CN102969883B - A kind of Switching Power Supply hiccup protections and delay protection circuit - Google Patents
A kind of Switching Power Supply hiccup protections and delay protection circuit Download PDFInfo
- Publication number
- CN102969883B CN102969883B CN201210519535.0A CN201210519535A CN102969883B CN 102969883 B CN102969883 B CN 102969883B CN 201210519535 A CN201210519535 A CN 201210519535A CN 102969883 B CN102969883 B CN 102969883B
- Authority
- CN
- China
- Prior art keywords
- circuit
- delay
- resistance
- power supply
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Control Of Voltage And Current In General (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a kind of Switching Power Supply hiccup protections and delay protection circuit, and it comprises: power work accumulator; Power work state detection circuit; The delay circuit action delay circuit that comes into force; Relatively confirm to carry out shutdown circuit; Delay circuit, described power work accumulator is made up of diode D22, resistance R 24 and capacitor C 17; Described power work state detection circuit is made up of resistance R 88, resistance R 58 and triode Q15; The described delay circuit action delay circuit that comes into force is made up of resistance R 39 and capacitor C 24; Described relatively confirmation is carried out shutdown circuit and is made up of metal-oxide-semiconductor Q14; Described delay circuit is made up of capacitor C 17 and resistance R 51. The invention has completed the delay circuit of all protections of whole power supply and the circuit of having the hiccups by a simple delay circuit, and circuit structure is simpler. And greatly simplified design sequential difficulty, and reduce power supply cost, increase power supply reliability.
Description
Technical field
The invention relates to a kind of Switching Power Supply hiccup protections and delay protection circuit.
Background technology
In the middle of power supply practical application, a lot of protections all need to make the circuit of having the hiccups. Prior art is general to be adopted by each independentlyHolding circuit do respectively the circuit of having the hiccups and maybe all holding circuit signals be all aggregated in the middle of the circuit of having the hiccups. The formerCircuit is very complicated, and the latter is relatively simple, but the latter still needs to solve signal collocation and sequential cooperation between various holding circuitsProblem, not only design difficulty is large, and the cost of power supply and the difficulty of production that increase, has reduced the reliability of power supply. AndAnd final power supply also needs to do protection delay circuit, so also exist every kind of holding circuit to make the complexity of protection time delay.
Summary of the invention
For above-mentioned technological deficiency, the invention provides a kind of Switching Power Supply hiccup protections and delay protection circuit, has solved guarantorProtect and have the hiccups and the time delay demand of holding circuit, and circuit structure is simple.
It is as described below that the invention solves the technical scheme that its technical problem adopts: a kind of Switching Power Supply hiccup protections and time delayHolding circuit, is characterized in that, comprising:
Power work accumulator, this circuit is that the follow-up protection time delay of having the hiccups and shut down is prepared, delay circuit power supply and itsIts circuit separately, can misoperation while having guaranteed machine, when after delay circuit onset not because external status changes delay circuitDuty;
Power work state detection circuit, this circuit is realized the delay protection that completes all circuit by a delay circuit, instituteMust be that power work just exists with the signal detecting, and power supply not be worked with regard to the signal disappearing;
The delay circuit action delay circuit that comes into force, this circuit is realized the power supply object that delay circuit just moves after shutdown really, avoidsMisoperation when power input voltage or load variations cause the larger adjustment of power supply;
Relatively confirm to carry out shutdown circuit, come into force after circuit by delay circuit action delay, this circuit operation, power supply shutdown;
Delay circuit, during this circuit is carried out, in off-mode, avoids occurring instantaneous start or repeated switching, reachesProtect the object of having the hiccups regularly and protecting time delay.
Described power work accumulator is made up of diode D22, resistance R 24 and capacitor C 17; Described power work state inspectionSlowdown monitoring circuit is made up of resistance R 88, resistance R 58 and triode Q15; Described delay circuit action delay comes into force circuit by resistance R 39Form with capacitor C 24; Described relatively confirmation is carried out shutdown circuit and is made up of metal-oxide-semiconductor Q14; Described delay circuit is by capacitor C 17Form with resistance R 51, after power work, DRA energy is stored in capacitor C 17 by diode D22, resistance R 24; DRABy resistance R 88, triode Q15, resistance R 58 to metal-oxide-semiconductor Q14; After DRA no-output, triode Q15 is not open-minded, electricityThe DRA energy holding on C17 charges to capacitor C 24 by resistance R 39, and capacitor C 24 voltages reach the door capable of being opened of metal-oxide-semiconductor Q14After voltage limit Gth, metal-oxide-semiconductor Q14 is open-minded, and after power supply shutdown, the energy of capacitor C 17 discharges by resistance R 51.
Described power work state detection circuit replaces with mos pipe.
Described relatively confirmation is carried out shutdown circuit and is replaced with comparator.
According to the invention of said structure, its beneficial effect is, the invention is had the hiccups protection and protected time delay integratedTogether, the delay circuit of all protections of whole power supply and the circuit of having the hiccups, circuit structure have been completed by a simple delay circuitSimpler. And the SECO problem of time delay circuit operation while there is not power work, simplified design sequential difficulty greatly.Avoid design iterations delay circuit, reduced power supply cost, increased power supply reliability.
Brief description of the drawings
Below in conjunction with accompanying drawing and embodiment, the invention is described further.
Fig. 1 is the invention circuit structure block diagram;
Fig. 2 is the invention embodiment mono-circuit theory diagrams;
Fig. 3 is the invention embodiment bis-circuit theory diagrams;
Fig. 4 is the invention embodiment three-circuit schematic diagram.
Detailed description of the invention
As shown in Figure 1, a kind of Switching Power Supply hiccup protections and delay protection circuit comprise five circuit, the one, power work energy storageCircuit, power supply only has after work could energy storage, for the later protection time delay of having the hiccups and shut down is prepared; Its delay circuit suppliesElectricity and other circuit separately, can misoperations while having guaranteed machine. The 2nd, power work state detection circuit, it guarantees a time delayCircuit just completes all protection latency issues; The 3rd, the delay circuit action delay circuit that comes into force, this circuit guarantees that power supply shuts down reallyRear delay circuit just move; The 4th, relatively confirm to carry out shutdown circuit, come into force after circuit by delay circuit action delay, closeMachine is carried out circuit operation, power supply shutdown; The 5th, delay circuit, during this circuit is carried out, no matter external circuit duty isNoly meet compressor start up condition, all in off-mode, in order to avoid there is instantaneous start or repeated switching, reach regular the having the hiccups of protectionEffect with protection time delay.
Embodiment mono-
As shown in Figure 2, after power work, DRA energy (DRA take from the drive output signal of power supply PWM or take from transformer aroundGroup etc.) be stored in capacitor C 17 by diode D22, resistance R 24, capacitor C 17 voltages reach DRA voltage and complete energy storage.After power work, DRA makes the G of metal-oxide-semiconductor Q14 very low by resistance R 88, triode Q15, resistance R 58, and protection is notAction. After DRA no-output, triode Q15 is not open-minded, and the energy in capacitor C 17 charges to capacitor C 24 by resistance R 39,Until capacitor C 24 voltages reach the Gth voltage of metal-oxide-semiconductor Q14, the time delay circuit that comes into force completes. Capacitor C 24 voltages reach MOSAfter the Gth voltage of pipe Q14, metal-oxide-semiconductor Q14 is open-minded, and OFF signal is carried out start. After power supply shutdown, the energy of capacitor C 17 is logicalCross resistance R 51 and discharge, the RC constant of two elements composition and the Gth of DRA voltage and metal-oxide-semiconductor Q14 determine delay time.
Embodiment bis-
As shown in Figure 3, wherein the power work state detection circuit in above-described embodiment one replaces with mos pipe.
Embodiment tri-
As shown in Figure 4, under the basis of embodiment bis-, will relatively confirm that carrying out shutdown circuit replaces with comparator.
Above content is the further description of the invention being done in conjunction with concrete preferred embodiment, can not assert thisThe concrete enforcement of the invention is confined to these explanations. Come for the invention person of an ordinary skill in the technical fieldSay, without departing from the concept of the premise of the invention, can also make some simple deduction or replace, all should be considered as belonging toThe protection domain of the invention.
Claims (3)
1. Switching Power Supply hiccup protections and a delay protection circuit, is characterized in that, comprising:
Power work accumulator, this circuit is that the follow-up protection time delay of having the hiccups and shut down is prepared, delay circuit power supply and itsIts circuit separately, can misoperation while having guaranteed machine, when after delay circuit onset not because external status changes delay circuitDuty;
Power work state detection circuit, this circuit is realized the delay protection that completes all circuit by a delay circuit;
The delay circuit action delay circuit that comes into force, this circuit is realized the power supply object that delay circuit just moves after shutdown really, avoidsMisoperation when power input voltage or load variations cause the larger adjustment of power supply;
Relatively confirm to carry out shutdown circuit, come into force after circuit by delay circuit action delay, this circuit operation, power supply shutdown;
Delay circuit, during this circuit is carried out, before power work stored energy runs out of all in off-mode, not because ofExternal circumstances changes and becomes, and avoids occurring instantaneous start or repeated switching, reaches protection and has the hiccups regularly and protect time delayObject,
Described power work accumulator is made up of diode D22, resistance R 24 and capacitor C 17; Described power work state inspectionSlowdown monitoring circuit is made up of resistance R 88, resistance R 58 and triode Q15; Described delay circuit action delay comes into force circuit by resistance R 39Form with capacitor C 24; Described relatively confirmation is carried out shutdown circuit and is made up of metal-oxide-semiconductor Q14; Described delay circuit is by capacitor C 17Form with resistance R 51, after power work, DRA energy is stored in capacitor C 17 by diode D22, resistance R 24; DRAMake triode Q15 conducting by resistance R 88, resistance R 58, the Vgs of Q14 is low level; After DRA no-output, triode Q15Not open-minded, the energy in capacitor C 17 charges to capacitor C 24 by resistance R 39, and capacitor C 24 voltages reach the unlatching electricity of Q14Press after VGth voltage, metal-oxide-semiconductor Q14 is open-minded, and after power supply shutdown, the energy of capacitor C 17 discharges by resistance R 51.
2. a kind of Switching Power Supply hiccup protections according to claim 1 and delay protection circuit, is characterized in that described electricitySource Working state checking circuit replaces with mos pipe.
3. a kind of Switching Power Supply hiccup protections according to claim 1 and delay protection circuit, is characterized in that, described ratioConfirm that carrying out shutdown circuit replaces with comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210519535.0A CN102969883B (en) | 2012-12-07 | 2012-12-07 | A kind of Switching Power Supply hiccup protections and delay protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210519535.0A CN102969883B (en) | 2012-12-07 | 2012-12-07 | A kind of Switching Power Supply hiccup protections and delay protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102969883A CN102969883A (en) | 2013-03-13 |
| CN102969883B true CN102969883B (en) | 2016-05-04 |
Family
ID=47799824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210519535.0A Active CN102969883B (en) | 2012-12-07 | 2012-12-07 | A kind of Switching Power Supply hiccup protections and delay protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102969883B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582207A (en) * | 2013-11-13 | 2014-02-12 | 深圳市东方之星电源有限公司 | Constant current power supply open loop hiccup protection circuit |
| CN103929854B (en) * | 2014-04-02 | 2016-02-10 | 深圳市明微电子股份有限公司 | A kind of LED drive device and LED light adjusting controller thereof |
| CN108988296A (en) * | 2018-07-23 | 2018-12-11 | 安徽衡孚电子科技有限公司 | A kind of overload hiccup protections circuit for half-bridge topology Switching Power Supply |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829031A (en) * | 2005-03-03 | 2006-09-06 | 中兴通讯股份有限公司 | Short-circuit protection circuit with self-recovering function |
| CN2882068Y (en) * | 2006-01-13 | 2007-03-21 | 北京动力源科技股份有限公司 | Switch power supply burp protection circuit |
| CN101277058A (en) * | 2008-02-28 | 2008-10-01 | 艾默生网络能源有限公司 | Secondary time-delay soft start circuit of DC/DC convertor |
| CN201608637U (en) * | 2010-01-12 | 2010-10-13 | 杨东平 | Start delay circuit used for power supply PWM control chip |
| CN202050391U (en) * | 2011-02-24 | 2011-11-23 | 广州视源电子科技有限公司 | Delayed starting circuit for MOS transistor |
| CN102263494A (en) * | 2010-05-31 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Control chip enabling circuit |
-
2012
- 2012-12-07 CN CN201210519535.0A patent/CN102969883B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829031A (en) * | 2005-03-03 | 2006-09-06 | 中兴通讯股份有限公司 | Short-circuit protection circuit with self-recovering function |
| CN2882068Y (en) * | 2006-01-13 | 2007-03-21 | 北京动力源科技股份有限公司 | Switch power supply burp protection circuit |
| CN101277058A (en) * | 2008-02-28 | 2008-10-01 | 艾默生网络能源有限公司 | Secondary time-delay soft start circuit of DC/DC convertor |
| CN201608637U (en) * | 2010-01-12 | 2010-10-13 | 杨东平 | Start delay circuit used for power supply PWM control chip |
| CN102263494A (en) * | 2010-05-31 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Control chip enabling circuit |
| CN202050391U (en) * | 2011-02-24 | 2011-11-23 | 广州视源电子科技有限公司 | Delayed starting circuit for MOS transistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102969883A (en) | 2013-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104201652A (en) | Power protection control method | |
| CN104009633B (en) | A kind of electric current continuous high-gain DC-DC converter circuit | |
| CN103441660A (en) | Direct current power supply slow starting circuit of gateway device | |
| CN104158154A (en) | Photovoltaic inverter and protection device of photovoltaic inverter | |
| CN203416169U (en) | Flyback power supply circuit | |
| CN102969883B (en) | A kind of Switching Power Supply hiccup protections and delay protection circuit | |
| CN104571433A (en) | Vehicular computer power supply and surge voltage suppression method thereof | |
| CN207675825U (en) | A kind of zero cross detection circuit | |
| CN203787956U (en) | Surge voltage suppression circuit | |
| CN203984377U (en) | One is with soft start and turn-off switching circuit fast | |
| CN105006860A (en) | Controllable charge and discharge apparatus and voltage-equalizing circuit of a supercapacitor based on apparatus | |
| CN102801137B (en) | A kind of LED short-circuit protection circuit and light fixture | |
| CN104104237A (en) | Frequency converter having high/low voltage ride-through function | |
| CN206353445U (en) | A kind of power supply circuit of solid state hard disc | |
| CN204144919U (en) | Multiple power supplies monitoring and protective circuit | |
| CN102684167B (en) | Power supply power-fail recoil protective circuit | |
| CN103337955A (en) | Low-loss series capacitance voltage-sharing device | |
| CN204794241U (en) | Controllable discharge device that fills reaches equalizer circuit based on super capacitor of this device | |
| CN103326344A (en) | Overvoltage limiting circuit | |
| CN203166758U (en) | Remote turn-off control signal receiving circuit | |
| CN203707738U (en) | Power-down time-delay under-voltage controller | |
| CN203056840U (en) | Switching power supply circuit and RCD absorption circuit thereof | |
| CN201887472U (en) | Electric time-lapse energizing circuit | |
| CN207835086U (en) | Mobile power | |
| CN105406522A (en) | Pulse type electricity acquiring method of line fault indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Shenzhen City, Shenzhen, Guangdong, Nanshan District Taoyuan street, No. 1268, honghualing industrial North District, 1, 2 4 floors, West, 5, 6. Patentee after: Shenzhen holdluck-zyt supply technology Limited by Share Ltd Address before: 518000 Shenzhen City, Shenzhen, Guangdong, Nanshan District Taoyuan street, No. 1268, honghualing industrial North District, 1, 2 4 floors, West, 5, 6. Patentee before: ShenZhen VAPEL Power Supply Technology Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518116 Shenzhen, Longgang, Guangdong Longgang District, Baolong Industrial Zone, Longgang Road, three road 4, A Building 1, 2 floor B building 3, 4 floor C building 3, 4 Building D Patentee after: Shenzhen holdluck-zyt supply technology Limited by Share Ltd Address before: 518000 Shenzhen City, Shenzhen, Guangdong, Nanshan District Taoyuan street, No. 1268, honghualing industrial North District, 1, 2 4 floors, West, 5, 6. Patentee before: Shenzhen holdluck-zyt supply technology Limited by Share Ltd |