CN105871202A - Single-tube buck-boost soft switching device - Google Patents
Single-tube buck-boost soft switching device Download PDFInfo
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- CN105871202A CN105871202A CN201610450800.2A CN201610450800A CN105871202A CN 105871202 A CN105871202 A CN 105871202A CN 201610450800 A CN201610450800 A CN 201610450800A CN 105871202 A CN105871202 A CN 105871202A
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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
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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
- 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)
- Inverter Devices (AREA)
Abstract
The invention relates to a single-tube buck-boost soft switching device. A BUCK-BOOST used by the invention comprises an input direct-current power supply (VDC1), a first power switching tube (M1), a first power diode (D1), a second power diode (D2), a third power diode (D3), a first inductor (L1), a first capacitor (C1), a third capacitor (C3) and a load (R1); a source electrode of a second power switching tube (M2) is connected with a newly added resonant inductor (C2) and a drain electrode of the second power switching tube (M2) is connected with a negative electrode of the input direct-current power supply (VDC1); the other end of the resonant inductor (C2) is connected with a newly added resonant capacitor (L2); and the resonant capacitor (L2) is also connected with a positive electrode of the first power switching tube (M1). The defects that voltage and current of a previous hard switch are not zero and are overlapped, the switching loss is relatively great, peaks of the voltage and the current are relatively great, and electromagnetic interferences are relatively serious and the like are overcome. By additionally arranging one resonant inductor and one resonant capacitor, the defects are solved, the switching loss is reduced and noises are lowered; and the single-tube buck-boost soft switching device has the advantages of low cost, high performance and high power density, and energy sources are saved.
Description
Technical field
The invention belongs to field of power electronics, be specifically related to a kind of single tube buck-boost soft switch device.
Background technology
Before making the present invention, hard switching Buck-boost changer conventional in society is along with the raising of switching frequency, and voltage in switching process, electric current is all not zero, and occurs in that overlap, and switching loss is bigger.Simultaneously as the voltage that power switch switches and produces is the biggest with current spike, electromagnetic interference ratio is more serious.Even if more optimizing a little circuit switching losses when high-frequency work then using power tube snubber circuit or soft-switch PWM to control also can substantially reduce, decrease the harm that Voltage and Current Spikes is brought simultaneously, but the passive and nondestructive snubber circuit being attached on power tube is when input or load change, it is difficult to ensure that its assimilation effect, efficiency is difficult to improve further.In the circuit that some soft-switch PWM controls, also exist main power tube can realize Sofe Switch work and auxiliary power pipe can not be fully achieved Sofe Switch work situation, make circuit efficiency improve be affected.At present, single tube BUCK-BOOST soft switch topology is little, needs the BUCK-BOOST soft switch topology structure that development efficiency is high, performance is good.
Summary of the invention
The object of the invention is that and overcomes drawbacks described above, a kind of single tube BUCK-BOOST soft switch device of invention.
The technical scheme is that
nullA kind of single tube BUCK-BOOST soft switch device，BUCK-BOOST comprises device input DC power (VDC1)、First power switch pipe (M1)、First power diode (D1)、Second power diode (D2)、3rd power diode (D3)、First inductance (L1)、First electric capacity (C1)、3rd electric capacity (C3) and load (R1)，It is characterized in that: increase by second power switch pipe (M2)，Its source electrode is connected with a newly-increased resonant inductance (C2)，Its drain electrode links together with input DC power (VDC1) negative pole，Resonant inductance (C2) other end is connected with newly-increased resonant capacitance (L2) one end，The other end of resonant capacitance (L2) then anode with the first power switch pipe (M1) is connected，Whole circuit is by the connection of pwm converter mode，Resonance is introduced before and after switching process.
The positive pole of described DC source (VDC1) is simultaneously connected to the drain electrode of the first power switch pipe (M1), the first power diode (D1) negative electrode and one end of the 3rd electric capacity (C3)；The source electrode of the first power switch pipe (M1) is simultaneously connected to the anode of the first power diode (D1), the other end of the 3rd electric capacity (C3), one end of the second inductance (L2), one end of the first inductance (L1), the negative electrode of the 3rd diode (D3)；The other end of the second inductance (L2) is connected to one end of the second electric capacity (C2), and the other end of the second electric capacity (C2) is simultaneously connected to source electrode and the anode of the second diode (D2) of the second power switch pipe (M2)；The negative electrode of the second diode (D2), the drain electrode of the second power switch pipe (M2) link together with input DC power (VDC1) negative pole；The other end of the first inductance (L1) is connected to the negative pole of input DC power (VDC1)；The anode of the 3rd diode (D3) is simultaneously connected to negative terminal and one end of load (R1) of the first electric capacity (C1), and the anode of the first electric capacity (C1) is simultaneously connected to the negative pole of input DC power (VDC1) with the other end loading (R1)；The negative pole of input DC power and the positive pole of output are same current potentials.
Described the first power switch pipe (M1) and the second power switch pipe (M2) periodically connecting and disconnecting, second power switch pipe (M2) turns on prior to the first power switch pipe (M1), second power switch pipe (M2) ON time is fixing, and the regulating time of PWM is determined by the first power switch pipe (M1) ON time.
The 3rd described electric capacity (C3) it is the first described power switch pipe (M1) parasitic capacitance.
The first described diode (D1) it is the first described power switch pipe (M1) anti-and diode or body diode.
The second described diode (D2) can be the second described power switch pipe (M2) anti-and diode or body diode.
Described first inductance (L1) inductance value than the second inductance (L2) much bigger；First electric capacity (C1) capacitance than the second electric capacity (C2) and the 3rd electric capacity (C3) much bigger.
Advantages of the present invention and effect are by increasing a resonant inductance and resonant capacitance, resonance is introduced before and after switching process, just can eliminate electric current and the overlap of voltage in switching process, reduce their rate of change, thus it is greatly reduced switching loss, meanwhile, resonant process also limit the voltage in switching process, the rate of change of electric current, makes switching noise also be substantially reduced.Two power switch pipes work completely under Sofe Switch state；All power diodes turn off the most naturally, it is possible to decrease the requirement to power diode reverse recovery time；Compared with hard switching circuit, only need to increase little device, just can obtain the biggest raising in performance, form the BUCK-BOOST soft switch topology structure that development efficiency is high, performance is good.Owing to having the advantage of low cost, high-performance, high power density, DC converting part, batter-charghing system and related application occasion at photovoltaic generating system play bigger effect.This is a kind of device saving the energy, meets the demand for development of the energy-saving and emission-reduction of country's promotion, thus, also comply with the market demand, in generation of electricity by new energy, battery charging system and association area, there is the biggest market prospect, preferable market economy benefit can be brought.
Accompanying drawing explanation
Total topology schematic diagram of Fig. 1 present invention.
The waveform diagram of Fig. 2 present invention.
BUCK-BOOST topological mode 1 operating diagram in Fig. 3 present invention.
BUCK-BOOST topological mode 2 operating diagram in Fig. 4 present invention.
BUCK-BOOST topological mode 3 operating diagram in Fig. 5 present invention.
BUCK-BOOST topological mode 4 operating diagram in Fig. 6 present invention.
BUCK-BOOST topological mode 5 operating diagram in Fig. 7 present invention.
BUCK-BOOST topological mode 6 operating diagram in Fig. 8 present invention.
BUCK-BOOST topological mode 7 operating diagram in Fig. 9 present invention.
BUCK-BOOST topological mode 8 operating diagram in Figure 10 present invention.
Specific implementation method:
For present disclosure and feature are expanded on further, below in conjunction with accompanying drawing, specific embodiments of the present invention are specifically described.
The technical thought of the present invention is:
Including input DC power (VDC1), the first power switch pipe (M1), the second power switch pipe (M2), the first power diode (D1), the second power diode (D2), the 3rd power diode (D3), the first inductance (L1), the second inductance (L2), the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3) and load (R1) the Novel single tube BUCK-BOOST soft switch power circuit that constitutes.
As shown in Figure 1:
The present invention includes: DC source (VDC1), the first power switch pipe (M1), the second power switch pipe (M2), the first power diode (D1), the second power diode (D2), the 3rd power diode (D3), the first inductance (L1), the second inductance (L2), the first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3) and load (R1) the novel B UCK-BOOST soft switch power circuit that constitutes.
nullBUCK-BOOST comprises device input DC power (VDC1)、First power switch pipe (M1)、First power diode (D1)、Second power diode (D2)、3rd power diode (D3)、First inductance (L1)、First electric capacity (C1)、3rd electric capacity (C3) and load (R1)，It is characterized in that: increase by second power switch pipe (M2)，Its source electrode is connected with a newly-increased resonant inductance (C2)，Its drain electrode links together with input DC power (VDC1) negative pole，Resonant inductance (C2) other end is connected with newly-increased resonant capacitance (L2) one end，The other end of resonant capacitance (L2) then anode with the first power switch pipe (M1) is connected，Whole circuit is by the connection of pwm converter mode，Resonance is introduced before and after switching process.
DC source (VDC1) positive pole be simultaneously connected to the first power switch pipe (M1) drain electrode, the first power diode (D1) negative electrode and the 3rd electric capacity (C3) one end；First power switch pipe (M1) source electrode be simultaneously connected to the first power diode (D1) anode, the 3rd electric capacity (C3) the other end, the second inductance (L2) one end, the first inductance (L1) one end, the 3rd diode (D3) negative electrode；Second inductance (L2) the other end be connected to the second electric capacity (C2) one end, the second electric capacity (C2) the other end be simultaneously connected to the second power switch pipe (M2) source electrode and the second diode (D2) anode；Second diode (D2) negative electrode, drain electrode and the input DC power (VDC of the second power switch pipe (M2)1) negative pole links together；First inductance (L1) the other end be connected to input DC power (VDC1) negative pole；3rd diode (D3) anode be simultaneously connected to the first electric capacity (C1) negative terminal and load (R1) one end, the first electric capacity (C1) anode with load (R1) the other end be simultaneously connected to input DC power (VDC1) negative pole；The negative pole of input DC power and the positive pole of output are same current potentials.
In described changer, input DC power (VDC1) positive pole be simultaneously connected to the first power switch pipe (M1) drain electrode, the first power diode (D1) negative electrode and the 3rd electric capacity (C3) one end；First power switch pipe (M1) source electrode be simultaneously connected to the first power diode (D1) anode, the 3rd electric capacity (C3) the other end, the second inductance (L2) one end, the first inductance (L1) one end, the 3rd diode (D3) negative electrode；Second inductance (L2) the other end be connected to the second electric capacity (C2) one end, the second electric capacity (C2) the other end be simultaneously connected to the second power switch pipe (M2) source electrode and the second diode (D2) anode；Second diode (D2) negative electrode, the second power switch pipe (M2) drain electrode and input DC power (VDC1) negative pole links together；First inductance (L1) the other end be connected to input DC power (VDC1) negative pole；3rd diode (D3) anode be simultaneously connected to the first electric capacity (C1) negative terminal and load (R1) one end, the first electric capacity (C1) anode with load (R1) the other end be simultaneously connected to input DC power (VDC1) negative pole；The negative pole of input DC power and the positive pole of output are same current potentials.
At work, the second power switch pipe (M2) prior to the first power switch pipe (M1) conducting.As the second power switch pipe (M2) conducting time, the second inductance (L2) and the second electric capacity (C2) there is resonance, the second inductance (L2Electric current in) is started from scratch increase, it is seen that the second power switch pipe (M2) it is zero current turning-on, the second electric capacity (C simultaneously2Voltage in) can decline, as the second inductance (L2When in), electric current increases from zero to the value of the first inductive current, the 3rd power diode (D3) naturally turn off.3rd power diode (D3) close and have no progeny, the 3rd electric capacity (C3) and the second inductance (L2) and the second electric capacity (C2) there is resonance, the 3rd electric capacity (C3When in), voltage resonance discharges into zero, the first power diode (D1) begin to turn on, the first power switch pipe (M1) drain-source both end voltage is clamped at zero, now opens the first power switch pipe (M1) it is that no-voltage is open-minded.Then, the second inductance (L2) and the second electric capacity (C2) continue resonance, the electric current of the second inductance and the voltage direction of the second electric capacity all change so that resonance current is through the second power diode (D2) circulation, due to the second power diode (D2) conducting, the second power switch pipe (M2) drain-source both end voltage is clamped at zero, now turns off the second power switch pipe (M2) it is zero voltage turn-off.At the end of resonance, the second power diode (D2) naturally turn off, circuit sets up PWM working method.At the first power switch pipe (M1) turn off time, due to the 3rd electric capacity (C3) both end voltage be zero so that the first power switch pipe (M1) it is zero voltage turn-off.
Below with the main circuit structure shown in Fig. 1 Fig. 2 and work wave, describe the specific works principle of the present invention in conjunction with Fig. 3 to Figure 10.
In the equivalent circuit of Fig. 3 to Figure 10, due to the first inductance L1With the first electric capacity C1Relatively big, when analyzing resonant type soft-switch process, it is believed that in switch periods, L1Middle electric current is held essentially constant, and uses equivalent current source IL1Represent；C1Middle voltage is held essentially constant, and uses equivalent voltage source V0Represent.
At t0First power switch pipe M before1With the second power switch pipe M2It is turned off, the 3rd power diode D3Conducting, equivalent circuit is as shown in Figure 10.
Fig. 3 represents at t0--t1The equivalent circuit of period, at t0Moment the second power switch M2Switched on, L2With C2There is resonance, L2Middle electric current is started from scratch increase, and C2Middle voltage begins to decline.Work as L2Middle electric current increases to IL1Time, D3Naturally turn off, it is seen that M2Belong to zero current turning-on.
Fig. 4 represents at t1-t2The equivalent circuit of period, at t1Moment, D3Have no progeny in pass, L2, C3And C2Between occur resonance, C3And C2To L2Electric discharge, L2Middle electric current increases further, input current i1Reversely, C is worked as3When middle tension discharge is to zero, D1Begin to turn on.
Fig. 5 represents at t2-t3The equivalent circuit of period, D1After conducting, L2、C2Continue resonance, C2On energy continue to transfer to L2In, at t3Moment L2Middle electric current reaches maximum, and C2Middle voltage is zero.During this period of time, due to D1Conducting makes the first power switch pipe M1Both end voltage is zero.So opening M in this stage1, M1Open-minded for no-voltage, i1Continue to flow through reverse current.
Fig. 6 represents at t3-t4The equivalent circuit of period, in this stage, L2、C2Continue resonance, L2Middle energy starts to pass to C2, C2Both end voltage reversing, works as L2Middle electric current reaches IL1Time, D1Naturally turn off, power tube M1Begin to flow through electric current, i1Forward rises.At t4Moment, L2Middle electric current is zero, C2Two ends backward voltage is maximum.
Fig. 7 represents at t4-t5The equivalent circuit of period, in this stage, L2、C2Continue resonance, L2Middle electric current starts reversely and passes through D2Circulation.C2Middle voltage is maximum by reverse maximum resonance to forward, due to D2Conducting, M2Both end voltage is zero.If turning off M within this stage2, M2For zero voltage turn-off.To t5In the moment, resonance terminates, D2Naturally turn off.
Fig. 8 represents at t5-t6The equivalent circuit of period, circuit sets up PWM working method.
Fig. 9 represents at t6-t7The equivalent circuit of period, at t6Moment turns off M1, because of electric capacity C3Effect, M1For zero voltage turn-off.Meanwhile, VDC1To C3Constant-current charge, C3Power on to press and be raised to the initial value that this working cycle starts, i1Drop to zero therewith.
Figure 10 represents at t7-t8The equivalent circuit of period, at t7Moment, C3Charge complete, D simultaneously3Conducting, circuit rebuilds again PWM working method.So far a switch periods terminates.
Claims (7)
1. a single tube BUCK-BOOST soft switch device, BUCK-BOOST comprises device input DC power
(VDC1), the first power switch pipe (M1), the first power diode (D1), the second power diode (D2),
3rd power diode (D3), the first inductance (L1), the first electric capacity (C1), the 3rd electric capacity (C3) and load (R1),
It is characterized in that: increase by second power switch pipe (M2), its source electrode and a newly-increased resonant inductance (C2)
Being connected, its drain electrode links together with input DC power (VDC1) negative pole, resonant inductance (C2) other end
Be connected with newly-increased resonant capacitance (L2) one end, the other end of resonant capacitance (L2) then with the first power
The anode of switching tube (M1) is connected, and whole circuit is by the connection of pwm converter mode, in switching process
Front and back introduce resonance.
A kind of single tube BUCK-BOOST soft switch device the most according to claim 1, it is characterised in that: direct current
The positive pole of power supply is simultaneously connected to the drain electrode of the first power switch pipe, the first power diode (D1) negative electrode and the 3rd
One end of electric capacity (C3)；The source electrode of the first power switch pipe (M1) is simultaneously connected to the first power diode (D1)
Anode, the other end of the 3rd electric capacity (C3), one end of the second inductance (L2), one end of the first inductance (L1),
The negative electrode of the 3rd diode (D3)；The other end of the second inductance (L2) is connected to one end of the second electric capacity (C2), the
The other end of two electric capacity (C2) is simultaneously connected to source electrode and second diode (D2) of the second power switch pipe (M2)
Anode；The negative electrode of the second diode (D2), the drain electrode of the second power switch pipe (M2) and input DC power
(VDC1) negative pole links together；The other end of the first inductance (L1) is connected to the negative of input DC power (VDC1)
Pole；The anode of the 3rd diode (D3) is simultaneously connected to negative terminal and one end of load (R1) of the first electric capacity (C1),
The anode of the first electric capacity (C1) is simultaneously connected to the negative of input DC power (VDC1) with the other end of load (R1)
Pole；The negative pole of input DC power and the positive pole of output are same current potentials.
A kind of single tube BUCK-BOOST soft switch device the most according to claim 2, it is characterised in that: described
The first power switch pipe (M1) and the second power switch pipe (M2) periodically connecting and disconnecting, the second power
Switching tube (M2) turns on prior to the first power switch pipe (M1), the second power switch pipe (M2) ON time
Being fixing, the regulating time of PWM is determined by the first power switch pipe (M1) ON time.
A kind of single tube BUCK-BOOST soft switch device the most according to claim 2, it is characterised in that: institute
The 3rd electric capacity (C stated3) it is the first described power switch pipe (M1) parasitic capacitance.
A kind of BUCK-BOOST soft-switching process the most according to claim 2, it is characterised in that: described
First diode (D1) it is the first power switch pipe (M1) anti-and diode or body diode.
A kind of single tube BUCK-BOOST soft switch device the most according to claim 2, it is characterised in that: institute
The the second diode (D stated2) it is the second power switch pipe (M2) anti-and diode or body two
Pole is managed.
A kind of single tube BUCK-BOOST soft switch device the most according to claim 2, it is characterised in that: the
One inductance (L1) inductance value than the second inductance (L2) much bigger；First electric capacity (C1) capacitance than
Two electric capacity (C2) and the 3rd electric capacity (C3) much bigger.
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| CN201610450800.2A CN105871202B (en) | 2016-06-17 | 2016-06-17 | A kind of single tube buck-boost soft switch device |
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| CN201610450800.2A CN105871202B (en) | 2016-06-17 | 2016-06-17 | A kind of single tube buck-boost soft switch device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493638A (en) * | 2017-09-25 | 2017-12-19 | 江苏大学 | Based on BOOST BUCK Converter Interleaving Parallel no electrolytic capacitor LED drive powers and switching method |
| EP3796534A4 (en) * | 2018-06-05 | 2021-06-30 | Huawei Technologies Co., Ltd. | Power converter and related system |
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| CN107493638A (en) * | 2017-09-25 | 2017-12-19 | 江苏大学 | Based on BOOST BUCK Converter Interleaving Parallel no electrolytic capacitor LED drive powers and switching method |
| CN107493638B (en) * | 2017-09-25 | 2019-10-01 | 江苏大学 | Based on BOOST-BUCK Converter Interleaving Parallel no electrolytic capacitor LED drive power and switching method |
| EP3796534A4 (en) * | 2018-06-05 | 2021-06-30 | Huawei Technologies Co., Ltd. | Power converter and related system |
| US11437904B2 (en) | 2018-06-05 | 2022-09-06 | Huawei Digital Power Technologies Co., Ltd. | Power converter and related system |
| US11784552B2 (en) | 2018-06-05 | 2023-10-10 | Huawei Digital Power Technologies Co., Ltd. | Power converter and related system |
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| CN105871202B (en) | 2019-03-01 |
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