CN103595248A - Soft switching Boost topology circuit - Google Patents

Soft switching Boost topology circuit Download PDF

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CN103595248A
CN103595248A CN201310590660.5A CN201310590660A CN103595248A CN 103595248 A CN103595248 A CN 103595248A CN 201310590660 A CN201310590660 A CN 201310590660A CN 103595248 A CN103595248 A CN 103595248A
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capacitor
diode
coupling inductance
inductance
anode
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CN103595248B (en
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詹天文
张颖超
聂金铜
钱希森
金丽萍
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State Grid Corp of China SGCC
Jiangbei Power Supply Co of State Grid Chongqing Electric Power Co Ltd
Chongqing Communication College of China PLA
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Chongqing Communication College of China PLA
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    • 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 provides a soft switching Boost topology circuit comprising a Boost circuit and a resonance unit. The Boost circuit comprises an input unit connected with external input voltage, a boosting unit connected with the input unit, a switch unit connected with the boosting unit, and an output unit for outputting the input voltage after the input voltage is processed by the soft switching Boost topology circuit. The resonance unit is connected to the boosting unit, the switch unit and the output unit and used for achieving zero-current connection and zero-voltage disconnection of the switch unit. The soft switching Boost topology circuit has the advantages of being simple in structure, high in conversion efficiency and small in electromagnetic interference.

Description

A kind of soft switch Boost topological circuit
Technical field
The present invention relates to DC/DC conversion and power factor correction field, particularly relate to a kind of Boost circuit.
Background technology
Boost topological circuit has a wide range of applications in fields such as DC/DC conversion and power factor corrections (PFC), and the switching loss of traditional hard switching Boost topological circuit and output diode reverse recovery current will produce serious electromagnetic interference (Electromagnetic Interference is called for short EMI) when affecting conversion efficiency.
Therefore, in existing technology, start to adopt the Boost topological circuit of soft switch, to improve electromagnetic interference.Although the existing implementation for soft switch Boost topological circuit has many types, all more or less exist some problems.For example, have the soft switch that adopts increase switching tube and passive device to realize Boost topological circuit, it has improved electromagnetic interference, but conversion efficiency is not high; Or realized the soft switch of the switching tube in traditional B oost topological circuit, but the switching tube increasing is operated in hard switching state, has introduced new switching loss; Also or realized main switch in Boost topological circuit and the soft switch of auxiliary switch, but increased voltage or the current stress of switching tube; Or realized main switch in Boost topological circuit and the soft switch of auxiliary switch, but the drive circuit that auxiliary switch need to be isolated has increased the complexity of control strategy or circuit structure; In addition, only also there is the soft switch of realizing Boost topological circuit by increasing passive device, but all have that conversion efficiency is not high, electric current and voltage stress is large or the problem such as circuit structure is complicated.
Summary of the invention
The shortcoming of prior art, the object of the present invention is to provide a kind of soft switch Boost topological circuit in view of the above, not high and produce the problem of serious electromagnetic interference (EMI) for solving conversion efficiency in prior art Boost topological circuit.
For achieving the above object and other relevant objects, the invention provides a kind of soft switch Boost topological circuit, comprise Boost booster circuit and resonant element, described Boost booster circuit comprise connect external input voltage input unit, connect described input unit boosting unit, connect the switch element of described boosting unit and the output unit that described input voltage is exported after described soft switch Boost topological circuit is processed; Described resonant element is connected in described boosting unit, switch element and output unit, for realizing zero current turning-on and the no-voltage of described switch element, turn-offs.
Particularly, described input unit comprises capacitor C in, described boosting unit comprises inductance L 1, described switch element comprises metal-oxide-semiconductor Q 1, described output unit comprises diode D 0and capacitor C 0, described diode D 0anode is connected with described resonant element, described diode D 0negative electrode connects described capacitor C 0positive pole, described capacitor C 0minus earth, described capacitor C intwo ends connect the two ends of input voltage, simultaneously described capacitor C inpositive pole connect described inductance L 1one end, described inductance L 1the other end be connected to described metal-oxide-semiconductor Q 1drain electrode or described resonant element.
Further, described resonant element comprises coupling inductance L 2with L 3, capacitor C 1, capacitor C 2, diode D 1with diode D 2, described coupling inductance L 2different name end and described inductance L 1the described other end, described capacitor C 2positive pole and the drain electrode of described metal-oxide-semiconductor be connected, described coupling inductance L 2same Name of Ends and described diode D 1negative electrode, described capacitor C 1anodal and described diode D 0anode is connected, described capacitor C 2negative pole connect described diode D 1anode and described coupling inductance L 3different name end, described coupling inductance L 3same Name of Ends be connected to described diode D 2negative electrode, described diode D 2anode and described capacitor C 1minus earth.
Further, described resonant element can also be to comprise coupling inductance L 2with L 3, capacitor C 1, capacitor C 2, diode D 1with diode D 2, described coupling inductance L 2different name end and described capacitor C 2the drain electrode of positive pole, described metal-oxide-semiconductor connect, described coupling inductance L 2same Name of Ends and described inductance L 1the other end, described diode D 1negative electrode, described capacitor C 1anodal and described output unit in diode D 0anode be connected, described capacitor C 2negative pole connect described diode D 1anode and described coupling inductance L 3different name end, described coupling inductance L 3same Name of Ends be connected to described diode D 2negative electrode, described diode D 2anode and described capacitor C 1minus earth.
In addition, the grid of the described metal-oxide-semiconductor in the above technical scheme is connected to outside pwm control circuit.
As mentioned above, a kind of soft switch Boost topological circuit of the present invention, has following beneficial effect: the present invention is not increasing under the prerequisite of switching tube, only increases a pair of coupling inductance, two resonant capacitances and two diodes, has realized described switching tube Q 1zero current turning-on and no-voltage turn-off, improved the energy conversion efficiency of Boost topological circuit; Meanwhile, also realized output diode D 0zero-current switching, reduced the EMI of Boost topological circuit; In addition, described soft switch Boost topological circuit Jin Xu mono-road pwm control signal, control mode is simple.
Accompanying drawing explanation
Fig. 1 is shown as the principle schematic of a kind of soft switch Boost topological circuit of the present invention.
Fig. 2 is shown as a kind of soft switch Boost topological circuit of the present invention structure chart in one embodiment.
Fig. 3 A is shown as the 7 kind mode of operation schematic diagrames of a kind of soft switch Boost topological circuit described in Fig. 2 in a switch periods to scheming G.
Fig. 4 is shown the structure chart of a kind of soft switch Boost topological circuit of the present invention in another specific embodiment.
Fig. 5 A to Fig. 5 G is shown as the 7 kind mode of operation schematic diagrames of a kind of soft switch Boost topological circuit described in Fig. 4 in a switch periods.
Fig. 6 A and Fig. 6 B are shown as diode D described in described soft switch Boost topological circuit provided by the invention 0electric current and voltage experimental waveform figure.
Fig. 7 is shown as described soft switch Boost topological circuit provided by the invention and traditional hard switching Boost topological circuit energy conversion efficiency comparison diagram.
Drawing reference numeral explanation
Figure BDA0000418854430000031
Embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this specification below.
Notice, appended graphic the illustrated structure of this specification, ratio, size etc., equal contents in order to coordinate specification to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, show the principle schematic of a kind of soft switch Boost topological circuit of the present invention, described soft switch Boost topological circuit comprises a Boost booster circuit, this Boost booster circuit comprises input unit 2, boosting unit 3, switch element 4, resonant element 5 and output unit 6, described resonant element 5 is connected in described boosting unit 3, switch element 4 and output unit 6, described boosting unit 3 connects described input unit 2, described input unit 2 connects input voltage 1, described input voltage 1 is exported by described output unit 6 after described soft switch Boost topological circuit is processed.
Further, described input unit 2 comprises capacitor C in, described boosting unit 3 comprises inductance L 1, described switch element 4 comprises metal-oxide-semiconductor Q 1, described output unit 6 comprises diode D 0and capacitor C 0, described diode D 0anode is connected with described resonant element 5, described diode D 0negative electrode connects described capacitor C 0positive pole, described capacitor C 0minus earth, described capacitor C intwo ends connect the two ends of input voltage 1, simultaneously described capacitor C inpositive pole connect described inductance L 1one end, described inductance L 1the other end be connected to described metal-oxide-semiconductor Q 1drain electrode or described resonant element 5.
Be to be understood that, if delete described resonant element 5 in described soft switch Boost topological circuit, the combination of so remaining circuit is exactly a standard boost converter circuit in fact, if the described soft switch Boost topological circuit that therefore other similar boost converter circuits and described resonant element 5 combine also should be within interest field of the present invention.
For described resonant element 5, do to set forth further below, above those skilled in the art can be easier to understand or implement the present invention.
Embodiment mono-
Please refer to Fig. 2, show a kind of soft switch Boost topological circuit of the present invention structure chart in one embodiment, this circuit comprises capacitor C in, inductance L 1, metal-oxide-semiconductor Q 1, diode D 0and capacitor C 0, described diode D 0anode is connected with described resonant element 5, described diode D 0negative electrode connects described capacitor C 0positive pole, described capacitor C 0minus earth, described capacitor C intwo ends connect the two ends of input voltage 1, simultaneously described capacitor C inpositive pole connect described inductance L 1one end, described inductance L 1the other end be connected to described metal-oxide-semiconductor Q 1drain electrode; Wherein said resonant element 5 comprises coupling inductance L 2with L 3, capacitor C 1, capacitor C 2, diode D 1with diode D 2, described coupling inductance L 2different name end and described inductance L 1the described other end, described capacitor C 2positive pole and the drain electrode of described metal-oxide-semiconductor be connected, described coupling inductance L 2same Name of Ends and described diode D 1negative electrode, described capacitor C 1anodal and described diode D 0anode is connected, described capacitor C 2negative pole connect described diode D 1anode and described coupling inductance L 3different name end, described coupling inductance L 3same Name of Ends be connected to described diode D 2negative electrode, described diode D 2anode and described capacitor C 1minus earth.
Further, the above states soft switch Boost topological circuit seven kinds of mode of operations in a switch periods, please refer to Fig. 3 A to Fig. 3 G, show the 7 kind mode of operation schematic diagrames of a kind of soft switch Boost topological circuit described in Fig. 2 in a switch periods, its specific works pattern mode is:
Pattern 1: as shown in Figure 3A, described metal-oxide-semiconductor Q 1(be switching tube, hereinafter to be referred as switching tube Q 1) in off state, described diode D 0conducting, electric current is by described capacitor C inthe described inductance L of flowing through 1, L 2with described diode D 0to output capacitance C 0with load 7 resistance power supply, now described capacitor C 1on voltage be output voltage, described capacitor C 2there is initial voltage;
Pattern 2: as shown in Figure 3 B, described switching tube Q 1conducting, due to described inductance L 1, L 2existence, flow through described diode D 0electric current reduce gradually, flow through described switching tube Q 1electric current increase gradually, described switch Q 1realize ZCS soft open-minded, in this pattern, described coupling inductance L 3the voltage of upper induction is higher than described capacitor C 2on voltage, described diode D 2in cut-off state;
Mode 3: as shown in Figure 3 C, described switching tube Q 1continue conducting, described coupling inductance L 2on electric current reduce to zero, due to described capacitor C 1on voltage equal output voltage, described diode D 0realize soft shutoff, described capacitor C 1beginning is to described coupling inductance L 2resonant discharge, in this pattern, described coupling inductance L 3the voltage of upper induction is still higher than described capacitor C 2on voltage, described diode D 2in cut-off state, output capacitance C 0start independent of load 7 power supplies;
Pattern 4: as shown in Figure 3 D, described switching tube Q 1continue conducting, along with capacitor C 1on voltage constantly decline, described coupling inductance L 2the voltage at two ends constantly reduces, and then described coupling inductance L 3on induced voltage also constantly reduce, as described coupling inductance L 3on induced voltage and described capacitor C 2on voltage while equating, described diode D 2start conducting, described capacitor C 2beginning is to described coupling inductance L 3resonant discharge, now described capacitor C 1, C 2with described coupling inductance L 2, L 3form double resonance;
Pattern 5: as shown in Fig. 3 E, described switching tube Q 1continue conducting, when described capacitor C 2upper voltage drop is zero, described capacitor C 1on voltage also reduce to zero, described diode D 1conducting, with the described diode D of conducting before 2, described coupling inductance L 2, L 3form series connection continuous current circuit, so far, described capacitor C 1, C 2energy will all be converted to described coupling inductance L 2and L 3exciting current;
Pattern 6: as shown in Fig. 3 F, described switching tube Q 1turn-off, described magnetization energy will be by described coupling inductance L 2and L 3respectively to described capacitor C 1, C 2resonant discharge, due to described switching tube Q 1capacitor C described in during shutoff 1, C 2upper voltage is zero, flows through described switching tube Q in pattern 5 1electric current will all transfer to described capacitor C 1, C 2upper, described switching tube Q 1realize the soft shutoff of ZVS;
Mode 7: as shown in Fig. 3 G, described switching tube Q 1continue to turn-off, when described capacitor C 1on voltage equal output voltage, described diode D 0conducting, described capacitor C 1on voltage be output capacitor C 0be clamped on output voltage, in described coupling inductance, remaining magnetization energy will continue by described coupling inductance L 3to load 7 outputs, described coupling inductance L 3electric current reduce to after zero, circuit will enter pattern 1 again, repeat the course of work of above 7 patterns.
Pass through technique scheme, relative prior art, the present invention is not increasing under the prerequisite of switching tube, only increase a pair of coupling inductance, two resonant capacitances and two diodes, realize zero current turning-on and the no-voltage shutoff of switching tube, thereby improved the energy conversion efficiency of Boost topological circuit; Meanwhile, also realize the zero-current switching of output diode, reduced the EMI of Boost topological circuit; In addition, described soft switch Boost topological circuit Jin Xu mono-road pwm control signal, control mode is very simple.
Embodiment bis-
In addition, the present invention also provides another specific embodiment of described soft switch Boost topological circuit, please refer to Fig. 4, show the structure chart of a kind of soft switch Boost topological circuit of the present invention in another specific embodiment, with embodiment mono-difference be, in described resonant element 5, each element is slightly different from the annexation of other electronic components outside described resonant element 5, particularly: described resonant element 5 comprises coupling inductance L 2with L 3, capacitor C 1, capacitor C 2, diode D 1with diode D 2, described coupling inductance L 2different name end and described capacitor C 2the drain electrode of positive pole, described metal-oxide-semiconductor connect, described coupling inductance L 2same Name of Ends and described inductance L 1the described other end, described diode D 1negative electrode, described capacitor C 1anodal and described diode D 0anode be connected, described capacitor C 2negative pole connect described diode D 1anode and described coupling inductance L 3different name end, described coupling inductance L 3same Name of Ends be connected to described diode D 2negative electrode, described diode D 2anode and described capacitor C 1minus earth.In addition, the annexation of other elements is a kind of identical with embodiment, therefore repeat no more.
Further, described in above embodiment bis-, soft switch Boost topological circuit has seven kinds of mode of operations in a switch periods, please refer to Fig. 5 A to Fig. 5 G, show the 7 kind mode of operation schematic diagrames of soft switch Boost topological circuit described in Fig. 4 in a switch periods, its specific works pattern mode is:
Pattern 1: as shown in Figure 5A, described metal-oxide-semiconductor Q 1in off state, described diode D 0conducting, electric current is by capacitor C inthe inductance L of flowing through 1with described diode D 0to output capacitance C 0with load 7 power supply, now capacitor C 1on voltage be output voltage, capacitor C 2there is initial voltage;
Pattern 2: as shown in Figure 5 B, described switching tube Q 1conducting, due to described inductance L 1, L 2existence, flow through described diode D 0electric current reduce gradually, flow through described switching tube Q 1electric current increase gradually, described switching tube Q 1realize ZCS(Zero Current Switch: Zero Current Switch) soft open-minded, in this pattern, the voltage of the upper induction of described coupling inductance L3 is higher than described capacitor C 2on voltage, described diode D 2in cut-off state;
Mode 3: as shown in Figure 5 C, described switching tube Q 1continue conducting, described coupling inductance L 2on electric current equal to flow through described inductance L 1on electric current, due to described capacitor C 1on voltage equal output voltage, described diode D 0realize soft shutoff, described capacitor C 1beginning is to described coupling inductance L 2resonant discharge, in this pattern, described coupling inductance L 3the voltage of upper induction is still higher than described capacitor C 2on voltage, described diode D 2in cut-off state, output capacitance C 0start independent of load 7 power supplies;
Pattern 4: as shown in Figure 5 D, described switching tube Q 1continue conducting, along with capacitor C 1on voltage constantly decline, described coupling inductance L 2the voltage at two ends constantly reduces, and then described coupling inductance L 3on induced voltage also constantly reduce, as described coupling inductance L 3on induced voltage and described capacitor C 2on voltage while equating, described diode D 2start conducting, described capacitor C 2beginning is to described coupling inductance L 3resonant discharge, now described capacitor C 1, C 2with described coupling inductance L 2, L 3form double resonance;
Pattern 5: as shown in Fig. 5 E, described switching tube Q 1continue conducting, when described capacitor C 2upper voltage drop is zero, described capacitor C 1on voltage also reduce to zero, described diode D 1conducting, with the described diode D of conducting before 2, described coupling inductance L 2, L 3form series connection continuous current circuit, so far, described capacitor C 1, C 2energy will all be converted to described coupling inductance L 2and L 3exciting current;
Pattern 6: as shown in Fig. 5 F, described switching tube Q 1turn-off, described magnetization energy will be by described coupling inductance L 2and L 3respectively to described capacitor C 1, C 2resonant discharge, due to described switching tube Q 1capacitor C described in during shutoff 1, C 2upper voltage is zero, flows through described switching tube Q in pattern described in the present embodiment 5 1electric current will all transfer to described capacitor C 1, C 2upper, described switching tube Q 1realize the soft shutoff of ZVS;
Mode 7: as shown in Fig. 5 G, described switching tube Q 1continue to turn-off, when described capacitor C 1on voltage equal output voltage, described diode D 0conducting, described capacitor C 1on voltage be output capacitor C 0be clamped on output voltage, in described coupling inductance, remaining magnetization energy will continue by described coupling inductance L 3to load 7 outputs.
It should be noted that, described in the technical scheme described in above two embodiment, the grid of metal-oxide-semiconductor is connected to outside pwm control circuit (do not give and illustrating in figure).
In addition, for technique effect of the present invention is described, please refer to Fig. 6 A and Fig. 6 B, show diode D described in described soft switch Boost topological circuit provided by the invention 0electric current and voltage experimental waveform figure, as can be seen from the figure, output diode D 0there is no reverse reverting electric current, therefore reduced electromagnetic interference.Simultaneously, please refer to Fig. 7, show described soft switch Boost topological circuit provided by the invention and traditional hard switching Boost topological circuit energy conversion efficiency comparison diagram, as can be seen from the figure described soft switch Boost topological circuit energy conversion efficiency is significantly improved.
In sum, the present invention is not increasing under the prerequisite of switching tube, only increases a pair of coupling inductance, two resonant capacitances and two diodes, has realized described switching tube Q 1zero current turning-on and no-voltage turn-off, improved the energy conversion efficiency of Boost topological circuit; Meanwhile, also realized output diode D 0zero-current switching, reduced the EMI of Boost topological circuit; In addition, described soft switch Boost topological circuit Jin Xu mono-road pwm control signal, control mode is simple.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.

Claims (5)

1. a soft switch Boost topological circuit, is characterized in that, comprising:
Boost booster circuit, comprise connect external input voltage input unit, connect described input unit boosting unit, connect the switch element of described boosting unit and the output unit that described input voltage is exported after described soft switch Boost topological circuit is processed;
Resonant element, described resonant element is connected in described boosting unit, switch element and output unit, for realizing zero current turning-on and the no-voltage of described switch element, turn-offs.
2. soft switch Boost topological circuit according to claim 1, is characterized in that: described input unit comprises capacitor C in, described boosting unit comprises inductance L 1, described switch element comprises metal-oxide-semiconductor Q 1, described output unit comprises diode D 0and capacitor C 0, described diode D 0anode is connected with described resonant element, described diode D 0negative electrode connects described capacitor C 0positive pole, described capacitor C 0minus earth, described capacitor C intwo ends connect the two ends of input voltage, simultaneously described capacitor C inpositive pole connect described inductance L 1one end, described inductance L 1the other end be connected to described metal-oxide-semiconductor Q 1drain electrode or described resonant element.
3. soft switch Boost topological circuit according to claim 2, is characterized in that: described resonant element comprises coupling inductance L 2with L 3, capacitor C 1, capacitor C 2, diode D 1with diode D 2, described coupling inductance L 2different name end and described inductance L 1the described other end, described capacitor C 2positive pole and the drain electrode of described metal-oxide-semiconductor be connected, described coupling inductance L 2same Name of Ends and described diode D 1negative electrode, described capacitor C 1anodal and described diode D 0anode is connected, described capacitor C 2negative pole connect described diode D 1anode and described coupling inductance L 3different name end, described coupling inductance L 3same Name of Ends be connected to described diode D 2negative electrode, described diode D 2anode and described capacitor C 1minus earth.
4. soft switch Boost topological circuit according to claim 2, is characterized in that: described resonant element comprises coupling inductance L 2with L 3, capacitor C 1, capacitor C 2, diode D 1with diode D 2, described coupling inductance L 2different name end and described capacitor C 2the drain electrode of positive pole, described metal-oxide-semiconductor connect, described coupling inductance L 2same Name of Ends and described inductance L 1the described other end, described diode D 1negative electrode, described capacitor C 1anodal and described diode D 0anode be connected, described capacitor C 2negative pole connect described diode D 1anode and described coupling inductance L 3different name end, described coupling inductance L 3same Name of Ends be connected to described diode D 2negative electrode, described diode D 2anode and described capacitor C 1minus earth.
5. according to the soft switch Boost topological circuit described in any one in claim 1 to 4, it is characterized in that: the grid of described metal-oxide-semiconductor is connected to outside pwm control circuit.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944383A (en) * 2014-04-14 2014-07-23 深圳市航嘉驰源电气股份有限公司 Boost converter
WO2016161746A1 (en) * 2015-04-09 2016-10-13 京东方科技集团股份有限公司 Power supply circuit and power supply method
CN108390567A (en) * 2018-04-04 2018-08-10 广州金升阳科技有限公司 A kind of zero voltage switch synchronous rectification Boost circuit, zero voltage switch Boost circuit and its control method
CN110572030A (en) * 2019-10-15 2019-12-13 无锡威孚高科技集团股份有限公司 Soft switch direct current converter based on coupling inductance
CN113541476A (en) * 2021-07-19 2021-10-22 北京信息科技大学 Symmetric double-Boost circuit based on soft switch and implementation method

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JP2004072893A (en) * 2002-08-06 2004-03-04 Fuji Electric Holdings Co Ltd Boosting chopper circuit
US20110057639A1 (en) * 2009-09-09 2011-03-10 City University Of Hong Kong Passive lossless snubber cell for a power converter
CN201985757U (en) * 2011-03-04 2011-09-21 浙江大学 Boost converter of voltage doubling unit of built-in transformer and switched capacitor

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Publication number Priority date Publication date Assignee Title
CN1219299A (en) * 1997-02-10 1999-06-09 Tdk株式会社 Step-up switching power supply
JP2004072893A (en) * 2002-08-06 2004-03-04 Fuji Electric Holdings Co Ltd Boosting chopper circuit
US20110057639A1 (en) * 2009-09-09 2011-03-10 City University Of Hong Kong Passive lossless snubber cell for a power converter
CN201985757U (en) * 2011-03-04 2011-09-21 浙江大学 Boost converter of voltage doubling unit of built-in transformer and switched capacitor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944383A (en) * 2014-04-14 2014-07-23 深圳市航嘉驰源电气股份有限公司 Boost converter
WO2016161746A1 (en) * 2015-04-09 2016-10-13 京东方科技集团股份有限公司 Power supply circuit and power supply method
US9859734B2 (en) 2015-04-09 2018-01-02 Boe Technology Group Co., Ltd. Power supply circuit and power supply method
CN108390567A (en) * 2018-04-04 2018-08-10 广州金升阳科技有限公司 A kind of zero voltage switch synchronous rectification Boost circuit, zero voltage switch Boost circuit and its control method
CN108390567B (en) * 2018-04-04 2020-07-17 广州金升阳科技有限公司 Zero-voltage switch Boost circuit and control method thereof
CN110572030A (en) * 2019-10-15 2019-12-13 无锡威孚高科技集团股份有限公司 Soft switch direct current converter based on coupling inductance
CN113541476A (en) * 2021-07-19 2021-10-22 北京信息科技大学 Symmetric double-Boost circuit based on soft switch and implementation method

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