CN101908819A - Surge suppression circuit - Google Patents
Surge suppression circuit Download PDFInfo
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- CN101908819A CN101908819A CN2010102186539A CN201010218653A CN101908819A CN 101908819 A CN101908819 A CN 101908819A CN 2010102186539 A CN2010102186539 A CN 2010102186539A CN 201010218653 A CN201010218653 A CN 201010218653A CN 101908819 A CN101908819 A CN 101908819A
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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
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Abstract
The invention provides a surge suppression circuit which comprises a first resistor, a first switching tube and a second switching tube, wherein the first end of the first resistor is connected with the negative output end of a rectifier in a power factor correction circuit, and the second end of the first resistor is grounded; the first end and the second end of the first switching tube are respectively connected with the first end and the second end of the first resistor, the control end of the first switching tube is connected with the first end of the first switching tube through a second resistor and is connected with the first end of the second switching tube through a third resistor; and the second end of the second switching tube is connected with a controller through a fifth resistor, the control end of the second switching tube is grounded, the second end of the second switching tube is connected with the control end of the second switching tube through a fourth resistor, and the second end of the second switching tube is also connected with the control end of the second switching tube through a first capacitor.
Description
Technical field
The invention belongs to field of switch power, relate in particular to a kind of surge restraint circuit that is applied to circuit of power factor correction.
Background technology
Switching Power Supply is used more and more wider in field of power supplies greatly with its efficient height, power density.In order to satisfy the requirement of power factor and harmonic content, present Switching Power Supply all needs to install additional PFC (PowerFactor Correction, power factor correction) circuit.After being installed in the Switching Power Supply, the AC-DC converter in the pfc circuit can produce excessive surge current when starting, and need take suitable measure to suppress surge current.
The method that suppresses surge current at present is to seal in suitable surge to suppress resistance in the loop of pfc circuit, to reduce the size of surge current, the surge that seals in the loop then suppresses resistance meeting consumed power, the conversion efficiency of pfc circuit is reduced, in order to prevent the generation of this phenomenon, when the pfc circuit operate as normal, surge is suppressed resistance and carry out short circuit to improve the conversion efficiency of pfc circuit.In order to realize with the surge restraint circuit short circuit, a kind of scheme that is easier to realize is to suppress the two ends electronic switch in parallel of resistance at surge, and surge suppresses the negative output terminal that resistance is connected on pfc circuit, but when producing surge current, a very high peak voltage will be born in the two ends of electronic switch, cause forming very high voltage difference between the reference earth terminal of control circuit and the electronic switch controlled stage, cause to puncture electronic switch and cause electronic switch to damage.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of surge restraint circuit, the components and parts that cause surge to suppress in the resistance in the time of can preventing to produce surge current damage.
For achieving the above object, the invention provides a kind of surge restraint circuit, comprise first resistance, first of described first resistance terminates at the negative output terminal of the rectifier in the circuit of power factor correction, the second end ground connection of first resistance; Also comprise first switching tube and second switch pipe, first end of described first switching tube and second end are connected first end and second end of described first resistance respectively, described first control end of switching tube is connected with first end of described first switching tube by second resistance, described first control end of switching tube is connected with first end of described second switch pipe by the 3rd resistance, second end of second switch pipe links to each other with controller by the 5th resistance, the control end ground connection of described second switch pipe, described second switch pipe second end connects the control end of second switch pipe by the 4th resistance, second end of described second switch pipe also connects the control end of second switch pipe by first electric capacity, described controller is used for when circuit of power factor correction is started shooting, output makes the signal that first end of second switch pipe and second end disconnect, when described circuit of power factor correction operate as normal, output makes first end and the logical signal of second termination of second switch pipe
Preferably, also comprise second electric capacity, described second electric capacity is connected in parallel between first control end of switching tube and first end.
Preferably, described first switching tube is a N type metal-oxide-semiconductor, and first end of described first switching tube is the source electrode of N type metal-oxide-semiconductor, and second end is the drain electrode of N type metal-oxide-semiconductor, and control end is the grid of N type metal-oxide-semiconductor.
Preferably, described second switch pipe is a P type metal-oxide-semiconductor, and first end of described second switch pipe is the drain electrode of P type metal-oxide-semiconductor, and second end is the source electrode of P type metal-oxide-semiconductor, and control end is the grid of P type metal-oxide-semiconductor.
Preferably, the signal that disconnects of described first end that makes the second switch pipe and second end is specially: make the source electrode of described P type metal-oxide-semiconductor and the signal that drain electrode disconnects;
Described first end that makes the second switch pipe and the logical signal of second termination are specially: make the source electrode of described P type metal-oxide-semiconductor and the signal of drain electrode conducting.
Preferably, described first switching tube is a NPN type triode, and first end of described first switching tube is the emitter of NPN type triode, and second end is the collector electrode of NPN type triode, and control end is the base stage of NPN type triode.
Preferably, described second switch pipe is the positive-negative-positive triode, and first end of described second switch pipe is the collector electrode of positive-negative-positive triode, and second end is the emitter of positive-negative-positive triode, and control end is the base stage of positive-negative-positive triode.
Preferably, described first end of second switch pipe and the signal that second end disconnects of making is specially: the signal that makes described positive-negative-positive triode shutoff;
Described first end of second switch pipe and the logical signal of second termination of making is specially: the signal that makes the conducting of described positive-negative-positive triode.
The surge restraint circuit that provides by the embodiment of the invention, when pfc circuit is opened, first end of the first switching tube K1 and second end disconnect, and the resistance R S1 that wins is sealed in the pfc circuit, thereby the surge that suppresses to produce in the loop when pfc circuit is opened suppresses electric current; In addition because the effect of second switch pipe K2, make when pfc circuit is opened, second switch pipe K2 disconnects its first end and second end, thereby the control end of the first switching tube K1 can't be realized being electrically connected with controller 10, can avoid between the control end of the first switching tube K1 and first end, producing excessive voltage difference, prevent that the first switching tube K1 from puncturing.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of an embodiment of surge restraint circuit provided by the invention;
Fig. 2 is the schematic diagram of another embodiment of surge restraint circuit provided by the invention;
Fig. 3 is the schematic diagram of another embodiment of surge restraint circuit provided by the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the schematic diagram of an embodiment of surge restraint circuit provided by the invention and connected pfc circuit, and pfc circuit comprises rectifier (adopting rectifier bridge BR1 among the figure), inlet filter capacitor C1, main switch Q1, rectifying tube D2, output alminium electrolytic condenser C3.
Surge restraint circuit in the present embodiment is connected on the negative output terminal of the rectifier in the pfc circuit.Particularly, surge restraint circuit comprises one first resistance R S1, and this first resistance R S1 is used for sealing in the surge current of loop to suppress to produce when pfc circuit is started shooting of pfc circuit.The negative output terminal of the rectifier in first end of the first resistance R S1 and the pfc circuit is connected the second end ground connection of the first resistance R S1.
In addition, surge restraint circuit in the present embodiment also comprises the first switching tube K1 and second switch pipe K2, wherein, first end of the first switching tube K1 and second end are connected first end and second end of the first resistance R S1 respectively, the control end of the first switching tube K1 is connected with first end of the first switching tube K1 by second resistance R 2, the control end of the first switching tube K1 also is connected with first end of second switch pipe K2 by the 3rd resistance R 3, second end of second switch pipe K2 is connected with controller 10 by the 5th resistance R 5, the control end ground connection of second switch pipe K2, second end of second switch pipe K2 is by the control end of the 4th resistance R 4 connection second switch pipe K2, and second end of second switch pipe K2 also connects the control end of second switch pipe K2 by first capacitor C 5.Whether controller 10 detects pfc circuit and starts shooting, when detecting the pfc circuit start, controller 10 output makes first end of second switch pipe K2 and the signal that second end disconnects each other, and when the PFC operate as normal, output makes first end and the logical signal of second termination of second switch pipe K2.In practice, above-mentioned first end of second switch pipe K2 and the signal that second end disconnects each other of making can be low level, makes that first end of second switch pipe K2 and the logical signal of second termination can be high level.
Like this, when pfc circuit is opened, the signal of controller 10 outputs makes first end of second switch pipe K2 and second end disconnect each other, be not difficult to draw, first end of the first switching tube K1 and second end also disconnect each other, this moment, the first resistance R S1 worked in pfc circuit, thus the surge current that the inhibition pfc circuit produced in the loop when opening.
In addition, when surge current flows through the first resistance R S1, the both end voltage difference of the first resistance R S1 is higher, if controller 10 is directly linked to each other with the control end of the first switching tube K1, when producing surge current, difference between the voltage magnitude of the control signal of the voltage of first end of the first switching tube K1 and controller 10 outputs is bigger, thereby first end of the first switching tube K1 and the voltage difference between the control end are bigger, so puncture between the as easy as rolling off a log control end that causes the first switching tube K1 and first end.Therefore in this enforcement, second switch pipe K2 also is set between the first switching tube K1 and the controller 10, when pfc circuit is opened (promptly producing surge current), second switch pipe K2 disconnects first end and second end, make the control end of the first switching tube K1 realize being electrically connected with controller 10, can avoid between the control end of the first switching tube K1 and first end, producing excessive voltage difference, prevent that the first switching tube K1 from puncturing.
When the PFC operate as normal, after promptly the surge current that produces when pfc circuit is started shooting has disappeared in the loop, the signal of controller 10 outputs makes first end of second switch pipe K2 and second termination lead to, this moment, first end and second end of the first switching tube K1 were also connected, thereby the first switching tube K1 avoids the first resistance R S1 short circuit to be used for suppressing the first resistance R S1 of surge current still at the loop of pfc circuit loss power when the pfc circuit operate as normal.As seen, the first switching tube K1 role is whether the control first resistance R S1 seals in the pfc circuit loop, and second switch pipe K2 role is being electrically connected between the control first switching tube K1 and the controller 10.
In addition, by the 4th resistance R 4 and first capacitor C 5, when can be implemented in controller 10 output and making the logical signal of first end of second switch pipe K2 and second termination, make and slowly connect between first end of second switch pipe K2 and second end, thereby the voltage of the control end of the switching tube K1 that wins is slowly risen, first end of the switching tube K1 that wins and second end are slowly connected.For first end that further slows down the first switching tube K1 and the logical speed of second termination, preferably, second capacitor C 4 also in parallel between the control end of the first switching tube K1 and first end.
In practice, above-mentioned switching tube can be a triode, also can be metal-oxide-semiconductor, below specifies respectively.
Fig. 2 is the schematic diagram of another embodiment of surge restraint circuit provided by the invention, and this surge restraint circuit comprises the first resistance R S1, and this first resistance R S1 is used for sealing in the surge current of loop to suppress to produce when pfc circuit is started shooting of pfc circuit.The negative output terminal of the rectifier in first end of the first resistance R S1 and the pfc circuit is connected the second end ground connection of the first resistance R S1.
In addition, surge restraint circuit in the present embodiment also comprises a N type metal-oxide-semiconductor 11 and a P type metal-oxide-semiconductor 12, wherein the source electrode of N type metal-oxide-semiconductor 11 is connected first end and second end of the first resistance R S1 respectively with draining, and the grid of N type metal-oxide-semiconductor 11 is connected with the source electrode of N type metal-oxide-semiconductor 11 by second resistance R 2.The grid of N type metal-oxide-semiconductor 11 also links to each other with the drain electrode of P type metal-oxide-semiconductor 12 by the 3rd resistance R 3, the grounded-grid of P type metal-oxide-semiconductor 12, and the source electrode of P type metal-oxide-semiconductor 12 is connected with controller 10 by the 5th resistance R 5.The source electrode of P type metal-oxide-semiconductor 12 is by the grid of the 4th resistance R 4 connection P type metal-oxide-semiconductors 12, and the source electrode of P type metal-oxide-semiconductor 12 also connects the grid of P type metal-oxide-semiconductors 12 by first capacitor C 5.Whether controller 10 detects pfc circuit and starts shooting, when detecting the pfc circuit start, controller 10 output makes the source electrode of P type metal-oxide-semiconductor 12 and the signal that drain electrode disconnects, and when the pfc circuit operate as normal, controller 10 outputs make the source electrode of P type metal-oxide-semiconductor 12 and the signal of drain electrode conducting.
Like this, when pfc circuit is opened, the signal of controller 10 outputs makes the drain electrode of P type metal-oxide-semiconductor 12 and source electrode disconnect, thereby the source electrode of N type metal-oxide-semiconductor 11 and drain electrode also disconnect, this moment, the first resistance R S1 sealed in the loop of pfc circuit, in pfc circuit, work, thus the surge current that the inhibition pfc circuit produced in the loop when opening.Because when surge current produces, disconnect between the grid of controller 10 and N type metal-oxide-semiconductor 11, so avoided because of surge current produces excessive voltage difference between the grid of N type metal-oxide-semiconductor 11 and source electrode, prevented between the grid of N type metal-oxide-semiconductor 11 and the source electrode breakdown.
When the pfc circuit operate as normal, after promptly the surge current that produces when pfc circuit is started shooting has disappeared in the loop, the signal of controller 10 outputs makes the source electrode of P type metal-oxide-semiconductor 12 and drain electrode connect, the source electrode of N type metal-oxide-semiconductor 11 and the also conducting that drains at this moment, thereby N type metal-oxide-semiconductor 11 is with the first resistance R S1 short circuit, avoid when the pfc circuit operate as normal, the first resistance R S1 is loss power in the loop of pfc circuit still.As seen, the effect of N type metal-oxide-semiconductor 11 is whether the control first resistance R S1 seals in the pfc circuit loop, the effect of P type metal-oxide-semiconductor 12 are control N type metal-oxide-semiconductors 11 with controller 11 between be electrically connected.
In addition, by the 4th resistance R 4 and first capacitor C 5, when can be implemented in the signal that controller output makes the source electrode of P type metal-oxide-semiconductor 12 and drain electrode conducting, make the source electrode and the drain electrode of P type metal-oxide-semiconductor 12 slowly connect, thereby make the voltage of grid of N type metal-oxide-semiconductor 11 slowly rise, further make the source electrode of N type metal-oxide-semiconductor 11 and drain electrode slowly connect.For the speed of connecting between the source electrode that further slows down N type metal-oxide-semiconductor 11 and the drain electrode, preferably, second capacitor C 4 also in parallel between the grid of N type metal-oxide-semiconductor 11 and source electrode.
Fig. 3 is the schematic diagram of another embodiment of surge restraint circuit provided by the invention, and this surge restraint circuit comprises the first resistance R S1, and this first resistance R S1 is used for sealing in the surge current of loop to suppress to produce when pfc circuit is started shooting of pfc circuit.The negative output terminal of the rectifier in first end of the first resistance R S1 and the pfc circuit is connected the second end ground connection of the first resistance R S1.
In addition, the surge restraint circuit in the present embodiment also comprises a NPN triode 13 and PNP triode 14.Wherein, the collector and emitter of NPN triode 13 connects first end and second end of the first resistance R S1 respectively, and the base stage of NPN triode 13 is connected with the collector electrode of NPN triode 13 by second resistance R 2.The base stage of NPN triode 13 also is connected with the collector electrode of PNP triode 14 by the 3rd resistance R 3, the base earth of PNP triode 14, the emitter of PNP triode 14 links to each other with controller 10 by the 5th resistance R 5, the emitter of PNP triode 14 is by the base stage of the 4th resistance R 4 connection PNP triodes 14, and the emitter of PNP triode 14 also connects the base stage of PNP triodes 14 by first capacitor C 5.Whether controller 10 detects pfc circuit and starts shooting, when detecting the pfc circuit start, and the signal that controller 10 outputs make 14 shutoffs of PNP triode, when the pfc circuit operate as normal, the signal that controller 10 outputs make 14 conductings of PNP triode.
Like this, when pfc circuit is opened, the signal of controller 10 outputs makes PNP triode 14 turn-off, thereby NPN triode 13 also turn-offs, this moment, the first resistance R S1 sealed in the loop of pfc circuit, in pfc circuit, work, thus the surge current that the inhibition pfc circuit produced in the loop when opening.Because when surge current produces, disconnect between the base stage of controller 10 and NPN triode 13, so avoided preventing that because of surge current excessive voltage difference of generation between the base stage of NPN triode 13 and emitter NPN triode 13 is breakdown.
When the pfc circuit operate as normal, after promptly the surge current that produces when pfc circuit is started shooting has disappeared in the loop, the signal of controller 10 output makes 14 conductings of PNP triode, NPN triode 13 also conductings this moment, thereby NPN triode 13 is with the first resistance R S1 short circuit, avoid when the pfc circuit operate as normal, the first resistance R S1 is loss power in the loop of pfc circuit still.As seen, the effect of NPN triode 13 is whether the control first resistance R S1 seals in the pfc circuit loop, the effect of PNP triode 14 are control N type metal-oxide-semiconductors 11 with controller 11 between be electrically connected.
In addition, by the 4th resistance R 4 and first capacitor C 5, when can be implemented in the signal that controller output makes 14 conductings of PNP triode, make the 14 slow conductings of PNP triode, thereby make the base voltage of NPN triode 13 slowly rise, further make the 13 slow conductings of NPN triode.In order further to slow down the speed of NPN triode 13 conductings, preferably, second capacitor C 4 also in parallel between the base stage of NPN triode 13 and emitter.
Need explanation to be, can also be that first switching tube and second switch pipe are elected N type metal-oxide-semiconductor and PNP triode or first switching tube and second switch pipe respectively as and elected NPN triode and P type metal-oxide-semiconductor respectively as in the surge restraint circuit provided by the invention, such scheme all can be realized purpose of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a surge restraint circuit is characterized in that, comprises first resistance, and first of described first resistance terminates at the negative output terminal of the rectifier in the circuit of power factor correction, the second end ground connection of first resistance; Also comprise first switching tube and second switch pipe, first end of described first switching tube and second end are connected first end and second end of described first resistance respectively, described first control end of switching tube is connected with first end of described first switching tube by second resistance, described first control end of switching tube is connected with first end of described second switch pipe by the 3rd resistance, second end of second switch pipe links to each other with controller by the 5th resistance, the control end ground connection of described second switch pipe, described second switch pipe second end connects the control end of second switch pipe by the 4th resistance, second end of described second switch pipe also connects the control end of second switch pipe by first electric capacity, described controller is used for when circuit of power factor correction is started shooting, output makes the signal that first end of second switch pipe and second end disconnect, when described circuit of power factor correction operate as normal, output makes first end and the logical signal of second termination of second switch pipe.
2. surge restraint circuit according to claim 1 is characterized in that, also comprises second electric capacity, and described second electric capacity is connected in parallel between first control end of switching tube and first end.
3. surge restraint circuit according to claim 1 and 2 is characterized in that, described first switching tube is a N type metal-oxide-semiconductor, and first end of described first switching tube is the source electrode of N type metal-oxide-semiconductor, and second end is the drain electrode of N type metal-oxide-semiconductor, and control end is the grid of N type metal-oxide-semiconductor.
4. surge restraint circuit according to claim 1 and 2 is characterized in that, described second switch pipe is a P type metal-oxide-semiconductor, and first end of described second switch pipe is the drain electrode of P type metal-oxide-semiconductor, and second end is the source electrode of P type metal-oxide-semiconductor, and control end is the grid of P type metal-oxide-semiconductor.
5. surge restraint circuit according to claim 4 is characterized in that, the signal that described first end that makes the second switch pipe and second end disconnect is specially: make the source electrode of described P type metal-oxide-semiconductor and the signal that drain electrode disconnects;
Described first end that makes the second switch pipe and the logical signal of second termination are specially: make the source electrode of described P type metal-oxide-semiconductor and the signal of drain electrode conducting.
6. surge restraint circuit according to claim 1 and 2, it is characterized in that described first switching tube is a NPN type triode, first end of described first switching tube is the emitter of NPN type triode, second end is the collector electrode of NPN type triode, and control end is the base stage of NPN type triode.
7. surge restraint circuit according to claim 1 and 2, it is characterized in that described second switch pipe is the positive-negative-positive triode, first end of described second switch pipe is the collector electrode of positive-negative-positive triode, second end is the emitter of positive-negative-positive triode, and control end is the base stage of positive-negative-positive triode.
8. surge restraint circuit according to claim 7 is characterized in that, described first end of second switch pipe and the signal that second end disconnects of making is specially: the signal that makes described positive-negative-positive triode shutoff;
Described first end of second switch pipe and the logical signal of second termination of making is specially: the signal that makes the conducting of described positive-negative-positive triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102186539A CN101908819B (en) | 2010-07-06 | 2010-07-06 | Surge suppression circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102186539A CN101908819B (en) | 2010-07-06 | 2010-07-06 | Surge suppression circuit |
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| Publication Number | Publication Date |
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| CN101908819A true CN101908819A (en) | 2010-12-08 |
| CN101908819B CN101908819B (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102186539A Active CN101908819B (en) | 2010-07-06 | 2010-07-06 | Surge suppression circuit |
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| CN (1) | CN101908819B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983732A (en) * | 2012-11-26 | 2013-03-20 | 福州欣联达电子科技有限公司 | Average current Power Factor Correction (PFC) circuit capable of preventing starting current from damaging sample resistor |
| CN104506027A (en) * | 2014-12-26 | 2015-04-08 | 广东威创视讯科技股份有限公司 | Output voltage overshoot suppresser for PFC (power factor correction) circuit and power supply circuit with same |
| CN105429449A (en) * | 2015-12-09 | 2016-03-23 | 深圳欧陆通电子有限公司 | Anti-surge switching power supply and anti-surge circuit |
| CN108336722A (en) * | 2018-04-11 | 2018-07-27 | 四川升华电源科技有限公司 | Surge restraint circuit in parallel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461955A (en) * | 1982-06-30 | 1984-07-24 | The United States Of America As Represented By The Secretary Of The Air Force | Isolated load switching with surge suppression |
| CN2650393Y (en) * | 2003-09-16 | 2004-10-20 | 广州金升阳科技有限公司 | Isolated self-oscillation reverse exciting inverter |
| CN2838140Y (en) * | 2005-08-25 | 2006-11-15 | 是蓉珠 | Vehicular DC-DC converter |
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2010
- 2010-07-06 CN CN2010102186539A patent/CN101908819B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461955A (en) * | 1982-06-30 | 1984-07-24 | The United States Of America As Represented By The Secretary Of The Air Force | Isolated load switching with surge suppression |
| CN2650393Y (en) * | 2003-09-16 | 2004-10-20 | 广州金升阳科技有限公司 | Isolated self-oscillation reverse exciting inverter |
| CN2838140Y (en) * | 2005-08-25 | 2006-11-15 | 是蓉珠 | Vehicular DC-DC converter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983732A (en) * | 2012-11-26 | 2013-03-20 | 福州欣联达电子科技有限公司 | Average current Power Factor Correction (PFC) circuit capable of preventing starting current from damaging sample resistor |
| CN104506027A (en) * | 2014-12-26 | 2015-04-08 | 广东威创视讯科技股份有限公司 | Output voltage overshoot suppresser for PFC (power factor correction) circuit and power supply circuit with same |
| CN104506027B (en) * | 2014-12-26 | 2017-05-17 | 广东威创视讯科技股份有限公司 | Output voltage overshoot suppresser for PFC (power factor correction) circuit and power supply circuit with same |
| CN105429449A (en) * | 2015-12-09 | 2016-03-23 | 深圳欧陆通电子有限公司 | Anti-surge switching power supply and anti-surge circuit |
| WO2017097002A1 (en) * | 2015-12-09 | 2017-06-15 | 深圳欧陆通电子有限公司 | Anti-surge switching power supply and anti-surge circuit |
| CN108336722A (en) * | 2018-04-11 | 2018-07-27 | 四川升华电源科技有限公司 | Surge restraint circuit in parallel |
| CN108336722B (en) * | 2018-04-11 | 2024-01-16 | 四川升华电源科技有限公司 | Parallel surge suppression circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101908819B (en) | 2012-09-19 |
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