CN106452047B - A kind of single-stage isolated circuit of power factor correction - Google Patents
A kind of single-stage isolated circuit of power factor correction Download PDFInfo
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- CN106452047B CN106452047B CN201610944927.XA CN201610944927A CN106452047B CN 106452047 B CN106452047 B CN 106452047B CN 201610944927 A CN201610944927 A CN 201610944927A CN 106452047 B CN106452047 B CN 106452047B
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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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4241—Arrangements for improving power factor of AC input using a resonant converter
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
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Abstract
The invention discloses a kind of single-stage isolated circuit of power factor correction, include bridge-type module, power factor inductance Lp, transformer T, capacitance Cp, resonant inductance Lr, damping module, the first clamper module, switching tube Q1 and output module；Compared with traditional multiple power levels factor correcting conversion circuit with electrical isolation, the function of single-stage electrical isolation and PFC can be realized by less electronic component by the present invention, have the advantages that at low cost, high-efficient, circuit structure is simple.
Description
Technical field
The present invention relates to IC design technical fields, and in particular to a kind of single-stage isolated circuit of power factor correction.
Background technique
The power factor correction converter with electrical isolation is usually and is made of two-stage power conversion grade at present：Previous stage
Input voltage waveform is followed to control input current after full-bridge rectification by boost converter and realizes PFC.Afterwards
Face is further added by level-one DC/DC converter to realize electrical isolation and pressure regulation.The circuit of this structure can effective power because
Number corrects and realizes relatively good efficiency, but since it has multistage conversion, causes higher cost, and boost converter
Output capacitance is larger, and there are biggish surge circuits.
At present it has been proposed that realizing that single-stage isolated AC-DC PFC turns using the topology of Flyback and SEPIC
Parallel operation.But these single-stage isolated Pfc converters are only suitable for small-power, and be to reduce Harmonics of Input component, these topologys
Circuit needs to increase additional wires and is just able to achieve, this also increases complexity and cost.
Summary of the invention
The purpose of the present invention is being directed to above-mentioned deficiency in the prior art, it is simple to provide a kind of circuit structure, at low cost,
High efficiency, the single-stage isolated circuit of power factor correction of reliable performance.
The purpose of the present invention is achieved through the following technical solutions：A kind of single-stage isolated circuit of power factor correction includes
Bridge-type module, power factor inductance Lp, transformer T, capacitance Cp, resonant inductance Lr, damping module, the first clamper module,
Switching tube Q1 and output module；
The input terminal of the bridge-type module is electrically connected with exchange；One output end of the bridge-type module passes through power factor
Inductance Lp is connect with one end of transformer T primary coil；One output end of the bridge-type module passes through damping module and resonance
One end of inductance Lr connects；The other end of the resonant inductance Lr is connect with the other end of transformer T primary coil；
One end of the capacitance Cp is connect with one end of resonant inductance Lr, the other end and bridge-type mould of capacitance Cp
The another output of block connects；
The drain electrode of the switching tube Q1 is connect with one end of transformer T primary coil, the source electrode and bridge-type mould of switching tube Q1
The another output of block connects；
One end of the first clamper module is connect with one end of transformer T primary coil, the first clamper module it is another
End is connect with the another output of bridge-type module；
The output module is connect with transformer T secondary coil.
The present invention is further arranged to, and the first clamper module includes diode D1, metal-oxide-semiconductor Q2 and clamp capacitor C1；
The source electrode of the metal-oxide-semiconductor Q2 is connect with one end of transformer T primary coil, and the drain electrode of metal-oxide-semiconductor Q2 passes through clamp capacitor C1 and bridge
The another output of formula module connects；The anode of the diode D1 is connect with the source electrode of metal-oxide-semiconductor Q2, the cathode of diode D1
It is connect with the drain electrode of metal-oxide-semiconductor Q2.
A kind of single-stage isolated circuit of power factor correction, including power factor inductance Lp, transformer T, capacitance Cp,
Resonant inductance Lr, damping module, the second clamper module, switching tube Q3, switching tube Q4 and output module；
One end of the power factor inductance Lp is connect with one end of alternating current input source, and power factor inductance Lp's is another
End is connect with one end of transformer T primary coil；One end of the power factor inductance Lp passes through damping module and resonant inductance
One end of Lr connects；The other end of the resonant inductance Lr is connect with the other end of transformer T primary coil；
One end of the capacitance Cp is connect with one end of resonant inductance Lr, the other end and alternating current of capacitance Cp
The other end of input source connects；
The drain electrode of the switching tube Q3 is connect with one end of transformer T primary coil, the source electrode and switching tube of switching tube Q3
The source electrode of Q4 connects；The drain electrode of the switching tube Q4 is connect with the other end of alternating current input source；
One end of the second clamper module is connect with one end of transformer T primary coil, the second clamper module it is another
End is connect with the other end of alternating current input source；
The output module is connect with transformer T secondary coil.
The present invention is further arranged to, and the second clamper module includes metal-oxide-semiconductor Q5, metal-oxide-semiconductor Q6 and clamp capacitor
C2；The source electrode of the metal-oxide-semiconductor Q5 is connect with one end of transformer T primary coil, the drain electrode of metal-oxide-semiconductor Q5 and the source electrode of metal-oxide-semiconductor Q6
Connection；The drain electrode of the metal-oxide-semiconductor Q6 is connect by clamp capacitor C2 with the other end of alternating current input source.
The present invention is further arranged to, and the clamp capacitor C2 is parallel with flip module；The flip module includes electricity
Feel L1, triode D2 and triode D3；One end of the inductance L1 is connect with one end of clamp capacitor C2；The inductance L1's
The other end is connect with the collector of triode D2；The emitter of the triode D2 is connect with the emitter of triode D3；It is described
The collector of triode D3 is connect with the other end of clamp capacitor C2.
The present invention is further arranged to, and the damping module includes resistance Rd and inductance Ld；The one of the inductance Ld
End is connect with one end of power factor inductance Lp；The other end of the inductance Ld is connect with one end of resistance Rd；The resistance Rd
The other end connect with one end of resonant inductance Lr.
The present invention is further arranged to, and the output module includes inductance L2, capacitor CL1, capacitor CL2, capacitor C3, electricity
Resistance R1 and the rectifier bridge being made of diode Ds1, diode Ds2, diode Ds3, diode Ds4；Time of the transformer T
Two ports of grade coil are connect with two input terminals of rectifier bridge respectively；One output end of the rectifier bridge passes through capacitor
The connection of the another output of CL1 and rectifier bridge；One output end of the rectifier bridge is connect with one end of inductance L2；The electricity
The other end for feeling L2 is connected by the another output of resistance R1 and rectifier bridge；The other end of the inductance L2 passes through capacitor
The connection of the another output of CL2 and rectifier bridge；One end of the inductance L2 is connect by capacitor C3 with resistance R1.
Beneficial effects of the present invention：Compared with traditional multiple power levels factor correcting conversion circuit with electrical isolation, this
The function of single-stage electrical isolation and PFC can be realized by less electronic component for invention, with it is at low cost,
Advantage high-efficient, circuit structure is simple.
Detailed description of the invention
Invention is described further using attached drawing, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to the following drawings
Its attached drawing.
Fig. 1 is the circuit diagram of the embodiment of the present invention 1；
Fig. 2 is the circuit diagram of the embodiment of the present invention 2.
Specific embodiment
The invention will be further described with the following Examples.
Embodiment 1；
As shown in Figure 1；A kind of single-stage isolated circuit of power factor correction described in the present embodiment, include bridge-type module,
Power factor inductance Lp, transformer T, capacitance Cp, resonant inductance Lr, damping module, the first clamper module, switching tube Q1 with
And output module；The input terminal of the bridge-type module is electrically connected with exchange；One output end of the bridge-type module passes through power
Factor inductance Lp is connect with one end of transformer T primary coil；One output end of the bridge-type module by damping module with
One end of resonant inductance Lr connects；The other end of the resonant inductance Lr is connect with the other end of transformer T primary coil；It is described
One end of capacitance Cp is connect with one end of resonant inductance Lr, and another of the other end of capacitance Cp and bridge-type module are defeated
Outlet connection；The drain electrode of the switching tube Q1 is connect with one end of transformer T primary coil, the source electrode and bridge-type mould of switching tube Q1
The another output of block connects；One end of the first clamper module is connect with one end of transformer T primary coil, the first pincers
The other end of position module is connect with the another output of bridge-type module；The output module is connect with transformer T secondary coil.
The first clamper module includes diode D1, metal-oxide-semiconductor Q2 and clamp capacitor C1；The source of the metal-oxide-semiconductor Q2
Pole is connect with one end of transformer T primary coil, and the drain electrode of metal-oxide-semiconductor Q2 is defeated by another of clamp capacitor C1 and bridge-type module
Outlet connection；The anode of the diode D1 is connect with the source electrode of metal-oxide-semiconductor Q2, the drain electrode of the cathode and metal-oxide-semiconductor Q2 of diode D1
Connection.
The clamp capacitor C2 is parallel with flip module；The flip module includes inductance L1, triode D2 and three
Pole pipe D3；One end of the inductance L1 is connect with one end of clamp capacitor C2；The other end of the inductance L1 is with triode D2's
Collector connection；The emitter of the triode D2 is connect with the emitter of triode D3；The collector of the triode D3 with
The other end of clamp capacitor C2 connects.
The damping module includes resistance Rd and inductance Ld；One end of the inductance Ld is with power factor inductance Lp's
One end connection；The other end of the inductance Ld is connect with one end of resistance Rd；The other end and resonant inductance Lr of the resistance Rd
One end connection.
The output module includes inductance L2, capacitor CL1, capacitor CL2, capacitor C3, resistance R1 and by diode
The rectifier bridge that Ds1, diode Ds2, diode Ds3, diode Ds4 are formed；Two ports of the secondary coil of the transformer T
It is connect respectively with two input terminals of rectifier bridge；One output end of the rectifier bridge is another by capacitor CL1 and rectifier bridge
A output end connection；One output end of the rectifier bridge is connect with one end of inductance L2；The other end of the inductance L2 passes through
The connection of the another output of resistance R1 and rectifier bridge；The other end of the inductance L2 is another by capacitor CL2 and rectifier bridge
A output end connection；One end of the inductance L2 is connect by capacitor C3 with resistance R1.
Specifically, the driving signal of switching tube Q1 is fed back by control system according to adjusting input current and output voltage signal
The pulse-width modulation PWM signal of generation generates, and the driving signal of metal-oxide-semiconductor Q2 is mutual to have certain dead zone to be delayed with the driving signal of Q1
Complement signal；When the moment before metal-oxide-semiconductor Q2 is turned off, the electric current of transformer T primary coil be power factor inductance Lp electric current Ip and by
The sum of the electric current Iclamp that clamp capacitor C1 is provided, during metal-oxide-semiconductor Q2 shutdown and switching tube Q1 conducting driving not yet provide,
Since the electric current of resonant inductance Lr and power factor inductance Lp cannot be mutated, and metal-oxide-semiconductor Q2 has turned off and is provided by clamp capacitor C1
The circuit electric current Iclamp, then this portion of energy is transferred to switching tube Q1, between the hourglass source electrode of metal-oxide-semiconductor Q2 on capacitor.Period by
It constantly discharges in the drain-source electrode capacitance of switching tube Q1, the drain-source electrode capacitance of metal-oxide-semiconductor Q2 constantly charges, until the drain-source of switching tube Q1
Turn to be connected by its anti-parallel diodes D1 after voltage is zero between pole；Turn after voltage is zero between the hourglass source electrode of switching tube Q1
When being connected by its anti-parallel diodes D1, switching tube Q1 driving is given at this time, and the ZVS no-voltage that switching tube Q1 can be realized is opened
Logical Sofe Switch；
And the power factor inductance Lp when switching tube Q1 conducting, switching tube Q1, bridge-type module, AC power supplies form circuit, function
Rate factor inductance Lp storage energy, electric current Ip are gradually increasing.Transformer T primary coil, resonant inductance Lr, capacitance Cp and
Switching tube Q1 forms another circuit, and electric current is gradually increased by positive negative opposite direction, and secondary current waveform and primary current waveform
Unanimously, only amplitude changes according to the primary and secondary circle number of transformer T than equal proportion, by two pole isolation capacitance Cs and secondary commutation
Pipe is transferred to output capacitance and load；During switching tube Q1 shutdown and metal-oxide-semiconductor Q2 conducting driving not yet provide, due to resonance
The electric current of inductance Lr and power factor inductance Lp special cannot become, on the one hand Lp and Lr energy is between the hourglass source electrode to switching tube Q1
Capacitor charges, and is on the one hand that capacitor discharges between the hourglass source electrode to metal-oxide-semiconductor Q2, until electricity between the hourglass source electrode of metal-oxide-semiconductor Q2
Pressure turns to be connected by its anti-parallel diodes D1 after being zero, charges to clamp capacitor C1, and resonant inductance Lr energy release, electric current subtracts
It is small；When between the hourglass source electrode of metal-oxide-semiconductor Q2 voltage be zero after turn by its anti-parallel diodes D1 be connected when, give metal-oxide-semiconductor at this time
Q2 driving, can be realized the ZVS of metal-oxide-semiconductor Q2, the Sofe Switch that no-voltage is opened.When Q2 conducting, power factor inductance Lp is in
Freewheeling state, Ip are gradually reduced.The electric current of C1, Q2 are also gradually reduced, and then opposite direction is gradually increased, and are discharged by clamp capacitor C1
Energy is provided, resonant inductance Lr storage energy is turned to, transformer primary current opposite direction is gradually increased, secondary current also opposite direction
Increase, is transferred to output capacitance and load by isolation capacitance Cs and secondary commutation diode.
Embodiment 2；
As shown in Fig. 2, a kind of single-stage isolated circuit of power factor correction, including power factor inductance Lp, transformer T,
Capacitance Cp, resonant inductance Lr, damping module, the second clamper module, switching tube Q3, switching tube Q4 and output module；Institute
The one end for stating power factor inductance Lp is connect with one end of alternating current input source, the other end and transformer of power factor inductance Lp
One end of T primary coil connects；One end of the power factor inductance Lp is connected by one end of damping module and resonant inductance Lr
It connects；The other end of the resonant inductance Lr is connect with the other end of transformer T primary coil；One end of the capacitance Cp with
One end of resonant inductance Lr connects, and the other end of capacitance Cp is connect with the other end of alternating current input source；The switching tube
The drain electrode of Q3 is connect with one end of transformer T primary coil, and the source electrode of switching tube Q3 is connect with the source electrode of switching tube Q4；It is described to open
The drain electrode for closing pipe Q4 is connect with the other end of alternating current input source；One end of the second clamper module and transformer T primary line
One end of circle connects, and the other end of the second clamper module is connect with the other end of alternating current input source；The output module and change
The connection of depressor T secondary coil.
The second clamper module includes metal-oxide-semiconductor Q5, metal-oxide-semiconductor Q6 and clamp capacitor C2；The source electrode of the metal-oxide-semiconductor Q5
It is connect with one end of transformer T primary coil, the drain electrode of metal-oxide-semiconductor Q5 is connect with the source electrode of metal-oxide-semiconductor Q6；The leakage of the metal-oxide-semiconductor Q6
Pole is connect by clamp capacitor C2 with the other end of alternating current input source.
The clamp capacitor C2 is parallel with flip module；The flip module includes inductance L1, triode D2 and three
Pole pipe D3；One end of the inductance L1 is connect with one end of clamp capacitor C2；The other end of the inductance L1 is with triode D2's
Collector connection；The emitter of the triode D2 is connect with the emitter of triode D3；The collector of the triode D3 with
The other end of clamp capacitor C2 connects.
The damping module includes resistance Rd and inductance Ld；One end of the inductance Ld is with power factor inductance Lp's
One end connection；The other end of the inductance Ld is connect with one end of resistance Rd；The other end and resonant inductance Lr of the resistance Rd
One end connection.
The output module includes inductance L2, capacitor CL1, capacitor CL2, capacitor C3, resistance R1 and by diode
The rectifier bridge that Ds1, diode Ds2, diode Ds3, diode Ds4 are formed；Two ports of the secondary coil of the transformer T
It is connect respectively with two input terminals of rectifier bridge；One output end of the rectifier bridge is another by capacitor CL1 and rectifier bridge
A output end connection；One output end of the rectifier bridge is connect with one end of inductance L2；The other end of the inductance L2 passes through
The connection of the another output of resistance R1 and rectifier bridge；The other end of the inductance L2 is another by capacitor CL2 and rectifier bridge
A output end connection；One end of the inductance L2 is connect by capacitor C3 with resistance R1.
Specifically, different with embodiment 1 to be, a kind of single-stage isolated PFC electricity described in the present embodiment
Road, difference are that as input voltage V_Line_1 be timing relative to V_line_2, and switching tube Q4 and metal-oxide-semiconductor Q5 are kept according to input
Voltage and current and output voltage adjust the pulse-width signal provided, and the driving signal of Q6 is to have centainly with the driving signal of Q3
Conducting, the working sequence and the previously described Q1 with rectifier bridge of Q3 and Q6, the working sequence of Q2 is the same, and Q3's is driven to control
The complementary signal of system root dead zone delay.
When input voltage V_Line_1 is negative relative to V_line_2, Q3 and Q6 are held on, the working sequence of Q4 and Q5
With the previously described Q1 with rectifier bridge, the working sequence of Q2 is the same, and Q4's is driven to control system according to input voltage and input current
The pulse-width signal provided is adjusted with output voltage, the driving signal of Q5 is to have certain dead zone to be delayed with the driving signal of Q3
Complementary signal.And in zero crossing, by the driving signal Sflip of fixed pulse width such as 10us, C2 polarity upset is formed with L1
Route, by C2 both end voltage polarity upset, this flip module is used in the source AC voltage over zero, overturns the both ends clamp capacitor C2
The polarity of voltage.This module can mitigate the voltage and current stress of primary wire device, improve efficiency.
In addition to these two aspects is distinguished, other working sequences, mode is as working method of the front with rectifier bridge, here
It repeats no more.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (4)
1. a kind of single-stage isolated circuit of power factor correction, it is characterised in that：Include bridge-type module, power factor inductance Lp,
Transformer T, capacitance Cp, resonant inductance Lr, damping module, the first clamper module, switching tube Q1 and output module；
The input terminal of the bridge-type module is electrically connected with exchange；One output end of the bridge-type module passes through power factor inductance
Lp is connect with one end of transformer T primary coil；One output end of the bridge-type module passes through damping module and resonant inductance
One end of Lr connects；The other end of the resonant inductance Lr is connect with the other end of transformer T primary coil；
One end of the capacitance Cp is connect with one end of resonant inductance Lr, the other end and the bridge-type module of capacitance Cp
Another output connection；
The drain electrode of the switching tube Q1 is connect with one end of transformer T primary coil, source electrode and the bridge-type module of switching tube Q1
Another output connection；
One end of the first clamper module is connect with one end of transformer T primary coil, the other end of the first clamper module with
The another output of bridge-type module connects；
The output module is connect with transformer T secondary coil；
First clamper module includes diode D1, metal-oxide-semiconductor Q2 and clamp capacitor C1；The source electrode and transformation of the metal-oxide-semiconductor Q2
One end of device T primary coil connects, and the drain electrode of metal-oxide-semiconductor Q2 is connected by the another output of clamp capacitor C1 and bridge-type module
It connects；The anode of the diode D1 is connect with the source electrode of metal-oxide-semiconductor Q2, and the cathode of diode D1 is connect with the drain electrode of metal-oxide-semiconductor Q2；
The damping module includes resistance Rd and inductance Ld；One end of the inductance Ld and one end of power factor inductance Lp
Connection；The other end of the inductance Ld is connect with one end of resistance Rd；The other end of the resistance Rd and the one of resonant inductance Lr
End connection.
2. a kind of single-stage isolated circuit of power factor correction, it is characterised in that：Including power factor inductance Lp, transformer T, every
Straight capacitor Cp, resonant inductance Lr, damping module, the second clamper module, switching tube Q3, switching tube Q4 and output module；
One end of the power factor inductance Lp is connect with one end of alternating current input source, the other end of power factor inductance Lp with
One end of transformer T primary coil connects；One end of the power factor inductance Lp is by damping module with resonant inductance Lr's
One end connection；The other end of the resonant inductance Lr is connect with the other end of transformer T primary coil；
One end of the capacitance Cp is connect with one end of resonant inductance Lr, and the other end and alternating current of capacitance Cp inputs
The other end in source connects；
The drain electrode of the switching tube Q3 is connect with one end of transformer T primary coil, and the source electrode of switching tube Q3 is with switching tube Q4's
Source electrode connection；The drain electrode of the switching tube Q4 is connect with the other end of alternating current input source；
One end of the second clamper module is connect with one end of transformer T primary coil, the other end of the second clamper module with
The other end of alternating current input source connects；
The output module is connect with transformer T secondary coil；
The second clamper module includes metal-oxide-semiconductor Q5, metal-oxide-semiconductor Q6 and clamp capacitor C2；The source electrode of the metal-oxide-semiconductor Q5 and change
One end of depressor T primary coil connects, and the drain electrode of metal-oxide-semiconductor Q5 is connect with the source electrode of metal-oxide-semiconductor Q6；The drain electrode of the metal-oxide-semiconductor Q6 is logical
Clamp capacitor C2 is crossed to connect with the other end of alternating current input source；
The damping module includes resistance Rd and inductance Ld；One end of the inductance Ld and one end of power factor inductance Lp
Connection；The other end of the inductance Ld is connect with one end of resistance Rd；The other end of the resistance Rd and the one of resonant inductance Lr
End connection.
3. a kind of single-stage isolated circuit of power factor correction according to claim 2, it is characterised in that：The clamp capacitor
C2 is parallel with flip module；The flip module includes inductance L1, triode D2 and triode D3；The one of the inductance L1
End is connect with one end of clamp capacitor C2；The other end of the inductance L1 is connect with the collector of triode D2；The triode
The emitter of D2 is connect with the emitter of triode D3；The collector of the triode D3 and the other end of clamp capacitor C2 connect
It connects.
4. a kind of single-stage isolated circuit of power factor correction according to claim 1 or 2, it is characterised in that：The output
Module includes inductance L2, capacitor CL1, capacitor CL2, capacitor C3, resistance R1 and by diode Ds1, diode Ds2, two poles
The rectifier bridge of pipe Ds3, diode Ds4 composition；Two ports of the secondary coil of the transformer T, two with rectifier bridge respectively
Input terminal connection；One output end of the rectifier bridge is connected by the another output of capacitor CL1 and rectifier bridge；It is described whole
One output end of stream bridge is connect with one end of inductance L2；The other end of the inductance L2 is another by resistance R1 and rectifier bridge
A output end connection；The other end of the inductance L2 is connected by the another output of capacitor CL2 and rectifier bridge；The inductance
One end of L2 is connect by capacitor C3 with resistance R1.
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| CN205081703U (en) * | 2014-12-16 | 2016-03-09 | 意法半导体股份有限公司 | A equipment and converter system for power transistor of control power level |
| CN205657583U (en) * | 2015-01-26 | 2016-10-19 | 电力集成公司 | Circuit that uses, carry out damped circuit system and equipment to transformation among power converters's arrival current in power converters |
| CN206283411U (en) * | 2016-11-02 | 2017-06-27 | 全天自动化能源科技（东莞）有限公司 | A kind of single-stage isolated circuit of power factor correction |
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| CN1545756A (en) * | 2001-07-20 | 2004-11-10 | ��ķ��ɭ | Switched-mode power supply with a power factor correction circuit as well as a coil for a correction circuit for this purpose |
| CN1667930A (en) * | 2003-12-08 | 2005-09-14 | 林福泳 | A high power factor DC power supply |
| CN101136584A (en) * | 2007-09-14 | 2008-03-05 | 浙江大学 | Switching loss reduced single-stage power factor correcting circuit |
| CN202818089U (en) * | 2012-08-31 | 2013-03-20 | 杭州士兰微电子股份有限公司 | Power factor correction circuit |
| CN205081703U (en) * | 2014-12-16 | 2016-03-09 | 意法半导体股份有限公司 | A equipment and converter system for power transistor of control power level |
| CN205657583U (en) * | 2015-01-26 | 2016-10-19 | 电力集成公司 | Circuit that uses, carry out damped circuit system and equipment to transformation among power converters's arrival current in power converters |
| CN206283411U (en) * | 2016-11-02 | 2017-06-27 | 全天自动化能源科技（东莞）有限公司 | A kind of single-stage isolated circuit of power factor correction |
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