yu resonance Buck circuit |
| CN110932557A (en) * | 2019-11-29 | 2020-03-27 | 山东科技大学 | High-gain quasi-resonant DC-DC converter based on voltage doubling rectifying circuit |
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| WO2023102740A1 (en) * | 2021-12-07 | 2023-06-15 | 华为技术有限公司 | Switch mode power supply and control method thereof, power supply system and electronic device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780086A (en) * | 2014-01-23 | 2014-05-07 | 江苏杰瑞科技集团有限责任公司 | Dual-output bus type high-gain converter based on coupling inductor voltage-multiplying structure |
| US20150115911A1 (en) * | 2013-10-28 | 2015-04-30 | International Rectifier Corporation | Adaptive Off Time Control Scheme for Semi-Resonant and Hybrid Converters |
| CN106100333A (en) * | 2016-06-21 | 2016-11-09 | 国海峰 | High-power soft switch two-way DC DC converter circuit |
| CN107017772A (en) * | 2017-06-02 | 2017-08-04 | 哈尔滨工业大学 | A kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling |
| CN107404231A (en) * | 2016-05-18 | 2017-11-28 | 英飞凌科技奥地利有限公司 | The method and apparatus being controlled for the converter that shaken to Semi-resonance harmony |
| US10211734B1 (en) * | 2018-07-17 | 2019-02-19 | Huang-Jen Chiu | Bidirectional DC-DC converter |
-
2019
- 2019-04-17 CN CN201910309390.3A patent/CN109980934A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150115911A1 (en) * | 2013-10-28 | 2015-04-30 | International Rectifier Corporation | Adaptive Off Time Control Scheme for Semi-Resonant and Hybrid Converters |
| CN103780086A (en) * | 2014-01-23 | 2014-05-07 | 江苏杰瑞科技集团有限责任公司 | Dual-output bus type high-gain converter based on coupling inductor voltage-multiplying structure |
| CN107404231A (en) * | 2016-05-18 | 2017-11-28 | 英飞凌科技奥地利有限公司 | The method and apparatus being controlled for the converter that shaken to Semi-resonance harmony |
| CN106100333A (en) * | 2016-06-21 | 2016-11-09 | 国海峰 | High-power soft switch two-way DC DC converter circuit |
| CN107017772A (en) * | 2017-06-02 | 2017-08-04 | 哈尔滨工业大学 | A kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling |
| US10211734B1 (en) * | 2018-07-17 | 2019-02-19 | Huang-Jen Chiu | Bidirectional DC-DC converter |
Non-Patent Citations (2)
| Title |
|---|
| K. I. HWU: "Ultrahigh Step-Down Converter", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》 * |
| MOHEN ZHU: "High Step-up/Step-down Soft-switching Bidirectional DC/DC Converter Based on GaN HEMT", 《IEEE》 * |
Cited By (14)
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|---|---|---|---|---|
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| CN110504836A (en) * | 2019-09-24 | 2019-11-26 | 哈尔滨工业大学 | Buck converter based on STC circuit Yu resonance Buck circuit |
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| WO2023102740A1 (en) * | 2021-12-07 | 2023-06-15 | 华为技术有限公司 | Switch mode power supply and control method thereof, power supply system and electronic device |
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