CN209375473U - A kind of circuit of reversed excitation - Google Patents
A kind of circuit of reversed excitation Download PDFInfo
- Publication number
- CN209375473U CN209375473U CN201920211637.3U CN201920211637U CN209375473U CN 209375473 U CN209375473 U CN 209375473U CN 201920211637 U CN201920211637 U CN 201920211637U CN 209375473 U CN209375473 U CN 209375473U
- Authority
- CN
- China
- Prior art keywords
- circuit
- armature winding
- winding unit
- switching tube
- main switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a kind of circuit of reversed excitation, it include: input circuit, input circuit includes the armature winding unit and pressure unit of at least two-stage, every grade of armature winding unit is by identical armature winding, absorbing circuit, control the main switch composition of the armature winding on-off, wherein at least have in the armature winding unit of level-one and replaces with absorbing circuit by chokes diode, the clamp circuit of clamp capacitor and auxiliary switch composition, the clamp circuit is controlled by auxiliary switch, most of primary side leakage inductance is absorbed using clamp capacitor, it simultaneously can be by all winding energy chokes of entire transformer using chokes diode, so as to this stage realize all circuit primary sides respectively connect main switch no-voltage conducting.The switching loss that main switch can integrally be reduced, improves the switching frequency of circuit topology.This clamp circuit is able to achieve auxiliary switch control complementary with master power switch pipe simultaneously, and control method is simple, and is able to achieve the ZVS of clamping switch tube, has preferable circuit performance.
Description
Technical field
The utility model relates to a kind of high input voltage circuit of reversed excitation, in particular to a kind of master power switch pipe realizes Sofe Switch
Series connection circuit of reversed excitation.
Background technique
In recent years, with the rapid development of the power industries such as photovoltaic power generation, EHV transmission, the input electricity of distribution system
Pressure is very high, and up to several kilovolts, existing conventional converter is difficult have suitable injectron to meet design requirement, for solution
The certainly excessively high problem of switch tube voltage stress can input concatenated circuit structure using converter.
Fig. 1 is the well known high voltage eclipsed form flyback DC-DC converter circuit structure with automatically equalizing voltage function of one kind,
The circuit structure is published in " design of high voltage eclipsed form flyback DC-DC converter " of " electrotechnics magazine " the 5th phase in 2001.
Series-transformer type circuit of reversed excitation is divided by windings in series, and transformer is divided into the form of multiple windings in series,
Reduce the drain-source voltage stress of single switch power tube, to realize the function of wide-range high-voltage input.For common string
Joining transformer type circuit of reversed excitation, drain-source voltage is not zero when due to power switch tube conducting, there are the high problem of turn-on consumption,
Switching frequency improving performance is affected, while being difficult to reduce volume, power density is difficult to be promoted.If circuit switch pipe is able to achieve soft
Switching function (Sofe Switch: by introducing resonance before and after switching process, makes voltage before opening first drop to zero, electricity before turning off
Stream first drops to zero, so that it may which the overlapping for eliminating voltage in switching process, electric current reduces their change rate, to greatly reduce
It even is eliminated switching loss；Zero voltage switch is known as ZVS, ZVS:Zero Voltage Switching；Zero Current Switch is known as:
ZCS, ZCS:Zero Current Switching), then it can be very good the performance for promoting tandem type circuit of reversed excitation various aspects.
Utility model content
In view of this, the utility model is to overcome the shortcomings of existing methods the technical issues of solution, propose that a kind of series connection is anti-
Excitation circuit scheme realize all master power switch pipes can while absorbing most of primary winding leakage inductance
ZVS, to reduce the switching loss of high-pressure series circuit of reversed excitation, the control method of Simultaneous Switching pipe is relatively simple.
The mode that series connection circuit of reversed excitation absorbs primary side leakage inductance at present mainly uses RCD absorbing circuit, and RCD absorbing circuit scheme is only
Power switch tube drain-source voltage spike can be reduced by absorbing leakage inductance energy, fail to reduce the multiple power switch tubes of primary side
Switching loss.In the case where high input voltage, the switching loss of power tube is larger and easily makes switching tube fever serious.This is practical new
The central scope of type is: wherein will be changed to a clamp circuit, this clamp circuit by the one of absorption circuit of primary side winding unit
It is controlled by a clamping switch tube, (between primary side Multiple coil in the preferable situation of the degree of coupling) absorbs most of primary side using clamp capacitor
Leakage inductance, while can be by all winding energy chokes of entire transformer, when clamping switch tube turns off using a chokes diode
When, chokes diode voltage is reversed, and chokes stop, and the multiple armature windings of transformer will reversely take the knot electricity of corresponding main switch away
Hold voltage, thus for that can realize that the ZVS of all series power switch pipes provides condition in this stage.This clamp circuit can be real simultaneously
Existing clamping switch tube control complementary with master power switch pipe, control method is simple, and is able to achieve the ZVS of clamping switch tube, tool
There is preferable circuit performance.Based on the design, the technical solution adopted in the utility model are as follows:
A kind of circuit of reversed excitation, comprising: input circuit, input circuit includes the armature winding unit of at least two-stage and pressure is single
Member, every grade of armature winding unit is in parallel with pressure unit, and armature winding unit at different levels is serially connected, pressure unit at different levels
It is serially connected；Chopped-off head armature winding unit input terminal connection DC voltage positive voltage terminal, final stage armature winding unit it is defeated
Outlet ground connection；Every grade of armature winding unit includes armature winding, main switch and absorbing circuit, one end conduct of armature winding
The conducting electric current of the input terminal of armature winding unit, the other end connection main switch of armature winding flows into end, main switch
Conducting electric current outflow end connects the input terminal of next stage armature winding unit, and absorbing circuit is connected in parallel on the both ends of armature winding；Respectively
The control terminal of grade main switch applies synchronous driving signal, and armature windings at different levels are the same as phase control and total magnetic core.
Absorbing circuit at least in level-one armature winding unit replaces with a clamp circuit, which passes through absorption
Each armature winding leakage inductance energy realizes Sofe Switch function (ZVS) to control the main switch of armature winding units at different levels.
Preferably, the absorbing circuit in the final stage armature winding unit replaces with a clamp circuit.
Preferably, the clamp circuit includes a capacitor, a diode, a switching tube；Work as grade where the connection of capacitor one end
Input terminal, the diode anode of armature winding unit, the capacitor other end connects diode cathode, switching tube conducting electric current flows into
The conducting electric current at end, the main switch where the connection of switching tube conducting electric current outflow end when grade armature winding unit flows into end, opens
The control terminal for closing pipe applies driving signal.
Preferably, the switching tube is metal-oxide-semiconductor, and the conducting electric current input terminal of switching tube is the drain electrode of metal-oxide-semiconductor, switching tube
Conducting electric current output end, be metal-oxide-semiconductor source electrode, the control terminal of switching tube, be control switch conducting with cut-off port, be
The grid of metal-oxide-semiconductor.
Preferably, the driving signal that the control terminal of the switching tube applies is complementary with the driving signal of main switch, or
Incomplementarity.
Preferably, when the driving signal that the driving signal and main switch for stating switching tube application apply is provided with certain dead zone
Between.
The utility model has the following beneficial effects:
The utility model can be in the way of single clamp circuit absorption leakage inductance, only to armature winding one of in circuit
Clamp circuit is arranged in unit, can either all windings of choke transformer energy, while by clamper power switch tube into
Row control, realizes the ZVS of all power switch tubes of tandem type circuit of reversed excitation, integrally reduces the switch damage of power switch tube
Consumption, improves the switching frequency of the topology, and control mode is simple.In the preferable situation of the primary side winding degree of coupling, single clamper
Circuit can absorb most transformer primary winding leakage inductance, and transducer effciency further increases.
Detailed description of the invention
Fig. 1 is a kind of well-known technique high voltage eclipsed form circuit of reversed excitation schematic diagram；
Fig. 2 is the utility model first embodiment circuit diagram；
Fig. 3 is the utility model first embodiment driver' s timing figure；
Fig. 4 is the utility model first embodiment circuit simulation working curve diagram；
Fig. 5 is the utility model first embodiment circuit simulation curve local expansion figure；
Fig. 6 is the utility model second embodiment circuit diagram.
Specific embodiment
The design of the utility model is transformer winding leakage inductance to be absorbed using single clamp circuit, while utilizing single clamper
The energy of all transformer winding units of circuit chokes, realizes the ZVS of all power switch tubes.Below in conjunction with attached drawing and implementation
Example, the present invention will be described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
In restriction the utility model.
First embodiment
Fig. 2 is the first embodiment schematic diagram of the utility model series connection circuit of reversed excitation.Circuit includes input circuit, input electricity
Road includes two-stage armature winding unit and two-stage pressure unit, an output circuit, including secondary winding block；Armature winding unit
Including armature winding, main switch and an absorbing circuit and a clamp circuit.
As shown in Figure 2: voltage source Vin is input voltage, and capacitor C1, capacitor C2 are two-stage series connection type pressure unit respectively；
Transformer T1 is Multiple coil series transformer, including two armature windings and a secondary windings；Metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 are main switches
Pipe；Resistance R1, capacitor Cs1, diode D1 constitute absorbing circuit；Metal-oxide-semiconductor Q3 is that clamping switch tube, capacitor Cs2 are clamper electricity
Hold, diode D2 is chokes diode, composition clamp circuit；Transformer secondary output winding, diode D3, capacitor C3 constitute it is secondary around
Group unit.
As the present embodiment preferred embodiment, the preferred conventional RCD absorbing circuit of absorbing circuit, as implementable side
Case can also can absorb the absorption circuit of leakage inductance energy with other, and main function is to absorb leakage inductance energy, reduce master power switch
The pressure resistance of pipe, does not elaborate again.
The improved circuit of reversed excitation of the utility model is the single clamper electricity being made of metal-oxide-semiconductor Q3, capacitor Cs2, diode D2
Road is applied in series connection circuit of reversed excitation, and using the choke coil of single winding, chokes all windings of transformer realize all opens
Close the ZVS of pipe.As the preferred embodiment of the present embodiment, it is arranged in the two-stage armature winding unit in input circuit single
Clamp circuit, and the both ends that the second armature winding is connected in parallel in the armature winding unit of the second level are arranged in clamp circuit, as it
His embodiment, settable single clamp circuit, clamp circuit setting are connected in parallel on first in first order armature winding unit
The both ends of armature winding, or setting two-stage clamp circuit, are separately positioned in two-stage armature winding unit and are respectively connected in parallel on respectively
Grade unit armature winding both ends.
The connection relationship of the present embodiment is as follows:
The anode of input voltage vin is connected with one end of capacitor C1, and the other end of capacitor C1 is connected with the one end capacitor C2, electricity
Hold the C2 other end be connected with the negative terminal of input voltage vin, the one end resistance R1, capacitor Cs1 one end and input voltage vin anode phase
Even, the resistance R1 other end, the capacitor Cs1 other end are connected with the cathode of diode D1, transformer the first armature winding Lp1 Same Name of Ends
It is connected with input voltage vin anode, the first winding of transformer Lp1 different name end is connected with diode D1 anode, metal-oxide-semiconductor Q1 drain electrode,
The Same Name of Ends of metal-oxide-semiconductor Q1 source electrode and the second winding of transformer Lp2, the anode of diode D2, one end of capacitor Cs2, capacitor C1 with
The connected end of capacitor C2 is connected, and the drain electrode of power tube Q3 is connected with the other end of the cathode of diode D2, capacitor Cs2, metal-oxide-semiconductor Q3
Source electrode be connected with the different name end of the drain electrode of metal-oxide-semiconductor Q2, the second winding of transformer Lp2, the source electrode and input voltage of metal-oxide-semiconductor Q2
The negative terminal of Vin is connected, and transformer secondary output winding Ls1 Same Name of Ends is connected with the negative terminal of output voltage Vo, transformer secondary output winding Ls1
Different name end is connected with the anode of diode D3, and the cathode of diode D3 is connected with one end of the anode of output voltage Vo, capacitor C3,
The other end of capacitor C3 is connected with the negative terminal of output voltage Vo.
The main switch of the present embodiment and the driver' s timing of clamping switch tube use complementary type, are illustrated in figure 3 circuit
Switching tube driver' s timing figure, as shown in figure 3, wherein Vg1 is the driving signal of metal-oxide-semiconductor Q1 and Q2, Vg2 is the driving of metal-oxide-semiconductor Q3
Signal, metal-oxide-semiconductor Q1 and Q2 are synchronous driving, and the driving signal of metal-oxide-semiconductor Q3 is complementary with the driving signal of metal-oxide-semiconductor Q1 and Q2；To this
The circuit of scheme is emulated, and simulation parameter is arranged are as follows: input voltage 1000V, output voltage 12V, output power 40W, switch
150 μ H of frequency 65kHz, C1, C2 capacitor, magnetizing inductance each 350uH of two armature winding of transformer, transformer leakage inductance 18uH, circle
Than 10:1, R1 resistance 5.6K Ω, Cs1 capacitor takes 27nF, and Cs2 capacitor takes 47nF, Vg1, Vg2 complementary drive, circuit operation simulation
For wavy curve as shown in figure 4, VG1 is metal-oxide-semiconductor Q1, Q2 drive signal waveform in figure, VG2 is metal-oxide-semiconductor Q3 drive signal waveform,
Vsw1 is the drain-source voltage waveform of metal-oxide-semiconductor Q1, and Vsw2 is the drain-source voltage waveform of metal-oxide-semiconductor Q2, and Vsw3 is the leakage of metal-oxide-semiconductor Q3
Source voltage waveform, Ip are the excitation current waveforms of the second winding of transformer Lp2, and Is is the electric current of transformer secondary output winding Ls1
Waveform.Fig. 5 is that Fig. 4 waveform local expansion decomposes waveform diagram.
In conjunction with Fig. 4 and Fig. 5, the present embodiment working principle is as follows:
[t0~t1 stage]: stage Vg1 is high level, and Vg2 is low level, and metal-oxide-semiconductor Q1, Q2 are connected, and metal-oxide-semiconductor Q3 is cut
Only, primary side magnetizing inductance carries out excitation, and exciting current value is(wherein, Vin is input voltage, Lm1 and
Lm2 distinguishes the value of two armature winding of transformer primary side, two magnetizing inductance, and t is excitation time), diode D3 is output rectification two
Because diode D3 reversely ends, its backward voltage stress born of diode D3 is for pole pipe, secondary windings and auxiliary winding(wherein, Vin is input voltage, and Nps is transformer primary and secondary winding turns ratio, and Vo is output voltage), switch
The backward voltage stress that pipe Q3 is born isThe stage is maintained to the t1 moment.
[t1~t2 stage]: the stage Vg1, Vg2 are low level, t1 moment metal-oxide-semiconductor Q1, Q2 shutdown, primary side excitation electricity
Stream first charges to the output capacitance (junction capacity) of metal-oxide-semiconductor Q1, Q2, while output capacitance (junction capacity) electric discharge of metal-oxide-semiconductor Q3, clamper
Capacitor Cs2 end voltage has been discharged into zero in upper a cycle, when the output capacitance (junction capacity) of metal-oxide-semiconductor Q3 discharges into zero,
Body diode conducting, leakage inductance will with clamp capacitor Cs2 resonance, and start give clamp capacitor Cs2 charging, the end clamp capacitor Cs2 electricity
Press rising of starting from scratch；Pair side rectifier diode D3 is connected in the stage, and transformer transmits energy to secondary side, gives outlet side secondary
Winding element provides energy, and primary side magnetizing inductance end voltage is clamped at voltage value-NpsVo(wherein Nps is primary and secondary winding
The turn ratio), which is maintained to the t2 moment.
[t2~t3 stage]: stage Vg1 is low level, and Vg2 is high level, metal-oxide-semiconductor Q3 conducting, leakage inductance and clamp capacitor
Cs2 continues resonance, and continues to give clamp capacitor Cs2 charging, until leakage inductance electric current drops to zero, clamp capacitor end voltage can on
Being raised to maximum value is VCs2_max(it is greater than reflected voltage NpsVo), the inverse peak voltage that metal-oxide-semiconductor Q1, Q2 is able to bear at this time is answered
Power isAs the electric current for being transmitted to secondary side gradually decreases, and since metal-oxide-semiconductor Q3 is still within conducting
State will start to discharge after clamp capacitor Cs2 charging complete, and being discharged to voltage value is NpsVoAfter be clamped, clamping state will
Continue until that secondary current drops to zero, subsequent output diode D3 reversely ends, because there is no quilts for primary side magnetizing inductance voltage
Clamper, clamp capacitor Cs2 will continue to discharge, and a portion energy passes to secondary side, part energy for primary side it is each it is primary around
Group carries out reversed excitation, and reversed exciting current direction is that (i.e. the different name end of primary winding is to Same Name of Ends from top to bottom
Direction), and (choke coil circuit here refers to, by diode D2, metal-oxide-semiconductor Q3, transformer by choke coil formation continuous current circuit
The circuit that secondary windings Lp2 is constituted), so that is, primary side magnetizing inductance is short-circuited.The stage is maintained to the t3 moment.
[t3~t4 stage]: the stage Vg1, Vg2 are low level, and metal-oxide-semiconductor Q1, Q2, Q3 cut-off, choke coil circuit is closed
Disconnected, in order to maintain primary side current of transformer access, reversed exciting current can be by the output capacitance (junction capacity) of metal-oxide-semiconductor Q1 and Q2
Energy is taken away, and input power is fed back to, and the drain-source voltage Vds for being maintained to metal-oxide-semiconductor Q1/Q2 is negative voltage, and amplitude is rigid
It is less than the forward conduction voltage drop of its body diode well, at this point, current loop is transferred to body diode by junction capacity capacitor, so that
The drain-source voltage Vds of metal-oxide-semiconductor Q1/Q2 is clamped, and provides ZVS item to enter opening for next cycle metal-oxide-semiconductor Q1/Q2
Part, as shown, entering next cycle (after the t4 moment) at the t4 moment, the driver' s timing of metal-oxide-semiconductor Q1 and Q2 become high
Level, by driving metal-oxide-semiconductor Q1 and Q2 conducting, since within a upper period, the hourglass source electrode of metal-oxide-semiconductor Q1 and Q2 have been clamped to zero,
In metal-oxide-semiconductor Q1 and Q2 conducting, the no-voltage conducting of metal-oxide-semiconductor, i.e. ZVS are realized.
The above process always go down by circular flow.It can satisfy main switch and realize Sofe Switch function (ZVS), it is corresponding to reduce
Switching loss improves the efficiency and reliability of transformer, and circuit control is simple, meets standard switch power source development requirement.
Second embodiment
It is illustrated in figure 6 the circuit diagram of the utility model second embodiment, the present embodiment is the electricity of first embodiment
Road topology, which is expanded, to be implemented, with Fig. 2 first embodiment the difference is that second embodiment includes: the identical power supply of N (N >=2) grade
Converter armature winding unit and equalizing capacitance, wherein clamp circuit is arranged in final stage armature winding unit, after overlapped in series
The working principle of circuit is, it can be achieved that equivalent efficacy as first embodiment, then this is not repeated.
The embodiments of the present invention is without being limited thereto, according to the above content of the utility model, utilizes the general of this field
Logical technological know-how and customary means have in the utility model under the premise of not departing from the utility model above-mentioned basic fundamental thought
Body implementing circuit can also make the modification, replacement or change of other diversified forms, all fall within the utility model rights protection model
Within enclosing.In addition, these terms are merely for convenience of description although using some specific terms in this specification, and
Any restrictions are not constituted to the utility model.In addition, all connection/connection relationships being related in patent, not singly refer to component
Directly connect, and referring to can be according to specific implementation situation, by adding or reducing couple auxiliary, Lai Zucheng more preferably couples knot
Structure.Each technical characteristic in the invention, can be with combination of interactions under the premise of not conflicting conflict.
Claims (6)
1. a kind of circuit of reversed excitation, comprising: input circuit, input circuit includes the armature winding unit of at least two-stage and pressure is single
Member, every grade of armature winding unit is in parallel with pressure unit, and armature winding unit at different levels is serially connected, pressure unit at different levels
It is serially connected；Chopped-off head armature winding unit input terminal connection DC voltage positive voltage terminal, final stage armature winding unit it is defeated
Outlet ground connection；Every grade of armature winding unit includes armature winding, main switch and absorbing circuit, one end conduct of armature winding
The conducting electric current of the input terminal of armature winding unit, the other end connection main switch of armature winding flows into end, main switch
Conducting electric current outflow end connects the input terminal of next stage armature winding unit, and absorbing circuit is connected in parallel on the both ends of armature winding；Respectively
The control terminal of grade main switch applies synchronous driving signal, and armature windings at different levels are the same as phase control and total magnetic core；It is characterized by:
Absorbing circuit at least in level-one armature winding unit replaces with a clamp circuit, and the clamp circuit is each first by absorbing
Grade winding leakage inductance energy realizes Sofe Switch function (ZVS) to control the main switch of armature winding units at different levels.
2. circuit of reversed excitation according to claim 1, it is characterised in that: the absorbing circuit in the final stage armature winding unit
Replace with a clamp circuit.
3. circuit of reversed excitation according to claim 1, it is characterised in that: the clamp circuit include a capacitor, a diode,
One switching tube；Work as input terminal, the diode anode of grade armature winding unit, capacitor other end connection two where the connection of capacitor one end
Pole pipe cathode, switching tube conducting electric current flow into end, when grade armature winding unit where the connection of switching tube conducting electric current outflow end
The conducting electric current of main switch flows into end, and the control terminal of switching tube applies driving signal.
4. circuit of reversed excitation according to claim 3, it is characterised in that: the switching tube is metal-oxide-semiconductor, the electric conduction of switching tube
Input terminal is flowed, is the drain electrode of metal-oxide-semiconductor, the conducting electric current output end of switching tube is the source electrode of metal-oxide-semiconductor, and the control terminal of switching tube is
The port of control switch conducting and cut-off is the grid of metal-oxide-semiconductor.
5. circuit of reversed excitation according to claim 3, it is characterised in that: the driving signal that the control terminal of the switching tube applies
The complementary or incomplementarity with the driving signal of main switch.
6. circuit of reversed excitation according to claim 5, it is characterised in that: the driving signal and main switch that the switching tube applies
The driving signal that pipe applies is provided with certain dead time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211637.3U CN209375473U (en) | 2019-02-19 | 2019-02-19 | A kind of circuit of reversed excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211637.3U CN209375473U (en) | 2019-02-19 | 2019-02-19 | A kind of circuit of reversed excitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375473U true CN209375473U (en) | 2019-09-10 |
Family
ID=67827088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920211637.3U Active CN209375473U (en) | 2019-02-19 | 2019-02-19 | A kind of circuit of reversed excitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209375473U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969858A (en) * | 2020-08-25 | 2020-11-20 | 特变电工西安柔性输配电有限公司 | High-order energy-taking power circuit and control method thereof |
| CN112332645A (en) * | 2020-09-23 | 2021-02-05 | 广州智光电气技术有限公司 | Switching tube series type switching power supply |
| CN113489329A (en) * | 2021-06-22 | 2021-10-08 | 广州金升阳科技有限公司 | Control method and device of switching power supply |
| WO2022077751A1 (en) * | 2020-10-15 | 2022-04-21 | 华源智信半导体(深圳)有限公司 | Switching power supply and electronic device |
| CN114726227A (en) * | 2022-06-08 | 2022-07-08 | 苏州明纬科技有限公司 | Flyback circuit and power supply |
| WO2023016482A1 (en) * | 2021-08-10 | 2023-02-16 | 苏州艾科脉医疗技术有限公司 | High-voltage generating circuit for catheter and ablation tool |
-
2019
- 2019-02-19 CN CN201920211637.3U patent/CN209375473U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969858A (en) * | 2020-08-25 | 2020-11-20 | 特变电工西安柔性输配电有限公司 | High-order energy-taking power circuit and control method thereof |
| CN112332645A (en) * | 2020-09-23 | 2021-02-05 | 广州智光电气技术有限公司 | Switching tube series type switching power supply |
| WO2022077751A1 (en) * | 2020-10-15 | 2022-04-21 | 华源智信半导体(深圳)有限公司 | Switching power supply and electronic device |
| CN113489329A (en) * | 2021-06-22 | 2021-10-08 | 广州金升阳科技有限公司 | Control method and device of switching power supply |
| WO2023016482A1 (en) * | 2021-08-10 | 2023-02-16 | 苏州艾科脉医疗技术有限公司 | High-voltage generating circuit for catheter and ablation tool |
| CN114726227A (en) * | 2022-06-08 | 2022-07-08 | 苏州明纬科技有限公司 | Flyback circuit and power supply |
| CN114726227B (en) * | 2022-06-08 | 2022-08-30 | 苏州明纬科技有限公司 | Flyback circuit and power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209375473U (en) | A kind of circuit of reversed excitation | |
| CN209562410U (en) | A kind of flyback converter | |
| CN105141138B (en) | A kind of voltage-multiplying type Sofe Switch type recommends DC converter | |
| CN205911955U (en) | Active clamping's flyback converter | |
| CN205960954U (en) | Turn over and swash control circuit | |
| CN109217681A (en) | A kind of two-way resonance converter | |
| CN100379132C (en) | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter | |
| CN105207486B (en) | A kind of two-way resonance DC converter and its control method | |
| CN207218541U (en) | A kind of quasi-resonance soft switch double-transistor flyback DC/DC converters | |
| CN104124874A (en) | Ultrahigh-frequency isolating resonant converter | |
| CN104980037A (en) | Secondary side adjustment type fixed frequency resonant converter and control method thereof | |
| CN103618444A (en) | Three-winding coupling inductance ZVS/ZCS double-tube boost converter | |
| CN104638931B (en) | The forward-flyback converter of symmetrical RCD clamps | |
| CN205754023U (en) | A kind of high efficiency high-power phase-shifting full-bridge Zero-voltage soft switch circuit | |
| CN112491258B (en) | Clamping circuit of active clamping flyback converter and control method thereof | |
| CN109698627A (en) | A kind of full-bridge DC/DC converter and its modulation strategy based on switched capacitor | |
| CN108539988A (en) | A kind of converter and its control method | |
| CN102739064B (en) | Soft-switch full wave rectifying push-pull normal shock inverter | |
| CN101127482B (en) | Original edge clamp circuit of DC converter | |
| CN108667301A (en) | A kind of full-bridge converter with freewheeling path | |
| CN109104092B (en) | Low switch tube voltage stress current type output resonant converter | |
| CN208424210U (en) | A kind of DC-DC converter | |
| WO2019218706A1 (en) | Dc-dc converter | |
| CN106253658A (en) | A kind of circuit of power factor correction | |
| CN113422515B (en) | Non-isolated bidirectional soft switch DC-DC converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |