CN102361403A - Staggered series direct current (DC)/DC converter circuit - Google Patents

Staggered series direct current (DC)/DC converter circuit Download PDF

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CN102361403A
CN102361403A CN2011101567186A CN201110156718A CN102361403A CN 102361403 A CN102361403 A CN 102361403A CN 2011101567186 A CN2011101567186 A CN 2011101567186A CN 201110156718 A CN201110156718 A CN 201110156718A CN 102361403 A CN102361403 A CN 102361403A
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circuit
module
resonant
inductance
input
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李永富
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ZHUHAI TAITAN NEW ENERGY SYSTEM CO Ltd
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ZHUHAI TAITAN NEW ENERGY SYSTEM CO Ltd
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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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Abstract

The invention discloses a staggered series direct current (DC)/DC converter circuit and aims to provide a DC/DC converter circuit which is small in ripple wave, high in conversion efficiency, convenient to manufacture, smaller in size and high in performance. The staggered series DC/DC converter circuit comprises an input DC voltage, a DC/DC module, a filtering circuit, a load and a control circuit, wherein the DC/DC module comprises a first module (DC1) and a second module (DC2), which have the same structure; input ends of the first module (DC1) and the second module (DC2) are connected in parallel and then connected with the input DC voltage; output ends of the first module (DC1) and the second module (DC2) are connected in series and then connected with the filtering circuit and the load; the control circuit is connected with the DC/DC module; and control signals of the first module (DC1) and the second module (DC2) are staggered at a certain angle.

Description

Interleaved series DC/DC converter circuit
Technical field
The present invention relates to a kind of interleaved series DC/DC converter circuit.
Background technology
In special equipment market; Like aspects such as big voltage trickle charger and electric automobile charging stations, increasing to power-supply device demand with several hectovolts, and can reach more than 90% for conversion efficiency; Power factor is greater than 0.99, and the miniaturization Switching Power Supply that meets the EMC requirement is more rare.The Switching Power Supply (like the disclosed three-level LLC series resonance of Chinese patent CN03150858.8 DC/DC converter) of the little electric current of the conventional big voltage of output; Though have the advantage of LLC series resonance-type DC/DC converter; And the requirement through the voltage stress that reduces each switching tube has realized exporting big voltage still when big voltage is exported, exists very big ripple; Reduced the stability of whole system; Also inevitably increase simultaneously the volume of input and output capacitors, caused the volume of whole DC/DC converter to be restricted, be difficult to realize the purpose of miniaturization.In sum, at present the DC/DC converter in the prior art exists that ripple is big, conversion efficiency is low, is difficult for the defective of miniaturization.
Summary of the invention
Problem to be solved by this invention is the defective that overcomes above-mentioned prior art, provides a kind of ripple that adopts the interleaved series technology to constitute little, and conversion efficiency is high, and is convenient to make the high performance DC/DC converter circuit of more miniaturization.
Technical scheme of the present invention is: a kind of interleaved series DC/DC converter circuit; It comprises input direct voltage, at least two DC/DC modules, filter circuit and loads; It also comprises control circuit; Said DC/DC module comprises first module and second module; Said first module is identical with second modular structure, and the input of the input of said first module and the second module said input direct voltage that is connected in parallel is connected said filter circuit and load after the output series connection of the output of said first module and second module; Said control circuit is connected with said DC/DC module, and said control circuit is to the control signal of first module and second module certain angle that staggers.
The enforcement circuit of said first module and second module comprises: bleeder circuit, clamp circuit, switching circuit, resonant circuit, isolating transformer and rectification circuit; Said bleeder circuit comprises the first dividing potential drop electric capacity and the second dividing potential drop electric capacity; Be connected in parallel on the input that said input direct voltage two ends become said first module after the said first dividing potential drop electric capacity and the second dividing potential drop capacitances in series; Said clamp circuit comprises first diode and second diode; The positive pole of said first diode is connected with the negative pole of second diode and is connected with ground wire with the series connection point of the said first dividing potential drop electric capacity and the second dividing potential drop electric capacity; Said switching circuit comprises that first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube are in series; Said switching circuit is parallelly connected with said bleeder circuit; Said first switching tube is connected the negative pole of said first diode with the series connection point of second switch pipe, said the 3rd switching tube is connected the positive pole of said second diode with the series connection point of the 4th switching tube, and said resonant circuit comprises first resonant capacitance, second resonant capacitance, resonant inductance and magnetizing inductance; It is parallelly connected after said first resonant capacitance is connected with second resonant capacitance with said switching circuit; One end of said resonant inductance connects the series connection point of said second switch Guan Yudi three switching tubes, and the other end of said resonant inductance connects an end of said magnetizing inductance, and the other end of said magnetizing inductance connects the series connection point of said first resonant capacitance and second resonant capacitance; Said rectification circuit is formed bridge rectifier by four rectifier diodes; Elementary and the said magnetizing inductance of said isolating transformer is parallelly connected, the ac input end of the said bridge rectifier of secondary connection of said isolating transformer, and the dc output end of said bridge rectifier connects filter circuit and load.
Another of said first module and second module implemented circuit and comprised: switching circuit, resonant circuit, isolating transformer and rectification circuit; The input of said first module of direct voltage two ends parallel connection; Said switching circuit comprises that first switching tube, second switch pipe are in series; Said switching circuit is parallelly connected with said direct voltage two ends to be the input of said first module; Said resonant circuit comprises first resonant capacitance, second resonant capacitance, resonant inductance and magnetizing inductance, and parallelly connected with said switching circuit after said first resonant capacitance is connected with second resonant capacitance, an end of said resonant inductance connects the series connection point of said first switching tube and second switch pipe; The other end of said resonant inductance connects an end of said magnetizing inductance; The other end of said magnetizing inductance connects the series connection point of said first resonant capacitance and second resonant capacitance, and said rectification circuit is formed bridge rectifier by four rectifier diodes, and the elementary and said magnetizing inductance of said isolating transformer is parallelly connected; The ac input end of the said bridge rectifier of secondary connection of said isolating transformer, the dc output end of said bridge rectifier connects filter circuit and load.
In above-mentioned two kinds of embodiments, said switching circuit is connected with said control circuit, and said control circuit is 90 degree to the control signal of first module and second module angle that staggers.
In above-mentioned two kinds of embodiments, said filtered electrical routing capacitor constitutes.
The invention has the beneficial effects as follows: owing to the present invention includes input direct voltage, DC/DC module, filter circuit and load; It also comprises control circuit; Said DC/DC module comprises first module and second module; Said first module is identical with second modular structure, and the input of the input of said first module and the second module said input direct voltage that is connected in parallel is connected said filter circuit and load after the output series connection of the output of said first module and second module; Said control circuit is connected with said DC/DC module, and said control circuit is to the control signal of first module and second module certain angle that staggers; Again because existing LLC resonance oscillation semi-bridge DC/DC converter occupies most of locus in the composition of whole power supply; And reduce the space occupancy of this part circuit as far as possible; The natural heat dissipation area that this part element is provided is the main mode of dwindling whole power volume; And to reduce ripple as far as possible be the assurance that improves DC/DC transducer performance and efficient; The present invention is just with single powerful DC/DC converter, splits into the mode of two DC/DC converters through interleaved series and realizes its power output, so this converter input, output ripple are little; Conversion efficiency is high, and is convenient to make and becomes the little electric current of the big voltage of more miniaturization, high performance DC/DC converter.
Description of drawings
Fig. 1 is the sketch map of the three-level LLC resonance oscillation semi-bridge DC/DC converter of circuit of the present invention;
Fig. 2 is the drive waveforms figure of interleaved series DC/DC converter of the present invention;
Fig. 3 is the sketch map of two level LLC resonance oscillation semi-bridge DC/DC converters of circuit of the present invention;
Fig. 4 ~ Fig. 9 is the fundamental diagram of interleaved series DC/DC converter of the present invention under different mode.
Embodiment
The present invention includes input direct voltage, DC/DC module, filter circuit and load; Said DC/DC module comprises the first module DC1 and the second module DC2; The said first module DC1 is identical with the second module DC2 structure; The input of the input of the said first module DC1 and the second module DC2 said input direct voltage that is connected in parallel; Be connected said filter circuit and load after the output series connection of the output of the said first module DC1 and the second module DC2, said control circuit is connected with said DC/DC module, the control signal of the said first module DC1 and the second module DC2 certain angle that staggers.The output of the described first module DC1 is connected with the output of the second module DC2; Promptly the negative pole of the output voltage V o1 of first module links to each other with the positive pole of the output voltage V o2 of second module; Behind filter circuit 160, obtain total output voltage V o; Described filter circuit 160 is made up of capacitor C5, and being used for that pulse current is changed into a direct current voltage provides energy to the output loading circuit.Be appreciated that; The module of interleaved series is implemented to be the identical DC/DC module of two or more structures; Said switching circuit in the identical DC/DC module of said two or more structures is connected with said control circuit, and the control signal of the DC/DC module that said two or more structures the are identical angle that staggers in the specific implementation can be 90 degree.
Explain below in conjunction with accompanying drawing 1; Present embodiment adopts interleaved series LLC resonance oscillation semi-bridge DC/DC converter; Be made up of two identical DC/DC modules of structure, two module control signals stagger 90 degree to realize staggered input, and output obtains total output voltage through series system behind filter circuit.DC/DC module in the interleaved series LLC resonance oscillation semi-bridge DC/DC converter is mainly by bleeder circuit, switching circuit, clamp circuit; Resonant circuit; Isolating transformer, rectification circuit are formed, and resonant circuit has partly adopted the access way parallelly connected with switching circuit after two capacitances in series.Wherein the composition structure and the mode of operation of two modules are identical, so only first module DC1 is set forth in detail.
The first module DC1 is used to produce first via output voltage V o1, and it comprises bleeder circuit 110, clamp circuit 120, switching circuit 130, resonant circuit 140, isolating transformer T1 and rectification circuit 150; Said bleeder circuit 110 is composed in series by the first dividing potential drop capacitor C 1 and the second dividing potential drop capacitor C 2, is connected in parallel on input, is used for input voltage vin is divided equally; Produce two and be merely the half the voltage source of input voltage; Said clamp circuit 120 is made up of two diode D1, D2, and wherein the first diode D1 anode is connected in the mid point of dividing potential drop electric capacity, and negative electrode connects between the contact of the first switching tube S1 source electrode and second switch pipe S2 drain electrode; The second diode D2 negative electrode is connected in the mid point of dividing potential drop electric capacity; Anode connects between the contact of the 3rd switching tube S3 source electrode and the 4th switching tube S4 drain electrode, and said switching circuit 130 is in series by 4 switching tube S1, S2, S3, S4, is used for direct voltage is reverse into square-wave voltage or stepped voltage; Said resonant circuit 140 comprises resonant capacitance C11, C12, resonant inductance Ls1 and magnetizing inductance Lm1; Wherein, series connection constitutes resonant capacitance with C12 by two capacitor C 11, is parallel to switching circuit 130; Its mid point links to each other with the former limit of isolating transformer T1 one end; 12 alternations of two resonant capacitance C11 resonant capacitor C to resonant capacitance C11 discharge, are charged to resonant capacitance C11 in the time of resonant capacitance C12 discharge in the time of i.e. resonant capacitance C12 charging.Resonant inductance Ls1 one end links to each other with the source electrode of second switch pipe S2, and the other end links to each other with the former limit of the isolating transformer T1 other end, and magnetizing inductance Lm1 is connected in parallel on the former limit of said isolating transformer T1; The secondary of said isolating transformer T1 links to each other with rectification circuit 150; Described rectification circuit 150 is made up of 4 diode D11, D12, D13, D14, wherein D11 and D14 be rectification circuit to pipe, D12 and D13 be rectification circuit to managing; D11 and D12 series connection; D13 and D14 series connection, the anode of the secondary one termination D11 of isolating transformer T1, the negative electrode of another termination D14; The negative electrode of D11 and D13 connects the positive pole of output voltage V o1, and the anode of D12 and D14 connects the negative pole of output voltage V o1.Wherein, rectification circuit 150 can adopt full bridge rectifier or center-tap rectifier circuit, resonant inductance L S1, L S2Be the outer coilloading of transformer former limit series connection, magnetizing inductance L M1, L M2Be the big magnetizing inductance of transformer.
The drive signal of 4 switching tube S5, S6, S7, S8 is as shown in Figure 2 among 4 switching tube S1 among first module DC1, S2, S3, S4 and second the module DC2; S1 and S2 are same drive signal basically, and just S1 a bit turn-offs than S2 slightly ahead of time, and S3 and S4 are same drive signal basically; Just S4 a bit turn-offs than S3 slightly ahead of time; The drive signal of S1, S2 and S3, S4 is a complementary signal, and duty ratio all is 50%, has certain dead band between S1 (S2) and S4 (S3) drive signal; S5 ~ S8 has and the drive signal of S1 ~ S4 same nature; But the control signal of S5 ~ S8 and S1 ~ S4 totally staggers 90 °; To realize staggered control; Switching frequency through changing drive signal is realized the control to output voltage, and the negative pole of the first module DC1 output end vo 1 links to each other with the positive pole of the second module DC2 output end vo 2, to realize the output of Vo.
As shown in Figure 3; An alternative embodiment of the invention is to have omitted bleeder circuit 110, clamp circuit 120; The said first module DC1 comprises switching circuit 130, resonant circuit 140, isolating transformer T1 and rectification circuit 150; The input of the said first module DC1 of direct voltage two ends parallel connection; Said switching circuit 130 comprises that the first switching tube S1, second switch pipe S2 are in series; Said switching circuit 130 is parallelly connected with said direct voltage two ends to be the input of the said first module DC1; Said resonant circuit 140 comprises the first resonant capacitance C11, the second resonant capacitance C12, resonant inductance Ls1 and magnetizing inductance Lm1, and connect with second resonant capacitance C12 back and said switching circuit 130 of the said first resonant capacitance C11 is parallelly connected, and the end of said resonant inductance Ls1 connects the series connection point of said first switching tube S1 and second switch pipe S2; The other end of said resonant inductance Ls1 connects the end of said magnetizing inductance Lm1; The other end of said magnetizing inductance Lm1 connects the series connection point of the said first resonant capacitance C11 and the second resonant capacitance C12, and said rectification circuit 150 is formed bridge rectifier by four rectifier diodes, and the elementary and said magnetizing inductance Lm1 of said isolating transformer T1 is parallelly connected; The ac input end of the said bridge rectifier of secondary connection of said isolating transformer T1, the dc output end of said bridge rectifier connects filter circuit 160 and load.
Referring to Fig. 4～Fig. 9, introduce its operation principle with the described interleaved series three-level resonant transformer of above-mentioned Fig. 1 below:
A switch periods of interleaved series three-level resonant transformer can be divided into 6 mode of operations, and the current direction under the different mode marks through the mode of arrow in the drawings.The operation principle of 6 mode of operations is described below respectively:
Pattern 1, as shown in Figure 4: S 1, S 2Open-minded simultaneously.Primary current in the resonant network i P1The above-mentioned switching tube of flowing through, and be increased to maximum with sinusoidal rule forward and reduce then, flow through inductance L M1Linear the increasing of electric current; S 5, S 6S staggers 1, S 21/4 cycle is also open-minded simultaneously, its working condition and S 1, S 2The mode of opening simultaneously is identical, flows through inductance L M2Linear the increasing of electric current; While secondary diode D 11, D 14, D 21, D 23Forward conduction, for load provides energy, its electric current that flows through depends on primary current i pAnd exciting current i mPoor.
Pattern 2, as shown in Figure 5: resonant inductance L S1Electric current i P1With inductance L M1Electric current i M1Equate resonant inductance L S2Electric current i P2With inductance L M2Electric current i M2Equate that the transformer primary current reduces to zero, secondary current also reduces to zero, secondary rectifier diode D 11, D 14, D 21, D 23Zero-current switching.This moment magnetizing inductance L M1, L M2Break away from the clamping action of output voltage, participate in the resonant process between the resonant capacitance resonant inductance three respectively.Because L M1, L M2Compare L S1, L S1Big a lot, harmonic period is longer, under this pattern, can be similar to and think that resonance current is constant.
Mode 3, as shown in Figure 6: S 1Prior to S 2Turn-off S 5Prior to S 6Turn-off.A resonance current i P1Begin resonant capacitance C 11Discharge, simultaneously to C 12Charge C 12On voltage risen to V In/ 2, clamping diode D 1Conducting is further risen thereby limited voltage.While C 11On voltage be zero by clamp.This moment resonance current S that flows through 2, C 12, C 2And D 1A resonance current i P2Begin resonant capacitance C 21Discharge, simultaneously to C 22Charge C 22On voltage risen to V In/ 2, clamping diode D 3Conducting is further risen thereby limited voltage.While C 21On voltage be zero by clamp.This moment resonance current S that flows through 6, C 22, C 4And D 3
Pattern 4, as shown in Figure 7: S 3, S 4Open-minded simultaneously.Primary current in the resonant network i P1Reverse flow is through above-mentioned switching tube, and is increased to maximum with sinusoidal rule forward and reduces then, flows through inductance L M1Linear the increasing of electric current; S 5, S 6S staggers 7, S 81/4 cycle is also open-minded simultaneously, its working condition and S 1, S 2The mode of opening simultaneously is identical, flows through inductance L M2Linear the increasing of electric current; While secondary diode D 12, D 13, D 22, D 24Forward conduction, for load provides energy, its electric current that flows through depends on primary current i pAnd exciting current i mPoor.
Pattern 5, as shown in Figure 8: resonant inductance L S1Electric current i P1With inductance L M1Electric current i M1Equate resonant inductance L S2Electric current i P2With inductance L M2Electric current i M2Equate that the transformer primary current reduces to zero, secondary current also reduces to zero, secondary rectifier diode D 12, D 13, D 22, D 24Zero-current switching.This moment magnetizing inductance L M1, L M2Break away from the clamping action of output voltage, participate in the resonant process between the resonant capacitance resonant inductance three respectively.Because L M1, L M2Compare L S1, L S1Big a lot, harmonic period is longer, under this pattern, can be similar to and think that resonance current is constant.
Pattern 6, as shown in Figure 9: S 4Prior to S 3Turn-off S 8Prior to S 7Turn-off.A resonance current i P1Begin resonant capacitance C 11Charge, simultaneously to C 12Discharge C 11On voltage risen to V In/ 2, clamping diode D 2Conducting is further risen thereby limited voltage.While C 12On voltage be zero by clamp.This moment resonance current S that flows through 3, C 11, C 1And D 2A resonance current i P2Begin resonant capacitance C 22Discharge, simultaneously to C 21Charge C 21On voltage risen to V In/ 2, clamping diode D 4Conducting is further risen thereby limited voltage.While C 22On voltage be zero by clamp.This moment resonance current S that flows through 7, C 21, C 3And D 4
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only; Although the present invention is specified with reference to the foregoing description; Those of ordinary skill in the art is to be understood that; Still can make amendment or be equal to replacement the present invention, and not break away from any modification or the local replacement of the spirit and scope of the present invention, it all should be encompassed among the claim scope of the present invention.

Claims (5)

1. interleaved series DC/DC converter circuit; It comprises input direct voltage, at least two DC/DC modules, filter circuit and loads; It is characterized in that: it also comprises control circuit; Said at least two DC/DC modules comprise first module (DC1) and second module (DC2); Said first module (DC1) is identical with second module (DC2) structure, and the input of the input of said first module (DC1) and second module (DC2) the said input direct voltage that is connected in parallel is connected said filter circuit and load after the output series connection of the output of said first module (DC1) and second module (DC2); Said control circuit is connected with said DC/DC module, and said control circuit is to the control signal of first module (DC1) and second module (DC2) certain angle that staggers.
2. interleaved series DC/DC converter circuit according to claim 1; It is characterized in that: said first module (DC1) comprises bleeder circuit (110), clamp circuit (120), switching circuit (130), resonant circuit (140), isolating transformer (T1) and rectification circuit (150); Said bleeder circuit (110) comprises the first dividing potential drop electric capacity (C1) and the second dividing potential drop electric capacity (C2); Be connected in parallel on the input that said input direct voltage two ends become said first module (DC1) after said first dividing potential drop electric capacity (C1) and the series connection of the second dividing potential drop electric capacity (C2); Said clamp circuit (120) comprises first diode (D1) and second diode (D2); The positive pole of said first diode (D1) is connected with the negative pole of second diode (D2) and is connected with ground wire with the series connection point of the said first dividing potential drop electric capacity (C1) and the second dividing potential drop electric capacity (C2); Said switching circuit (130) comprises that first switching tube (S1), second switch pipe (S2), the 3rd switching tube (S3), the 4th switching tube (S4) are in series; Said switching circuit (130) is parallelly connected with said bleeder circuit (110); Said first switching tube (S1) is connected the negative pole of said first diode (D1) with the series connection point of second switch pipe (S2); Said the 3rd switching tube (S3) is connected the positive pole of said second diode (D2) with the series connection point of the 4th switching tube (S4); Said resonant circuit (140) comprises first resonant capacitance (C11), second resonant capacitance (C12), resonant inductance (Ls1) and magnetizing inductance (Lm1); It is parallelly connected after said first resonant capacitance (C11) is connected with second resonant capacitance (C12) with said switching circuit (130); One end of said resonant inductance (Ls1) connects the series connection point of said second switch pipe (S2) and the 3rd switching tube (S3); The other end of said resonant inductance (Ls1) connects an end of said magnetizing inductance (Lm1); The other end of said magnetizing inductance (Lm1) connects the series connection point of said first resonant capacitance (C11) and second resonant capacitance (C12), and said rectification circuit (150) is formed bridge rectifier by four rectifier diodes, and the elementary and said magnetizing inductance (Lm1) of said isolating transformer (T1) is parallelly connected; The ac input end of the said bridge rectifier of secondary connection of said isolating transformer (T1), the dc output end of said bridge rectifier connects filter circuit (160) and load.
3. interleaved series DC/DC converter circuit according to claim 1; It is characterized in that: said first module (DC1) comprises switching circuit (130), resonant circuit (140), isolating transformer (T1) and rectification circuit (150); The input of direct voltage two ends said first modules of parallel connection (DC1); Said switching circuit (130) comprises that first switching tube (S1), second switch pipe (S2) are in series; Said switching circuit (130) is parallelly connected with said direct voltage two ends to be the input of said first module (DC1); Said resonant circuit (140) comprises first resonant capacitance (C11), second resonant capacitance (C12), resonant inductance (Ls1) and magnetizing inductance (Lm1); It is parallelly connected after said first resonant capacitance (C11) is connected with second resonant capacitance (C12) with said switching circuit (130); One end of said resonant inductance (Ls1) connects the series connection point of said first switching tube (S1) and second switch pipe (S2); The other end of said resonant inductance (Ls1) connects an end of said magnetizing inductance (Lm1); The other end of said magnetizing inductance (Lm1) connects the series connection point of said first resonant capacitance (C11) and second resonant capacitance (C12), and said rectification circuit (150) is formed bridge rectifier by four rectifier diodes, and the elementary and said magnetizing inductance (Lm1) of said isolating transformer (T1) is parallelly connected; The ac input end of the said bridge rectifier of secondary connection of said isolating transformer (T1), the dc output end of said bridge rectifier connects filter circuit (160) and load.
4. according to claim 2 or 3 described interleaved series DC/DC converter circuits; It is characterized in that: said switching circuit (130) is connected with said control circuit, and said control circuit is 90 degree to the control signal of first module (DC1) and second module (DC2) angle that staggers.
5. according to claim 2 or 3 described interleaved series DC/DC converter circuits, it is characterized in that: said filter circuit (160) is made up of capacitor (C5).
CN2011101567186A 2011-06-13 2011-06-13 Staggered series direct current (DC)/DC converter circuit Pending CN102361403A (en)

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CN102832821A (en) * 2012-09-03 2012-12-19 徐州工业职业技术学院 Combined DC-DC (direct current-direct current) converter
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CN104079179A (en) * 2014-07-09 2014-10-01 河北先控捷联电源设备有限公司 Resonant converter and direct-current power supply
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CN110572040A (en) * 2019-09-24 2019-12-13 西北工业大学 Half-bridge LLC resonant converter interleaved parallel circuit and current-sharing control method thereof
CN116614003A (en) * 2023-07-20 2023-08-18 深圳市能效电气技术有限公司 Isolated bidirectional DC/DC conversion circuit

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CN106685187A (en) * 2015-11-10 2017-05-17 通用电气照明解决方案有限公司 Power control circuit
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CN106992683A (en) * 2017-03-14 2017-07-28 南京航空航天大学 A kind of voltage source and current source complex incentive noncontact translation circuit
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CN110071637A (en) * 2018-01-22 2019-07-30 深圳英飞源技术有限公司 A kind of power supply of wide output voltage range
CN110535347A (en) * 2019-07-31 2019-12-03 北京精密机电控制设备研究所 A kind of space electric propulsion high-voltage pulse accumulation power supply circuit
CN110572040A (en) * 2019-09-24 2019-12-13 西北工业大学 Half-bridge LLC resonant converter interleaved parallel circuit and current-sharing control method thereof
CN110572040B (en) * 2019-09-24 2021-04-02 西北工业大学 Half-bridge LLC resonant converter interleaved parallel circuit and current-sharing control method thereof
CN116614003A (en) * 2023-07-20 2023-08-18 深圳市能效电气技术有限公司 Isolated bidirectional DC/DC conversion circuit
CN116614003B (en) * 2023-07-20 2024-03-15 深圳市能效电气技术有限公司 Isolated bidirectional DC/DC conversion circuit

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Application publication date: 20120222