CN107395013A - Power generation circuit and its operating method - Google Patents
Power generation circuit and its operating method Download PDFInfo
- Publication number
- CN107395013A CN107395013A CN201610074967.3A CN201610074967A CN107395013A CN 107395013 A CN107395013 A CN 107395013A CN 201610074967 A CN201610074967 A CN 201610074967A CN 107395013 A CN107395013 A CN 107395013A
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- China
- Prior art keywords
- unit
- control signal
- underloading
- generation circuit
- power generation
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Abstract
The invention discloses a kind of power generation circuit and its operating method.A kind of power generation circuit, it has input and output end, input receives external power source, for output end to couple external loading, power generation circuit further includes bridge rectifier unit, inductance unit, first switch unit, diode, electric capacity, feedback divider, divider and control signal adjustment unit.Control signal adjustment unit couples with feedback divider, divider and first switch unit respectively, is to control signal to be produced after the signal out of the ordinary for receiving feedback divider and divider, wherein, when external loading is underloading, control signal is synchronous with external power source.
Description
Technical field
The invention relates to a kind of power generation circuit, can have in particular to one kind
Effect improves the power generation circuit and its operating method of conversion efficiency.
Background technology
Power supply circuit is provided for suitable voltage and coupled to power supply circuit
Electronic installation, electronic installation can be notebook computer, tablet PC, intelligent
Handset device, different electronic installations need different magnitudes of voltage.Power supply circuit
Output can be adjusted to the voltage of electronic installation according to the electronic installation currently coupled, and adjusted
Whole method is turning off or on to produce feedback voltage by control feedback switch, is made
Power supply circuit can adjust output voltage according to feedback voltage, and so known feedback switchs
The frequency or number turned off or on is fixation.
The content of the invention
In order to improve the conversion efficiency of power supply circuit, the present invention proposes a kind of power supply production
Raw circuit, power generation circuit have input and output end, and input receives outside
Power supply, output end further include bridge rectifier list to couple external loading power generation circuit
Member, inductance unit, first switch unit, diode, electric capacity, feedback divider,
Divider and control signal adjustment unit.Bridge rectifier unit is coupled to input,
Inductance unit its one end couples with bridge rectifier unit, first switch unit its one end and electricity
Feel the other end coupling of unit, its other end and a low voltage level couple, first switch
Unit to according to control signal decide whether turn on first switch unit, diode
One end and inductance unit couple, one end and diode and the output end coupling of electric capacity
Connect, and its other end couples with low voltage level, one end of feedback divider and diode
The other end coupling of unit, one end of divider and one end of inductance unit couple, control
Signal adjustment unit couples with feedback divider, divider and first switch unit respectively,
It is to control signal to be produced after the signal out of the ordinary for receiving feedback divider and divider, its
In, when external loading is underloading, control signal is synchronous with external power source.
In the preferred embodiment, above-mentioned control signal adjustment unit further includes
Feedback compensator, underloading detecting unit, phase detection unit, synchronous circuit, underloading frequency
Rate generation circuit, cline frequency generation circuit, signal generation unit and second switch list
Member.Feedback compensator couples with feedback divider, underloading detecting unit and feedback compensator
Coupling, phase detection unit couple with divider, synchronous circuit and phase detection unit coupling
Connecing, underloading frequency generating circuit couples with synchronous circuit and exports underloading FREQUENCY CONTROL signal,
Cline frequency generation circuit controls signal, signal generation unit to export a cline frequency
Coupled with first switch unit and feedback compensator, to produce control signal, second
Switch element produces electricity with underloading detecting unit, underloading frequency generating circuit, cline frequency
Road and signal generation unit coupling, it is to be determined according to the control of underloading detecting unit
Whether signal generation unit couples with underloading frequency generating circuit.
The present invention more proposes a kind of operating method of power generation circuit, power generation circuit
With input and output end, input to receive external power source, output end to
Coupling external loading simultaneously exports output voltage, and power generation circuit further includes first switch list
Member, control signal adjustment unit and bridge rectifier unit, control signal adjustment unit with
Bridge rectifier unit and the coupling of first switch unit, first switch unit and bridge rectifier
Unit couples, and decides whether to turn on first switch unit, its step according to control signal
Including：Control signal adjustment unit is set to judge whether external loading is underloading；When being judged as
It is that control signal adjustment unit makes control signal synchronous with external power source.
In the preferred embodiment, when being judged as YES, signal adjustment unit is controlled
The step for making control signal synchronous with external power source further includes：Make control signal adjustment unit
Judge the frequency, angle and position of external power source；Make control signal adjustment unit according to
Frequency, angle and the position of external power source produce control signal.
The control signal of the present invention is because can be same with the frequency, angle and position of external power source
Step, therefore control signal can be adjusted according to the demand of external loading, with less first switch
Energy needed for the acquirement of unit switching times, effectively improve the efficiency of power generation circuit.
For above and other objects of the present invention, feature and advantage can be become apparent,
Preferred embodiment cited below particularly simultaneously coordinates institute's accompanying drawings to be described below in detail.
Brief description of the drawings
Fig. 1 is the power generation circuit embodiment schematic diagram of the present invention.
Fig. 2A is the schematic diagram of control signal sequential embodiment one of the present invention.
Fig. 2 B are the schematic diagram of control signal sequential embodiment two of the present invention.
Fig. 2 C are the schematic diagram of control signal sequential embodiment three of the present invention.
Fig. 2 D are the control signal sequential example IV schematic diagram of the present invention.
Fig. 3 is the schematic diagram of control signal sequential embodiment five of the present invention.
Fig. 4 is the operation workflow embodiment schematic diagram of the present invention.
Embodiment
Referring to Fig. 1, Fig. 1 is the power generation circuit embodiment schematic diagram of the present invention,
Power generation circuit 10 has an input IN and output end OUT, input IN with
External power source 20 is coupled to receive external voltage, and external power source 20 can be AC power,
Output end OUT to be coupled with external loading, external loading can be notebook computer,
The electronic installations such as tablet PC, intelligent mobile phone (do not illustrate), power generation circuit 10
It is that external power source 20 is provided to the charge requirement according to different external loadings
Voltage conversion is suitable output voltage.
Power generation circuit 10 further includes bridge rectifier unit 11, inductance unit 12,
One switch element 13, diode 14, electric capacity 15, feedback divider 16, partial pressure
Device 17 and control signal adjustment unit 18.Bridge rectifier unit 11 and input IN
Coupling, is to receive the voltage that external power source 20 is provided, and the electricity of output first according to this
Press V1.Inductance unit 12 can be Inductive component, its one end and bridge rectifier unit 11
Coupling, is to receive above-mentioned first voltage V1, and export second voltage by the other end
V2.The first end of first switch unit 13 couples with one end of inductance unit 12, and first
Second end of switch element 13 couples with a low voltage level, and low voltage level can be connect
Ground voltage level, the 3rd end of first switch unit 13 receive control signal PWM, the
One switch element 13 decides whether to turn on according to control signal PWM.Diode 14
One end and the first end of first switch unit 13 and the other end coupling of inductance unit 12
Connect, one end of diode 14 receives second voltage V2 and exports the 3rd in the other end
Voltage V3.One end of electric capacity 15 couples with the other end of diode 14, electric capacity
15 other end couples with above-mentioned low voltage level, and electric capacity 15 is to store the 3rd
Voltage V3.One end of feedback divider 16 couples simultaneously with the other end of diode 14
Tertiary voltage V3 is received, feedback divider 16 is tertiary voltage V3 to be divided
Pressure, and the 4th voltage V4 after the other end exports partial pressure.One end of divider 17 with
One end coupling of inductance unit 12, is to receive above-mentioned first voltage V1, partial pressure
Device 17 be to by first voltage V1 carry out partial pressure, and in the other end export partial pressure after
5th voltage V5.Control signal adjustment unit 18 respectively with feedback divider 16, partial pressure
Device 17 and first switch unit 13 couple, and control signal adjustment unit 18 is to basis
The 4th above-mentioned voltage V4 and the 5th voltage V5 exports above-mentioned control signal PWM
To first switch unit 13.
Control signal adjustment unit 18 has further included feedback compensator 181, underloading detecting list
Member 182, phase detection unit 183, synchronous circuit 184, underloading frequency generating circuit 185,
Cline frequency generation circuit 186, signal generation unit 187 and second switch unit 188.
Feedback compensator 181 couples with feedback divider 16, is to receive the 4th above-mentioned electricity
Press V4, and signal S1 compared with the 4th voltage V4 is exported more afterwards with reference voltage.Gently
Carry detecting unit 182 to couple with feedback compensator 181, be to receive to compare signal S1
And according to compare the offset voltage information that signal S1 included judge external loading whether be
Underloading simultaneously exports judged result signal S2.Phase detection unit 183 and the coupling of divider 17
Connect, be to receive the 5th voltage V5, and judge the 5th voltage V5 frequency and angle
Degree.Synchronous circuit 184 couples with phase detection unit 183, is to receive the 5th electricity
Pressure V5 simultaneously judges that the current positions of the 5th voltage V5, such as the 5th voltage V5 are currently
Positioned at positions such as crest, trough, first transition or last transitions.Underloading frequency produces electricity
Road 185 couples with synchronous circuit 184 and second switch unit 188, is to same
Step circuit triggers 184 and according to the 5th voltage V5 frequency, angle and current location
Underloading FREQUENCY CONTROL signal L1 is exported to second switch unit 188.Cline frequency produces electricity
Road 186 couples with second switch unit 188, is to produce and export cline frequency control
Signal L2 processed is to second switch unit 188, and cline frequency control signal L2 is including advance
The fixed frequency information of setting.Second switch unit 188 and underloading detecting unit 182,
Underloading frequency generating circuit 185, cline frequency generation circuit 186 and signal produce single
Member 187 couples, and second switch unit 188 is to receive judged result signal S2, and
Second switch unit 188 is switched according to judged result signal S2, determines signal generation unit
187 couple with underloading frequency generating circuit 185 or cline frequency generation circuit 186.News
Number generation unit 187 and above-mentioned first switch unit 13 and second switch unit 188
Coupling, signal generation unit 187 can be pulse width modulation device, be to through the
Two switch elements 188 receive underloading frequency generating circuit 185 or cline frequency generation circuit
186 output signals and compare signal S1 to export above-mentioned control signal PWM,
Signal generation unit 187 can know whether needs compensation output electricity according to signal S1 is compared
Pressure, and need to compensate how many offset voltage to output voltage, and according to comparing signal S1
And underloading FREQUENCY CONTROL signal L1 or cline frequency control the signal L2 received is produced
Control signal PWM.
Illustrate the operation method of power generation circuit 10 below in conjunction with Fig. 1.First, outside
Portion's power supply 20 inputs external voltage to bridge rectifier unit by above-mentioned input IN
11, bridge rectifier unit 11 exports first voltage V1 according to this, and inductance unit 12 receives the
One voltage V1 simultaneously exports second voltage V2 according to this, and diode 14 receives the second electricity
Press V2 and export tertiary voltage V3 according to this, feedback divider 16 receives tertiary voltage
V3 simultaneously exports the 4th voltage V4 by partial pressure, and feedback compensator 181 is by the 4th voltage V4
Compare signal S1, underloading detecting unit compared with reference voltage and according to comparative result output
182 judge current external loading according to the offset voltage information that signal S1 included is compared
For underloading or heavy duty, when underloading detecting unit 182 judges current external load for underloading,
Second switch unit 188 can make signal generation unit 187 according to judged result signal S2
Coupled with underloading frequency generating circuit 185, when underloading detecting unit 182 is judged outside current
Section load is heavy duty, and second switch unit 188 can make news according to judged result signal S2
Number generation unit 187 couples with heavily loaded frequency generating circuit 186.Detecting phase list simultaneously
Member 183 receives the 5th above-mentioned voltage V5 and judges the 5th voltage V5 frequency and angle
Degree, synchronous circuit 184 then judge the current positions of the 5th voltage V5 and drive underloading frequency
Rate generation circuit produces underloading FREQUENCY CONTROL signal L1.Therefore when external loading is underloading
When, signal generation unit 187 included according to underloading FREQUENCY CONTROL signal L1 the 5th
Voltage V5 frequency, angle and current location information produce it is synchronous with the 5th voltage V5,
Control signal PWM namely synchronous with external power source 20, when external loading is heavy duty
When, frequency generating circuit 186 is then consolidated according to what heavily loaded FREQUENCY CONTROL signal L2 was included
Determine frequency and produce control signal PWM.
Fig. 2A to Fig. 2 D is external loading when being underloading, control signal PWM sequential
Embodiment schematic diagram, control signal PWM include pulse mode interval time T1, and
Pulse enable section T2, pulse mode interval time T1 are two pulse enable section T2
Mutual interval time, pulse enable section T2 gather together including multiple, made in Fig. 1
First switch unit 13 enters line number according to control signal PWM in pulse enable section T2
Secondary switch, VACInputted for external power source 20 to the external voltage of power generation circuit 10,
V5 is the 5th above-mentioned voltage.It please refer to Fig. 2A, pulse enable section in Fig. 2A
T2 can betide the 5th voltage V5 and outside according to underloading FREQUENCY CONTROL signal L1
Voltage VACCrest, that is, pulse enable section T2 and the 5th voltage V5 and outer
Portion's power supply 20 is synchronous, and due to the maximum that crest is the 5th voltage V5, therefore this is implemented
Example can just obtain institute with the less switching times of first switch unit 13 in a short time
The voltage needed.Next referring to Fig. 2 B and Fig. 2 C, pulse enable section T2 also may be used
Betide the 5th voltage V5 first transition or last transition, that is, pulse enable
Section T2 is synchronous with the 5th voltage V5 and external power source 20, although this embodiment needs
Required voltage is obtained with the more switching times of first switch unit 13, but can be reached
The effect of ZVT switching.In addition refer to Fig. 2 D, Fig. 2 D is with reference to Fig. 2 B
And Fig. 2 C, that is, pulse enable section T2 can also betide the 5th voltage V5 simultaneously
First transition and last transition.Next referring to Fig. 3, Fig. 3 is that external loading is
When heavily loaded, control signal PWM sequential embodiment schematic diagram, it can substantially be seen by Fig. 3
Go out, control signal PWM pulse mode interval time T1 and pulse enable section
T2 determines that pulse enable section T2 is sent out to be simple according to fixed frequency set in advance
The raw time.
According to above-mentioned content, can more converge it is whole go out power generation circuit 10 operating method,
As shown in figure 4, its step includes：Feedback compensator 181 is set to receive the 4th above-mentioned electricity
V4 is pressed, and ratio is exported by the 4th voltage V4 compared with reference voltage and according to comparative result
Compared with signal S1 (steps 401)；Underloading detecting unit 182 is set to judge according to signal S1 is compared
Whether external loading is underloading (step 402)；When being judged as YES, make signal generation unit
187 couple (step 403) with underloading frequency generating circuit 185；When being judged as NO, make news
Number generation unit 187 couples (step 404) with cline frequency generation circuit 186；Signal produces
Raw unit 187 produces control signal PWM (steps 405) according to signal is received, wherein,
If external loading is underloading, signal generation unit 187 is according to underloading FREQUENCY CONTROL signal L1
Control signal PWM is produced, and controls signal PWM sequential and external power source 20 same
Step, anti-, if external loading is heavy duty, signal generation unit 187 is according to heavily loaded frequency
Signal L2 is controlled to produce control signal PWM, and it is solid to control signal PWM sequential
Determine frequency.
It is comprehensive described above, it is negative in outside due to the power generation circuit embodiment of the present invention
Carry for underloading when, the control signal PWM synchronous with external power source can be produced, make first
Switch element 13 can synchronously be opened with external power source and obtain required voltage, not only make first
Switch element 13 can reduce number of operations and energy loss, more can reach ZVT
The effect of switching, significantly improve the conversion efficiency of power generation circuit.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to this
Invention, it is any to be familiar with this those skilled in the art, without departing from the spirit and scope of the present invention, when
A little change and retouching can be made, therefore it is claim institute that protection scope of the present invention, which is worked as,
The scope defined is defined.
Claims (7)
1. a kind of power generation circuit, there is an input and an output end, the input
To receive an external power source, for the output end to couple an external loading, it is special
Sign is to include：
One bridge rectifier unit, is coupled to the input；
One inductance unit, its one end couple with the bridge rectifier unit；
One first switch unit, the other end of its one end and the inductance unit couple, and its is another
One end couples with a low voltage level, is decided whether according to a control signal (PWM)
Turn on the first switch unit；
One diode, its one end couple with the inductance unit；
One electric capacity, its one end couple simultaneously with the diode and the output end, and its is another
One end couples with the low voltage level；
One feedback divider, its one end and the other end of the diode couple；
One divider, the one end of its one end and the inductance unit couple；And
One control signal adjustment unit, its respectively with the feedback divider, the divider and
The first switch unit couples, and is to receive feedback divider and the partial pressure to out of the ordinary
The control signal is produced after the signal of device；
Wherein, when the external loading is underloading, the control signal and the external power source are same
Step.
2. power generation circuit as claimed in claim 1, it is characterised in that the control signal
Adjustment unit includes：
One feedback compensator, coupled with the feedback divider；
One underloading detecting unit, coupled with the feedback compensator；
One phase detection unit, coupled with the divider；
One synchronous circuit, coupled with the phase detection unit；
One underloading frequency generating circuit, coupled with the synchronous circuit, be that to export one light
Carry FREQUENCY CONTROL signal；
One cline frequency generation circuit, to export cline frequency control signal；
One signal generation unit, with the first switch unit and the feedback compensator coupling
Connect, be to produce the control signal；And
One second switch unit, with the underloading detecting unit, the underloading frequency generating circuit,
The cline frequency generation circuit and signal generation unit coupling, are to basis
The control of the underloading detecting unit determine the signal generation unit whether with the underloading
Frequency generating circuit couples.
3. power generation circuit as claimed in claim 2, it is characterised in that the control signal
Including a pulse mode interval time, the pulse mode interval time includes a pulse
Enable section.
4. power generation circuit as claimed in claim 3, it is characterised in that the signal produces
Unit is pulse width modulation device.
5. a kind of operating method of power generation circuit, the power generation circuit has an input
End and an output end, the input is to receive an external power source, the output end
To couple an external loading and export an output voltage, the power generation circuit is more
Including a first switch unit, a control signal adjustment unit and a bridge rectifier
Unit, the control signal adjustment unit and the bridge rectifier unit and this first open
Unit coupling is closed, the first switch unit couples with the bridge rectifier unit, and root
Decide whether to turn on the first switch unit according to a control signal, it is characterised in that step
Suddenly include：
The control signal adjustment unit is set to judge whether the external loading is underloading；And
When being judged as YES, the control signal adjustment unit makes the control signal and the external electrical
Source is synchronous.
6. the operating method of power generation circuit as claimed in claim 5, it is characterised in that
The control signal adjustment unit is set to judge the step of whether external loading is underloading more
Including：
Make the control signal adjustment unit compare the output voltage and a reference voltage with
Judge whether the external loading is underloading.
7. the operating method of power generation circuit as claimed in claim 5, it is characterised in that
When being judged as YES, the control signal adjustment unit makes the control signal and the external electrical
The synchronous step in source further includes：
The control signal adjustment unit is set to judge the frequency, angle and position of the external power source
Put；
Make frequency, angle and position of the control signal adjustment unit according to the external power source
Put and produce the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610074967.3A CN107395013A (en) | 2016-05-17 | 2016-05-17 | Power generation circuit and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610074967.3A CN107395013A (en) | 2016-05-17 | 2016-05-17 | Power generation circuit and its operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107395013A true CN107395013A (en) | 2017-11-24 |
Family
ID=60337657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610074967.3A Withdrawn CN107395013A (en) | 2016-05-17 | 2016-05-17 | Power generation circuit and its operating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107395013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707316A (en) * | 2023-08-02 | 2023-09-05 | 艾科微电子(深圳)有限公司 | Control method of asymmetric half-bridge power supply |
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|---|---|---|---|---|
| US20100156509A1 (en) * | 2008-12-19 | 2010-06-24 | Samsung Electro-Mechanics Co., Ltd. | Switching mode power supply for reducing standby power |
| US20130043846A1 (en) * | 2011-08-16 | 2013-02-21 | Matthew Thomas Murdock | Methods and apparatus to improve power factor at light-load |
| CN104242660A (en) * | 2013-06-10 | 2014-12-24 | 索尼公司 | Switching power supply device, switching power supply control method and electronic apparatus |
| CN105071649A (en) * | 2015-08-10 | 2015-11-18 | 电子科技大学 | Full-digital power factor correction circuit capable of carrying out switching frequency modulation |
| CN105450054A (en) * | 2014-06-26 | 2016-03-30 | 欧普照明股份有限公司 | PFC (power factor correction) circuit with built-in auxiliary power circuit, and control method and device for PFC circuit |
-
2016
- 2016-05-17 CN CN201610074967.3A patent/CN107395013A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100156509A1 (en) * | 2008-12-19 | 2010-06-24 | Samsung Electro-Mechanics Co., Ltd. | Switching mode power supply for reducing standby power |
| US20130043846A1 (en) * | 2011-08-16 | 2013-02-21 | Matthew Thomas Murdock | Methods and apparatus to improve power factor at light-load |
| CN104242660A (en) * | 2013-06-10 | 2014-12-24 | 索尼公司 | Switching power supply device, switching power supply control method and electronic apparatus |
| CN105450054A (en) * | 2014-06-26 | 2016-03-30 | 欧普照明股份有限公司 | PFC (power factor correction) circuit with built-in auxiliary power circuit, and control method and device for PFC circuit |
| CN105071649A (en) * | 2015-08-10 | 2015-11-18 | 电子科技大学 | Full-digital power factor correction circuit capable of carrying out switching frequency modulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707316A (en) * | 2023-08-02 | 2023-09-05 | 艾科微电子(深圳)有限公司 | Control method of asymmetric half-bridge power supply |
| CN116707316B (en) * | 2023-08-02 | 2024-02-27 | 艾科微电子(深圳)有限公司 | Control method of asymmetric half-bridge power supply |
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