CN102684492A - High power factor converter - Google Patents
High power factor converter Download PDFInfo
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- CN102684492A CN102684492A CN2012101463497A CN201210146349A CN102684492A CN 102684492 A CN102684492 A CN 102684492A CN 2012101463497 A CN2012101463497 A CN 2012101463497A CN 201210146349 A CN201210146349 A CN 201210146349A CN 102684492 A CN102684492 A CN 102684492A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention relates to a high power factor converter. Traditional converter topology is difficult for realizing the high power factor and high efficiency at the same time. The high power factor converter is characterized in that one end of an alternative-current (AC) input power supply is connected with a positive electrode of a diode D1, a negative electrode of a diode D3 and a negative electrode of a diode D5, the other end of the AC input power supply is connected with a positive electrode of a diode D2, a negative electrode of a diode D4 and a negative electrode of a diode D6, a negative electrode of the diode D1 is connected with a negative electrode of the diode D2, a negative electrode of an output diode Do and one end of an inductance, the other end of the inductance is connected with a drain electrode of a switch tube Q2, a positive end of an output capacitor and one end of a load, a negative end of the output capacitor is connected with the other end of the load, a drain electrode of a switch tube Q1 and a positive electrode of the output diode, and a positive electrode of the diode D3 is connected with a positive electrode of the diode D4 and a source electrode of the switch tube Q1. Through proper control, the high power factor converter not only can realize a Buck-boost circuit function, but also can realize a Buck circuit function, so that the high power factor and the high efficiency can be realized.
Description
Technical field
The present invention relates to a kind of novel high power factor converting device, particularly be applied to the circuit of power factor correction occasion of high efficiency, low Harmonics of Input.
Background technology
Because the non-linear element in present most of power consumption equipments and the existence of energy-storage travelling wave tube can make the input AC current waveform that serious distortion takes place; Net side input power factor is very low; In order to satisfy the harmonic requirement of international standard IEC61000-3-2, must in these power consumption equipments, add power factor correcting device (PFC).The traditional active power factor correction circuit generally adopts Boost (boosting) topology, Buck-boost (buck) topology or Buck (voltage-dropping type) topology.Wherein, the Boost topology has control easily, drives simple and in whole power frequency period, can carry out switch work, and the power factor of input current can approach characteristics such as 1; But the Boost circuit has the high shortcoming of output voltage, and under wide region input (90Vac-265Vac) condition, can be in low-voltage section (90Vac-110Vac) efficient than the low 1-3% of high pressure section (220Vac-265Vac).And adopting Buck-boost (buck) topology, the relative Buck topology of circuit loss can be big.In the low-power applications occasion, Buck (step-down) topology can keep greater efficiency in whole input voltage range.Because the thermal design in the industry all designs according to the efficient minimum point, so the thermal design of Buck topology is also simple than Boost (boosting) topological sum Buck-boost (buck) topology.So it is at present Buck (voltage-dropping type) topology is used in the industrial products more and more,, as shown in Figure 1 like the prime pfc circuit of the DC-DC converter of middle low power or single-stage led driver etc.Yet Buck (voltage-dropping type) topology is applied to pfc circuit, the input voltage V after rectification
InLess than output voltage V
oThe interval in, input current i
AcBe zero, as shown in Figure 2.This section Dead Time has increased Harmonics of Input dramatically, has influenced net side input power factor.
Summary of the invention
To above-mentioned deficiency, the present invention proposes a kind of novel high power factor converting device topology.The novel converter topology that the present invention proposes can be realized the PFC function through the control to switching tube, and makes input current i
AcAt V
InLess than output voltage V
oThe interval in electric current is arranged.Thereby solved the described traditional B uck of preamble (voltage-dropping type) topology and be applied to the lower problem of pfc circuit power factor.
The high power factor converting device that the present invention proposes comprises alternating current input power supplying V
Ac, diode D
1～D
6, inductance L, output diode D
o, switching tube Q
1, switching tube Q
2, output capacitor C
oAnd load R
LoadWherein, alternating current input power supplying V
AcA terminating diode D
1Anode, diode D
3Negative electrode and diode D
5Negative electrode, alternating current input power supplying V
AcAnother terminating diode D
2Anode, diode D
4Negative electrode and diode D
6Negative electrode, diode D
1Negative electrode meet diode D
2Negative electrode, output diode D
oNegative electrode and an end of inductance L, another termination switching tube Q of inductance L
2Drain electrode, output capacitor C
oAnode and load R
LoadAn end, output capacitor C
oNegative terminal meet load R
LoadThe other end, switching tube Q
1Drain electrode and output diode D
oAnode, diode D
3Anode meet diode D
4Anode and switching tube Q
1Source electrode, diode D
5Anode meet diode D
6Anode and switching tube Q
2Source electrode.
Wherein, switching tube Q
1Can be dissimilar switching devices.
Wherein, switching tube Q
2Can be dissimilar switching devices.
Wherein, output capacitance C
oCan save in some application scenario.
Wherein, load R
LoadCan be ohmic load, LED load or late-class circuit.
The high power factor converting device that adopts the present invention to propose can reach following beneficial effect at least:
(1) has the two function and advantage of Buck circuit and Buck-boost circuit concurrently, both can realize the Buck-boost circuit function, can realize the Buck circuit function again, so circuit function is flexible through suitable control.
(2) when being applied to pfc circuit, relative conventional non-isolated Buck pfc circuit has promoted the power factor of input AC inlet wire, has reduced current harmonic content; Conventional non-isolated Buck-boost pfc circuit has promoted circuit working efficient relatively.
(3) relative conventional non-isolated Buck circuit has only increased by two diodes and a switching tube, and the switch control strategy is realized simple, and the overall cost of circuit increases the lifting that seldom but can realize aforesaid performance.
Description of drawings
Fig. 1 is a Buck pfc circuit system construction drawing;
Fig. 2 is a Buck pfc circuit oscillogram;
The high power factor converting device that Fig. 3 proposes for the present invention;
Fig. 4 a is the equivalent circuit diagram of the high power factor converting device operation mode I of the present invention's proposition;
The equivalent circuit diagram of the high power factor converting device operation mode II that Fig. 4 b proposes for the present invention, IV, VI, VIII;
Fig. 4 c is the equivalent circuit diagram of the high power factor converting device operation mode III of the present invention's proposition;
Fig. 4 d is the equivalent circuit diagram of the high power factor converting device operation mode V of the present invention's proposition;
Fig. 4 e is the equivalent circuit diagram of the high power factor converting device operation mode VII of the present invention's proposition;
The circuit waveform figure that Fig. 5 realizes for the high power factor converting device that the present invention proposes;
Fig. 6 is first specific embodiment of the present invention;
Fig. 7 is the main oscillogram in the specific embodiment shown in Figure 6;
Fig. 8 is second specific embodiment of the present invention.
Embodiment
As shown in Figure 3, the high power factor converting device topology that the present invention proposes comprises alternating current input power supplying V
Ac, diode D
1～D
6, inductance L, output diode D
o, switching tube Q
1, switching tube Q
2, output capacitor C
oAnd load R
LoadWherein, alternating current input power supplying V
AcA terminating diode D
1Anode, diode D
3Negative electrode and diode D
5Negative electrode, alternating current input power supplying V
AcAnother terminating diode D
2Anode, diode D
4Negative electrode and diode D
6Negative electrode, diode D
1Negative electrode meet diode D
2Negative electrode, output diode D
oNegative electrode and an end of inductance L, another termination switching tube Q of inductance L
2Drain electrode, output capacitor C
oAnode and load R
LoadAn end, output capacitor C
oNegative terminal meet load R
LoadThe other end, switching tube Q
1Drain electrode and output diode D
oAnode, diode D
3Anode meet diode D
4Anode and switching tube Q
1Source electrode, diode D
5Anode meet diode D
6Anode and switching tube Q
2Source electrode.
Wherein, switching tube Q
1Can be dissimilar switching devices, preferred metal-oxide-semiconductor, triode and IGBT etc.
Wherein, switching tube Q
2Can be dissimilar switching devices, preferred metal-oxide-semiconductor, triode and IGBT etc.
Wherein, output capacitance C
oCan save in some application scenario, be LED or battery like load.
Wherein, load R
LoadCan be ohmic load, LED load, battery or late-class circuit.
In a line voltage cycle, this circuit has eight kinds of different working states and five kinds of equivalent electric circuits, and equivalent electric circuit is as shown in Figure 3, shown in switching tube assembled state and input voltage, current relationship and the table 1.
Table 1 high power factor converting device of the present invention switching tube assembled state and input voltage, current relationship
(1) operation mode I:
As input voltage V
AcPlace's positive half period, V
AcAmplitude is lower than output voltage V
o, switching tube Q
2Conducting and switching tube Q
1During shutoff, high power factor converting device of the present invention is operated in the charge mode of forward Buckboost, i.e. operation mode I, equivalent electric circuit shown in Fig. 4 a, this moment input voltage V
AcThrough diode D
1And D
6Be added in the inductance L two ends, inductive current i
LRise.
(2) operation mode II:
As input voltage V
AcPlace's positive half period, V
AcAmplitude is lower than output voltage V
o, switching tube Q
2Turn-off and switching tube Q
1During shutoff, high power factor converting device of the present invention is operated in the afterflow pattern at forward Buckboost, i.e. operation mode II, and equivalent electric circuit is shown in Fig. 4 b.This moment diode D
oThe conducting afterflow, inductance L is in discharge condition, inductive current i
LDescend.
(3) operation mode III:
As input voltage V
AcPlace's positive half period, V
AcAmplitude specific output voltage V
oWhen high, switching tube Q
1Conducting and switching tube Q
2During shutoff, this converter is operated in the discharge mode of forward Buck pattern, i.e. operation mode III, and equivalent electric circuit is shown in 4c.This moment voltage (V
Ac-V
o) pass through D
1And D
4To inductance L charging, inductive current i
LRise.
(4) operation mode IV:
As input voltage V
AcPlace's positive half period, V
AcAmplitude specific output voltage V
oWhen high, switching tube Q
1Turn-off and switching tube Q
2During shutoff, this converter is operated in the charge mode of forward Buck pattern, i.e. operation mode IV, and equivalent electric circuit is shown in 4b.This moment diode D
oThe conducting afterflow, inductance L is in discharge condition, inductive current i
LDescend.
As input voltage V
AcWhen being in negative half-cycle; This converter has Buck-boost mode of operation and two kinds of mode of operations of Buck and four operation modes of operation mode VI～VIII equally; Corresponding equivalent electric circuit is shown in Fig. 4 b, Fig. 4 d and Fig. 4 e, and the detailed course of work no longer is repeated in this description here.
After adopting circuit of the present invention, can eliminate the Dead Time of input current waveform, improve the power factor of circuit, as shown in Figure 5.
Fig. 6 is a specific embodiment of the present invention, comprises main circuit topology of the present invention and control circuit.Wherein, main circuit comprises alternating current input power supplying V
Ac, diode D
1～D
6, inductance L, output diode D
o, switching tube Q
1, switching tube Q
2, output capacitor C
oAnd load R
LoadWherein, alternating current input power supplying V
AcA terminating diode D
1Anode, diode D
3Negative electrode and diode D
5Negative electrode, alternating current input power supplying V
AcAnother terminating diode D
2Anode, diode D
4Negative electrode and diode D
6Negative electrode, diode D
1Negative electrode meet diode D
2Negative electrode, output diode D
oNegative electrode and the former limit of inductance L end of the same name, the former limit different name termination switching tube Q of inductance L
2Drain electrode, output capacitor C
oAnode and load R
LoadAn end, output capacitor C
oNegative terminal meet load R
LoadThe other end, switching tube Q
1Drain electrode and output diode D
oAnode, diode D
3Anode meet diode D
4Anode and switching tube Q
1Source electrode, diode D
5Anode meet diode D
6Anode and switch close Q
2Source electrode, inductance L secondary end ground connection of the same name, inductance L secondary different name end output detection signal ZCD gives control circuit.Wherein control circuit comprises: V
InTesting circuit 501, output voltage V
oTesting circuit 502, phase detecting circuit 503, error amplifying circuit 504, inductive current zero cross detection circuit 505, PFC control circuit 506, logic and drive circuit 507 and inverter U
kFurther, phase detecting circuit 503 comprises comparator U
C3With benchmark V
Boundry, error is amplified network 504 and is comprised resistance R
f, capacitor C
f, error amplifier U
fWith benchmark V
Ref, inductive current zero cross detection circuit 505 comprises comparator U
C2With benchmark V
Dc, logic and drive circuit 507 comprise and door U
a, with the door U
b, drive circuit D
Rv1And drive circuit D
Rv2V wherein
In Testing circuit 501 mainly is used for detecting the voltage magnitude after the AC-input voltage rectification, V
InThe output of testing circuit 501 meets comparator U in the phase detecting circuit 503
C3Positive input terminal, comparator U
C3Negative input end meet benchmark V
Boundry, comparator U
C3Output V
PhMeet inverter U
kInput and logic and drive circuit 507 in door U
aAn input, inverter U
kThe output signal send into PFC control circuit 506 and connect logic and drive circuit 507 in door U
bAn input; Output voltage V
oTesting circuit 502 is used for obtaining output voltage V
oSignal; Output voltage V
oResistance R in the output termination error amplifying circuit 504 of testing circuit 502
fAn end, resistance R
fAnother termination amplifier U
fNegative input end and capacitor C
fAn end, amplifier U
fPositive input termination voltage reference V
Ref, capacitor C
fAnother termination amplifier U
fOutput, amplifier U
fThe output signal send into to PFC control circuit 506; Comparator U in the inductive current zero cross detection circuit 505
C2Negative terminal meet inductive current zero cross signal ZCD, comparator U
C2Positive termination benchmark V
Dc, comparator U
C2The output signal send into PFC control circuit 506; The output signal V of PFC control circuit 506
GReceive in logic and the drive circuit 507 with door U
aInput and with door U
bAn input; With door U
aThe driver connected D of output
Rv1Input, driver D
Rv1Output output drive signal V
G1Receive main circuit switch pipe Q
1Gate pole, with door U
bThe driver connected D of output
Rv2Input, driver D
Rv2Output output drive signal V
G2Receive main circuit switch pipe Q
2Gate pole.
The main waveform that control circuit shown in Figure 6 produces is as shown in Figure 7.Circuit working process shown in Figure 6 simply is described below: AC-input voltage V
AcAfter rectification, produce forward alternation voltage V
In, forward alternation voltage V
InThrough V
InSend into phase detecting circuit 503 behind the testing circuit 501 through comparator U
cWith the voltage reference V that sets
BoundryCompare, produce control signal V
Ph, wherein through setting V
BoundryCan set the critical voltage of Buck-boost pattern and Buck mode switch; Inductive current zero cross detection circuit 505 is judged the zero crossing of inductive current according to the auxiliary winding different name terminal voltage of the inductance L that detects, and outputting inductance current over-zero detection signal is given pfc controller 506; Logic and drive circuit 507 are according to control signal V
PhAnd the drive signal V of pfc controller 506 generations
GProduce switching tube Q
1With switching tube Q
2Drive signal V
G1And V
G2At V
PhBe low level interval, drive signal V
G1Be 0, switching tube Q
1Be in normal off status, drive signal V
G2Signal and V
GIdentical, control switch pipe Q
2Do not stop break-make, make main circuit be operated in the Buck-boost pattern; At V
PhBe the interval of high level, drive signal V
G2Be 0, switching tube Q
2Be in normal off status, drive signal V
G1Signal and V
GIdentical, control switch pipe Q
1Do not stop break-make, make main circuit be operated in the Buck pattern.Error is amplified network 504 with detected output voltage V
oThe benchmark V of signal and setting
RefCompare, when the output voltage V of feedback
oSignal is lower than benchmark V
RefThe time, error amplifier U
fOutput voltage rises, and makes the switching tube duty ratio increase through pfc controller; Otherwise, when the output voltage V of feedback
oSignal is lower than benchmark V
RefThe time, error amplifier U
fOutput voltage descends, and makes the duty ratio of switching tube reduce through pfc controller, thereby realizes the voltage stabilizing to output voltage.
The present invention not only can be used for constant voltage circuit, also can be used for constant-current circuit, and is like led driver etc., as shown in Figure 8.Difference embodiment illustrated in fig. 8 and embodiment illustrated in fig. 6 only is that load is LED, through gathering output current I
oTesting circuit 802 is gathered output current I
oSignal is used for feedback, thereby realizes the output constant current, and in addition, the main modular and the course of work no longer detail all with embodiment illustrated in fig. 6 similar here.
Claims of the present invention mainly are the main circuit structures that is used to limit and protect proposition.Circuit structure for the present invention's proposition; All equivalent transformations that spirit is done according to the present invention or modification; Or the different combinations mode of the various embodiments through each module, forming different specific embodiment etc., all should be encompassed within protection scope of the present invention.For the control mode of main circuit, those skilled in the art can have many modes to realize under the prerequisite of its spirit, and described in the specification is some practical implementation examples.The above-mentioned detailed description of the embodiment of the invention be not exhaustive or be used to limit the present invention to above-mentioned clear and definite in form.Above-mentioned with schematic purpose specific embodiment of the present invention and instance are described in, those skilled in the art will recognize that and can carry out various equivalent modifications within the scope of the invention.
The enlightenment that the present invention is provided here is not must be applied in the said system, can also be applied in other system.Can element and the effect of above-mentioned various embodiment be combined so that more embodiment to be provided.Can make amendment to the present invention according to above-mentioned detailed description, at above-mentioned declarative description specific embodiment of the present invention and having described in the anticipated optimal set pattern, no matter how detailed explanation appearred hereinbefore, also can be implemented in numerous ways the present invention.The details of foregoing circuit structure and control mode thereof is carried out in the details at it can carry out considerable variation, yet it still is included among the present invention disclosed herein.
Should be noted that as above-mentioned that employed specific term should not be used to be illustrated in when explanation some characteristic of the present invention or scheme defines this term here again with restriction of the present invention some certain features, characteristic or the scheme relevant with this term.In a word, should be with the terminological interpretation of in the claims of enclosing, using for the present invention not being limited to disclosed specific embodiment in the specification, only if above-mentioned detailed description part defines these terms clearly.Therefore, actual range of the present invention not only comprises the disclosed embodiments, also is included among claims.
Claims (4)
1. a high power factor converting device comprises alternating current input power supplying V
Ac, diode D
1, diode D
2, diode D
3, diode D
4, diode D
5, diode D
6, inductance L, output diode D
o, switching tube Q
1, switching tube Q
2, output capacitor C
oAnd load R
Load, it is characterized in that: alternating current input power supplying V
AcA terminating diode D
1Anode, diode D
3Negative electrode and diode D
5Negative electrode, alternating current input power supplying V
AcAnother terminating diode D
2Anode, diode D
4Negative electrode and diode D
6Negative electrode, diode D
1Negative electrode meet diode D
2Negative electrode, output diode D
oNegative electrode and an end of inductance L, another termination switching tube Q of inductance L
2Drain electrode, output capacitor C
oAnode and load R
LoadAn end, output capacitor C
oNegative terminal meet load R
LoadThe other end, switching tube Q
1Drain electrode and output diode D
oAnode, diode D
3Anode meet diode D
4Anode and switching tube Q
1Source electrode, diode D
5Anode meet diode D
6Anode and switching tube Q
2Source electrode.
2. a kind of high power factor converting device according to claim 1 is characterized in that: described switching tube Q
1With switching tube Q
2Be metal-oxide-semiconductor, triode or IGBT.
3. a kind of high power factor converting device according to claim 1 is characterized in that: load R
LoadBe ohmic load, LED, battery or late-class circuit.
4. a kind of high power factor converting device according to claim 3 is characterized in that: as load R
LoadDuring for LED or battery, output capacitance C
oCan save.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210146349.7A CN102684492B (en) | 2012-05-11 | 2012-05-11 | High power factor converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210146349.7A CN102684492B (en) | 2012-05-11 | 2012-05-11 | High power factor converter |
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| Publication Number | Publication Date |
|---|---|
| CN102684492A true CN102684492A (en) | 2012-09-19 |
| CN102684492B CN102684492B (en) | 2015-07-08 |
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710131A (en) * | 2012-06-13 | 2012-10-03 | 杭州士兰微电子股份有限公司 | Converter and driving method thereof and power factor correcting device comprising converter |
| CN103280964A (en) * | 2013-05-27 | 2013-09-04 | 奇瑞汽车股份有限公司 | Power factor correction circuit |
| CN103648202A (en) * | 2013-12-18 | 2014-03-19 | 矽力杰半导体技术(杭州)有限公司 | Active power factor correction control circuit, chip and LED (Light Emitting Diode) drive circuit |
| CN105722274A (en) * | 2013-12-18 | 2016-06-29 | 矽力杰半导体技术(杭州)有限公司 | Active power factor correction control circuit, chip and LED drive circuit |
| CN110138201A (en) * | 2018-02-09 | 2019-08-16 | 南京理工大学 | The realization device and method of BCM mode PFC converter unit PF value |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100080026A1 (en) * | 2008-10-01 | 2010-04-01 | Xiaoyang Zhang | Power factor correction circuit |
| CN101771346A (en) * | 2008-12-31 | 2010-07-07 | 聚积科技股份有限公司 | Single-stage high power factor isolating type AC to DC converter with leakage inductance energy loopback function |
| CN101834539A (en) * | 2010-05-27 | 2010-09-15 | 浙江大学 | High-efficiency AC/DC combined converter with wide output voltage range |
| CN201742599U (en) * | 2010-05-12 | 2011-02-09 | 英飞特电子（杭州）有限公司 | High power factor constant current driving circuit |
| US20110132899A1 (en) * | 2008-09-01 | 2011-06-09 | Mitsubishi Electric Corporation | Converter circuit and motor drive apparatus, air-conditioner, refrigerator, and induction heating cooker provided with the circuit |
| CN202949357U (en) * | 2012-11-20 | 2013-05-22 | 杭州电子科技大学 | High power factor converter |
-
2012
- 2012-05-11 CN CN201210146349.7A patent/CN102684492B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110132899A1 (en) * | 2008-09-01 | 2011-06-09 | Mitsubishi Electric Corporation | Converter circuit and motor drive apparatus, air-conditioner, refrigerator, and induction heating cooker provided with the circuit |
| US20100080026A1 (en) * | 2008-10-01 | 2010-04-01 | Xiaoyang Zhang | Power factor correction circuit |
| CN101771346A (en) * | 2008-12-31 | 2010-07-07 | 聚积科技股份有限公司 | Single-stage high power factor isolating type AC to DC converter with leakage inductance energy loopback function |
| CN201742599U (en) * | 2010-05-12 | 2011-02-09 | 英飞特电子（杭州）有限公司 | High power factor constant current driving circuit |
| CN101834539A (en) * | 2010-05-27 | 2010-09-15 | 浙江大学 | High-efficiency AC/DC combined converter with wide output voltage range |
| CN202949357U (en) * | 2012-11-20 | 2013-05-22 | 杭州电子科技大学 | High power factor converter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710131A (en) * | 2012-06-13 | 2012-10-03 | 杭州士兰微电子股份有限公司 | Converter and driving method thereof and power factor correcting device comprising converter |
| CN103280964A (en) * | 2013-05-27 | 2013-09-04 | 奇瑞汽车股份有限公司 | Power factor correction circuit |
| CN103280964B (en) * | 2013-05-27 | 2015-10-28 | 奇瑞汽车股份有限公司 | A kind of circuit of power factor correction |
| CN103648202A (en) * | 2013-12-18 | 2014-03-19 | 矽力杰半导体技术(杭州)有限公司 | Active power factor correction control circuit, chip and LED (Light Emitting Diode) drive circuit |
| CN105722274A (en) * | 2013-12-18 | 2016-06-29 | 矽力杰半导体技术(杭州)有限公司 | Active power factor correction control circuit, chip and LED drive circuit |
| CN105722274B (en) * | 2013-12-18 | 2019-03-19 | 矽力杰半导体技术(杭州)有限公司 | Active power factor correction control circuit, chip and LED drive circuit |
| CN110138201A (en) * | 2018-02-09 | 2019-08-16 | 南京理工大学 | The realization device and method of BCM mode PFC converter unit PF value |
| CN110138201B (en) * | 2018-02-09 | 2021-05-04 | 南京理工大学 | Device and method for realizing unit PF value of BCM mode PFC converter |
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| Publication number | Publication date |
|---|---|
| CN102684492B (en) | 2015-07-08 |
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