CN200969512Y - DC surge suppresser - Google Patents
DC surge suppresser Download PDFInfo
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- CN200969512Y CN200969512Y CN 200620136153 CN200620136153U CN200969512Y CN 200969512 Y CN200969512 Y CN 200969512Y CN 200620136153 CN200620136153 CN 200620136153 CN 200620136153 U CN200620136153 U CN 200620136153U CN 200969512 Y CN200969512 Y CN 200969512Y
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- 230000005669 field effect Effects 0.000 claims description 46
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model relates to a DC surge suppressor, which includes a power MOSFET (1) and a voltage-controlled generator circuit (2), the power MOSFET (1) is in series connected between the output terminal of DC power supply and the input terminal of electric equipment, the voltage - controlled generator circuit (2) is in series connected between the output terminal of DC power supply and the gate of the power MOSFET (1). The utility model solves the technical problem of electronic equipment damage because of the high output dynamic residual-voltage and the slow response for the present DC surge suppressor.
Description
Technical field
The utility model relates to a kind of direct current surge suppressor.
Background technology
Modern electronic equipment is more and more higher to the requirement of power supply, wishes that power supply can stablize.On aviation devices such as aircraft, because meetings such as the igniting of aircraft, startup, MISSILE LAUNCHING produce certain interference to power supply, cause the moment of DC power supply voltage to increase easily, the surge phenomenon appears; In addition, thunderbolt also can produce the surge phenomenon.Because most electronic equipments all work under DC power supply, the surge that exists on the DC power supply is with the breaking-up of the electronic equipment that directly causes.
The scheme of present inhibition direct current surge is: adopt TVS (Transient Voltage Suppressor) pipe or employing direct current integrated regulator or employing piezo-resistance or adopt their combination that DC power supply is carried out voltage stabilizing.Existing typical direct current surge suppressor has the EPD series DC overvoltage protection device of Hangzhou easy imperial electrical apparatus technology Co., Ltd on the market.The cut-away view of the protector that this is serial as shown in Figure 1, the inductance L of this protector utilization series connection and TVS pipe D and piezo-resistance V suppress the direct current surge.Dynamic residual voltage＜the 30V of output of EPD-12 type direct current surge suppressor, dynamic residual voltage＜the 60V of output of EPD-24 type direct current surge suppressor, dynamic residual voltage＜the 100V of output of EPD-48 type direct current surge suppressor, it is bigger to this shows that inhibitor is exported dynamic residual voltage ratio.Learn that by above analysis there is following shortcoming in existing technology:
(1), the dynamic residual voltage of output of TVS pipe and piezo-resistance is big, for precision equipment, excessive dynamic residual voltage can cause serious damage equally.
(2), the response speed of direct current integrated regulator is slow, is generally millisecond (ms) level, for precision equipment, the surge of microsecond (us) level can cause fatal damage equally.
(3), the power of direct current integrated regulator, operating voltage range is limited, excessive direct current surge can damage the direct current integrated regulator, finally causes the damage of electronic equipment.And the instantaneous power of general direct current surge is all very big.
(4), adopt the combination of TVS pipe, direct current integrated regulator and piezo-resistance, can not solve the slow problem of surge suppressor response speed equally, finally precision equipment is damaged.
The utility model content
The utility model has solved the dynamic residual voltage of output because of existing direct current surge suppressor, and to reach response speed greatly slow, the technical problem that causes electronic equipment to damage easily.
The utility model provides a kind of direct current surge suppressor, this direct current surge suppressor is serially connected between DC power supply and the power consumption equipment, its special character is: described direct current surge suppressor comprises power field effect pipe 1 and control voltage generation circuit 2, power field effect pipe 1 is serially connected between the input of the output of DC power supply and power consumption equipment, and control voltage generation circuit 2 is serially connected between the grid of the output of DC power supply and power field effect pipe 1.
Above-mentioned control voltage generation circuit 2 comprises voltage stabilizing circuit 3 and DC voltage booster circuit 4; Above-mentioned voltage stabilizing circuit 3 is serially connected between the input of the output of DC power supply and DC voltage booster circuit 4, and DC voltage booster circuit 4 is serially connected between the grid of the output of voltage stabilizing circuit 3 and power field effect pipe 1.
Above-mentioned direct current surge suppressor also comprises clamp circuit 5, and this clamp circuit 5 is serially connected between the grid of the output of power field effect pipe 1 and power field effect pipe 1.
Above-mentioned direct current surge suppressor also comprises a connection level circuit 6, and this connection grade circuit 6 is serially connected between the input of the output of power field effect pipe 1 and power consumption equipment.
Above-mentioned level circuit 6 comprises power field effect pipe 1 ' and bleeder circuit 7; This power field effect pipe 1 ' is serially connected between the input of the output of power field effect pipe 1 and power consumption equipment, and this bleeder circuit 7 is serially connected between the grid of the output of DC voltage booster circuit 4 and power field effect pipe 1 '.
Above-mentioned level circuit 6 also comprises clamp circuit 5 ', and this clamp circuit 5 ' is serially connected between the grid of the output of power field effect pipe 1 ' and power field effect pipe 1 '.
Above-mentioned level circuit 6 is one or more.
The utlity model has following advantage:
1, the utility model direct current surge suppressor, the direct current surge that adopt at a high speed, high-power FET (power MOS pipe) existed moment absorbs, and too much surge voltage loss on power field effect pipe (power MOS pipe), is guaranteed output voltage stabilization;
2, surge restraint circuit response speed of the present utility model can be with input 50V less than hundreds of nanosecond, and the surge of duration 100ms suppresses the dynamic residual voltage of output less than 5V, has protected accurate power consumption equipment to greatest extent;
3, by adjusting the parameter of circuit, we can also accomplish that surge suppresses the dynamic residual voltage of output less than 2V;
When 4, not having the direct current surge, the voltage drop that circuit is introduced is less than 0.08VA.
Description of drawings
Fig. 1 is a prior art EPD series DC overvoltage protection device cut-away view schematic diagram;
Fig. 2 is the electrical block diagram of the utility model direct current surge suppressor;
Fig. 3,4 is the utility model test result analysis schematic diagram;
Fig. 5 is the utility model most preferred embodiment electrical block diagram.
Embodiment
Referring to Fig. 2, the utility model direct current surge suppressor is serially connected between DC power supply and the power consumption equipment, comprise power field effect pipe 1 and control voltage generation circuit 2, power field effect pipe 1 is serially connected between the input of the output of DC power supply and power consumption equipment, and control voltage generation circuit 2 is serially connected between the grid of the output of DC power supply and power field effect pipe 1.
This control voltage generation circuit 2 comprises voltage stabilizing circuit 3 and DC voltage booster circuit (DC-DC) 4, the input of voltage stabilizing circuit 3 links to each other with the output of DC power supply, the output of voltage stabilizing circuit 3 links to each other with the input of DC voltage booster circuit (DC-DC) 4, and DC voltage booster circuit 4 is serially connected between the output and power field effect pipe 1 grid of voltage stabilizing circuit 3.
Voltage stabilizing circuit 3 can be made of resistance, zener diode, electric capacity, and wherein voltage stabilizing didoe is in parallel with electric capacity, and resistance is connected in series with this parallel circuits, obtains voltage stabilizing output on voltage stabilizing didoe; Or replace above-mentioned voltage stabilizing didoe to constitute by TVS pipe; Or replace above-mentioned voltage stabilizing didoe to constitute by integrated voltage-stabiliser tube; Or directly constitute or the like by integrated voltage-stabiliser tube and electric capacity in parallel.
DC voltage booster circuit 4 or constitute by oscillation generating circuit and charge pump booster circuit; Or constitute or the like by existing DC-DC circuit.DC voltage booster circuit 4 is boosted alternating voltage by charge pump booster circuit the direct current signal after obtaining boosting by filtering at last after adopting Wen's bridge oscillating circuit that the input signal direct voltage is become alternating voltage again.
By the utility model direct current surge suppressor, surge suppresses output and can be set on the fixing magnitude of voltage, thereby guarantees the voltage that output is stable.
In order to protect power field effect pipe; and make surge suppress output tracking input power supply normal working voltage; and it is littler to make surge suppress the dynamic residual voltage of output; can increase clamp circuit 5; the input of this clamp circuit 5 links to each other with the output of power field effect pipe 1, and output links to each other with the grid of power field effect pipe 1.Clamp circuit 5 can be by the two ends voltage-stabiliser tube or by realizations such as TVS pipes.
When operate as normal, promptly do not have under the situation of direct current surge, input voltage A obtains signal B through behind the voltage stabilizing circuit 3, B obtains signal C after through DC voltage booster circuit (DC-DC) 4, thereby power controlling field effect transistor (power MOS pipe) 1 complete conducting, the conducting resistance of power field effect pipe after the conducting (power MOS pipe) 1 is less than 40 milliohms, thereby the voltage drop that circuit is introduced is less than 0.04VA.In this case, clamp circuit 5 work, with signal C clamper on certain value.
There is the phase at the direct current surge, the moment increase of A point voltage, the B point voltage changes very little, can ignore, and same C point voltage is subjected to the influence of clamp circuit 5, exists the phase can increase a bit at surge, causes exporting D and increases a bit.By adjusting the circuit parameter of clamp circuit 5, can be so that the C point voltage exists the phase increase very little at surge, thereby only make output D increase 2V, so just the moment direct current surge high voltage with the input of A point is suppressed to the only 2V residual voltage output that D is ordered, and has guaranteed the steady operation of follow-up power consumption equipment.
Because some is battery power supply system for a DC power supply, the supply voltage of operate as normal can be certain interior value of scope.Clamp circuit 5 can tracking power supply slow variation, output voltage D and exists phase D point to export the surge residual voltage less than 2V at surge only than the little 0.04VA of A when guaranteeing operate as normal.
Referring to Fig. 3, shown in Figure 4, Fig. 3 is A point surge input waveform, and Fig. 4 suppresses output waveform for D point surge.Surge voltage Us is 50V among Fig. 3, and the normal output voltage U in of DC power supply is 18V---40V, and the surge duration is 100ms.Among Fig. 4, when Uss is operate as normal, the output voltage of surge suppressor, Us ' is Uss+2V, is the output voltage of surge duration of existence surge suppressor.This shows that behind the direct current surge suppressor, the dynamic residual voltage that surge suppresses output is very little.
As shown in Figure 5,, when bigger surge exists, can suppress technology, promptly increase the inhibition that connection level circuit 6 is realized bigger surge voltage by the two-stage surge because single power field effect pipe (power MOS pipe) 1 power is limited.This connection level circuit 6 is serially connected between the input of the output of power field effect pipe 1 and power consumption equipment.Connection level circuit 6 comprises power field effect pipe 1 ' and bleeder circuit 7, power field effect pipe 1 ' is serially connected between the input of the output of power field effect pipe 1 and power consumption equipment, and bleeder circuit 7 is serially connected between the grid of the output of DC voltage booster circuit (DC-DC) 4 and power field effect pipe 1.A connection level circuit 6 can also comprise clamp circuit 5 ', and clamp circuit 5 ' is serially connected between the grid of the output of power field effect pipe 1 ' and power field effect pipe 1 '.Bleeder circuit 7 can adopt two electric resistance partial pressures or adopt another DC-DC circuit etc. to obtain.
In two-stage direct current surge suppressor, the generation of first order control voltage D is identical with the one-level surge suppressor, by adjusting clamp circuit 5, making first order direct current surge suppress the output residual voltage is half of former surge voltage, and promptly the first order suppresses the surge voltage of half; By bleeder circuit, obtain the control voltage F of power field effect pipe 1 ', same clamp circuit 5 ' is being controlled voltage F automatically, makes second level surge suppress output G point residual voltage less than 2V.Because used two power field effect pipe series connection, the voltage drop that the direct current surge suppressor is introduced is less than 0.08VA.
In the practical application, can increase a plurality of level circuit according to the size cases of surge.
Claims (7)
1, a kind of direct current surge suppressor, this direct current surge suppressor is serially connected between DC power supply and the power consumption equipment, it is characterized in that: described direct current surge suppressor comprises power field effect pipe (1) and control voltage generation circuit (2), power field effect pipe (1) is serially connected between the input of the output of DC power supply and power consumption equipment, and control voltage generation circuit (2) is serially connected between the grid of the output of DC power supply and power field effect pipe (1).
2, direct current surge suppressor according to claim 1 is characterized in that: described control voltage generation circuit (2) comprises voltage stabilizing circuit (3) and DC voltage booster circuit (4); Described voltage stabilizing circuit (3) is serially connected between the input of the output of DC power supply and DC voltage booster circuit (4), and DC voltage booster circuit (4) is serially connected between the grid of the output of voltage stabilizing circuit (3) and power field effect pipe (1).
3, direct current surge suppressor according to claim 1 and 2, it is characterized in that: described direct current surge suppressor also comprises clamp circuit (5), and this clamp circuit (5) is serially connected between the grid of the output of power field effect pipe (1) and power field effect pipe (1).
4, direct current surge suppressor according to claim 3 is characterized in that: described direct current surge suppressor also comprises a connection level circuit (6), and described level circuit (6) is serially connected between the input of the output of power field effect pipe (1) and power consumption equipment.
5, direct current surge suppressor according to claim 4 is characterized in that: described level circuit (6) comprises power field effect pipe (1 ') and bleeder circuit (7); Described power field effect pipe (1 ') is serially connected between the input of the output of power field effect pipe (1) and power consumption equipment, and described bleeder circuit (7) is serially connected between the grid of the output of DC voltage booster circuit (4) and power field effect pipe (1 ').
6, direct current surge suppressor according to claim 5, it is characterized in that: described level circuit (6) also comprises clamp circuit (5 '), and described clamp circuit (5 ') is serially connected between the grid of the output of power field effect pipe (1 ') and power field effect pipe (1 ').
7, direct current surge suppressor according to claim 6 is characterized in that: described level circuit (6) is for one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136153 CN200969512Y (en) | 2006-11-15 | 2006-11-15 | DC surge suppresser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136153 CN200969512Y (en) | 2006-11-15 | 2006-11-15 | DC surge suppresser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200969512Y true CN200969512Y (en) | 2007-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620136153 Expired - Fee Related CN200969512Y (en) | 2006-11-15 | 2006-11-15 | DC surge suppresser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200969512Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177429A1 (en) * | 2016-04-15 | 2017-10-19 | Littelfuse Semiconductor (Wuxi) Co., Ltd. | Overvoltage protection and linear regulator device module |
| CN112467707A (en) * | 2020-10-30 | 2021-03-09 | 中国航发西安动力控制科技有限公司 | Overvoltage surge suppression circuit |
-
2006
- 2006-11-15 CN CN 200620136153 patent/CN200969512Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177429A1 (en) * | 2016-04-15 | 2017-10-19 | Littelfuse Semiconductor (Wuxi) Co., Ltd. | Overvoltage protection and linear regulator device module |
| KR20190018416A (en) * | 2016-04-15 | 2019-02-22 | 리텔퓨즈 세미컨덕터 (우시) 씨오., 엘티디. | Overvoltage Protection and Linear Regulator Device Module |
| CN109643892A (en) * | 2016-04-15 | 2019-04-16 | 力特半导体（无锡）有限公司 | Overvoltage protection and linear regulator EM equipment module |
| US20190140444A1 (en) * | 2016-04-15 | 2019-05-09 | Littelfuse Semiconductor (Wuxi) Co., Ltd. | Overvoltage Protection and Linear Regulator Device Module |
| US20200136379A1 (en) * | 2016-04-15 | 2020-04-30 | Littelfuse Semiconductor (Wuxi) Co., Ltd. | Overvoltage Protection and Linear Regulator Device Module |
| US10998719B2 (en) | 2016-04-15 | 2021-05-04 | Littelfuse Semiconductor (Wuxi) Co., Ltd. | Overvoltage protection and linear regulator device module |
| KR102518650B1 (en) | 2016-04-15 | 2023-04-06 | 리텔퓨즈 세미컨덕터 (우시) 씨오., 엘티디. | Overvoltage protection and linear regulator device module |
| CN112467707A (en) * | 2020-10-30 | 2021-03-09 | 中国航发西安动力控制科技有限公司 | Overvoltage surge suppression circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |