CN206076928U - DC/DC power modules with lightning protection - Google Patents
DC/DC power modules with lightning protection Download PDFInfo
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- CN206076928U CN206076928U CN201620537014.1U CN201620537014U CN206076928U CN 206076928 U CN206076928 U CN 206076928U CN 201620537014 U CN201620537014 U CN 201620537014U CN 206076928 U CN206076928 U CN 206076928U
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- lightning protection
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- power modules
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- resistance
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 20
- 230000001052 transient effect Effects 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 12
- 229960001296 zinc oxide Drugs 0.000 claims description 10
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- 230000000694 effects Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
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- 238000004146 energy storage Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- 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
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Abstract
DC/DC power modules with lightning protection，Including the lightning protection unit for coupling successively、Clamping protection unit and residual voltage protection location，Wherein，When the surge electric energy that induced lightening brings is excessive，Lightning protection unit directly disconnects，Prevent follow-up unit and DC/DC power modules body from directly being burnt by excessive surge，When the surge that induced lightening brings is insufficient to allow lightning protection unit to disconnect，Clamping protection unit sponges unnecessary surge，Surge stream enters DC/DC power modules，Damage DC/DC power modules，Clamping protection unit might have residual voltage outflow when surge is absorbed，Unnecessary residual voltage is sponged by residual voltage protection location，To play the effect damaged by the surge for protecting the not sensed thunder of DC/DC power modules to bring，Simultaneously，Above-mentioned unit can also sponge the surge current of start.
Description
Technical field
The utility model is related to modular power source field, the DC/DC power modules more particularly to lightning protection.
Background technology
Power module can be the power supply unit being directly mounted on printed circuit board (PCB), be characterized in being special integrated
Circuit（ASIC）, digital signal processor (DSP), microprocessor, memory, field programmable gate array (FPGA) and its
He provides power supply by digital or fictitious load.In general, this generic module referred to as loads point (POL) power system or use
Point source supply system (PUPS).Due to the advantage of modular organization it is a lot of, therefore modular power source be widely used in switching equipment,
The communications field such as access device, mobile communication, microwave communication and optical transport, router and automotive electronics, Aero-Space etc..
And the DC/DC power modules in these fields are applied at present, due to high to performance and reliability requirement, need to have
Various defencive functions.
Notification number is to disclose " the DC/DC power modules with under-voltage and current-limiting protection " hereinafter referred to as in CN2664278Y
Documents 1, it includes surge restraint circuit for reducing power-on surge current, but for this high surge voltage excessively that is struck by lightning
Or electric current, the technical scheme disclosed in the documents 1 can not play a protective role to DC/DC power modules.
Utility model content
The purpose of this utility model is to provide a kind of DC/DC power modules with lightning protection, works as thunderbolt（Induced lightening
The surge for bringing）When, DC/DC power modules can be played a protective role.
Above-mentioned purpose of the present utility model technical scheme is that：
DC/DC power modules with lightning protection, including DC/DC power module bodies, including
Lightning protection unit, is coupled to the input of power supply, when induced lightening brings surge excessive, the lightning protection list
Unit disconnects；
Clamping protection unit, is coupled to the first lightning protection unit, when the surge that induced lightening brings be insufficient to allow it is described anti-
When thunder protection location disconnects, the clamping protection unit absorbs surge；
Residual voltage protection location, is coupled between clamping protection unit and DC/DC power module bodies, for absorbing the pincers
The remaining residual voltage of position protection location.
By adopting above-mentioned technical proposal, the DC/DC power modules of lightning protection should be carried, including the lightning protection for coupling successively
Protection location, clamping protection unit and residual voltage protection location, wherein, when the surge electric energy that induced lightening brings is excessive, lightning protection
Protection location directly disconnects, and prevents follow-up unit and DC/DC power modules body from directly being burnt by excessive surge, works as sense
When the surge that Ying Lei brings is insufficient to allow lightning protection unit to disconnect, clamping protection unit sponges unnecessary surge, surge stream
Enter DC/DC power modules, damage DC/DC power modules, clamping protection unit might have residual voltage outflow when surge is absorbed,
Unnecessary residual voltage is sponged by residual voltage protection location, to play the surge for protecting the not sensed thunder of DC/DC power modules to bring
The effect damaged, meanwhile, above-mentioned unit can also sponge the surge current of start.
Used as improvement of the present utility model, the lightning protection unit includes being coupled to the fuse of power input.
By adopting above-mentioned technical proposal, fuse（fuse）, refer to when electric current exceedes setting, produced with itself
Heat makes melt fuse, a kind of electrical equipment of disconnecting circuit, fuse be according to electric current exceed setting for a period of time after, with its from
The heat that body is produced makes Melt molten, so that circuit disconnects；With a kind of current protector made by this principle.
As improvement of the present utility model, between the lightning protection unit and clamping protection unit, also include input protection
Unit, the input protection location include filter capacitor and the Transient Suppression Diode being arranged in parallel.
By adopting above-mentioned technical proposal, a protection location is set between lightning protection unit and clamping protection unit,
The protection location includes filter capacitor and Transient Suppression Diode, and on the one hand filter capacitor can reduce EMI interference, on the other hand
Input impedance, the stability of strengthening system can be reduced, there are Transient Suppression Diode the two poles of the earth to be subject to direction transient state high-energy punching
When hitting, the high impedance of its two interpolar can be changed into Low ESR, is absorbed up to thousands of with the speed of 10 minus 12 power second-time by it
Watt surge power, make the voltage clamp of two interpolars in a predetermined value, play a part of further lightning protection.
Used as improvement of the present utility model, the clamping protection unit includes the first piezo-resistance and second being arranged in series
The node ground connection of piezo-resistance, first piezo-resistance and the coupling of the second piezo-resistance.
By adopting above-mentioned technical proposal, piezo-resistance is a kind of resistance device with nonlinear wind vibration, mainly
For carrying out voltage clamping when circuit bears overvoltage, unnecessary electric current is absorbed to protect Sensitive Apparatus, herein piezo-resistance
Voltage in setting system is not rising, and is played a protective role in the way of clamping.
Between node and ground as improvement of the present utility model, first piezo-resistance and the coupling of the second piezo-resistance
It is serially connected with a gas-discharge tube.
By adopting above-mentioned technical proposal, due to the unstability of piezo-resistance, the application of long-time high temperature can cause electric leakage
Stream increases, cheap piezo-resistance inferior, it is also possible to blast of generating heat, and is to solve this problem gas is sealed between piezo-resistance
Body discharge tube.
Used as improvement of the present utility model, first piezo-resistance and the second piezo-resistance are Zinc-oxide piezoresistor.
By adopting above-mentioned technical proposal, Zinc-oxide piezoresistor has low cost, and resistance discharge capacity is big, residual voltage compared with
Low, the reaction time is fast, is nS levels（Less than or equal to 25）, it is follow current, but Zinc-oxide piezoresistor is with affecting into temperature
Big the characteristics of, and due to the setting of gas-discharge tube, so this problem is not just problem.
As improvement of the present utility model, between the clamping protection unit and residual voltage protection location, decoupling list is coupled with
Unit.
Clamping protection is so can ensure that with time delay is played a part of by adopting above-mentioned technical proposal, decoupling unit
Unit is than the action of residual voltage protection location elder generation.
Used as improvement of the present utility model, the decoupling unit is set to common mode inductance.
Common mode inductance is set to by adopting above-mentioned technical proposal, decoupling unit, common mode inductance can ensure that clamping protection
Unit than the action of residual voltage protection location elder generation, while, moreover it is possible to effectively suppression common mode interference is affected on DC/DC power modules, so
As preferred.
Used as improvement of the present utility model, to be arranged in series a TVS, (transient voltage suppresses two to the residual voltage protection location
Pole pipe) and the 2nd TVS, a TVS and the 2nd TVS coupling node ground connection.
By adopting above-mentioned technical proposal, using TVS when there is surge pulse voltage, diac can be rapid
Zener breakdown, is changed into low resistive state from high-impedance state, surge voltage is shunted and is clamped, so as to protect DC/DC power supply moulds
Block is not damaged by moment surge pulse voltage.
Used as improvement of the present utility model, the residual voltage protection location is the first electric capacity and the second electric capacity being arranged in series,
The node ground connection of first electric capacity and the coupling of the second electric capacity.
By adopting above-mentioned technical proposal, when voltage is added between two metal electrodes, electric charge, institute on electrode, will be stored
Be energy-storage travelling wave tube with capacitor, residual voltage is absorbed using this characteristic of capacitor.
In sum, the utility model has the advantages that：The DC/DC power modules of lightning protection, bag should be carried
Lightning protection unit, clamping protection unit and the residual voltage protection location for coupling successively is included, wherein, when the surge that induced lightening brings
When electric energy is excessive, lightning protection unit directly disconnects, and prevents follow-up unit and DC/DC power modules body by excessive wave
Gush and directly burn, when the surge that induced lightening brings is insufficient to allow lightning protection unit to disconnect, clamping protection unit sponges many
Remaining surge, surge stream enter DC/DC power modules, damage DC/DC power modules, and clamping protection unit can when surge is absorbed
Residual voltage outflow can be had, unnecessary residual voltage is sponged by residual voltage protection location, is protected DC/DC power modules not felt to play
The effect damaged by the surge that Ying Lei brings, meanwhile, above-mentioned unit can also sponge the surge current of start.
Description of the drawings
Fig. 1 is the circuit block diagram of embodiment 1；
Fig. 2 is the connection circuit figure of embodiment 1；
Fig. 3 is the circuit block diagram of embodiment 2；
Fig. 4 is the connection circuit figure of embodiment 2；
Fig. 5 is the connection circuit figure of embodiment 3；
Fig. 6 is the connection circuit figure of embodiment 4；
Fig. 7 is the connection circuit figure of embodiment 5.
In figure, 1, lightning protection unit；2nd, protection location；3rd, clamping protection unit；4th, decoupling unit；5th, residual voltage protection is single
Unit.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1,
Shown in seeing figures.1.and.2, the DC/DC power modules with lightning protection include the lightning protection list for coupling successively
Unit 1, protection location 2, clamping protection unit 3 and residual voltage protection location 5, wherein, lightning protection unit 1 is used for protection system
Stable not made line loss bad by excessive surge, the lightning protection unit 1 is set to fuse FU or fuse, and fuse FU is referred to
When electric current exceedes setting, melt is made to fuse with the heat that itself produces, a kind of electrical equipment of disconnecting circuit, fuse FU is root
After exceeding setting for a period of time according to electric current, Melt molten is made with the heat that its own produces, so that circuit disconnects；With this
A kind of current protector made by principle is planted, when the surge electric energy that induced lightening brings is excessive, lightning protection unit 1 directly breaks
Open, prevent follow-up unit and DC/DC power modules body from directly being burnt by excessive surge；Lightning protection unit 1 is coupled
There is a protection location 2, the protection location 2 includes filter capacitor C1 and Transient Suppression Diode D1, filter capacitor C1 on the one hand can
To reduce EMI interference, input impedance on the other hand can be reduced, the stability of strengthening system, Transient Suppression Diode D1 have
When the two poles of the earth are subject to direction transient state high energy impact events, it can be with the speed of 10 minus 12 power second-time, by the high resistant of its two interpolar
Resistance is Low ESR, absorbs up to thousands of watts of surge power, makes the voltage clamp of two interpolars in a predetermined value, play into one
The effect of step lightning protection；When the surge that induced lightening brings than it is larger when, and be insufficient to allow fuse scaling loss, due to excessive surge
DC/DC modules can be damaged, so being provided with clamping protection unit 3, for absorbing surge, clamping protection list includes what is be arranged in series
First piezo-resistance RV1 and the second piezo-resistance RV2RV1, and the node of the first piezo-resistance and the coupling of the second piezo-resistance RV2
Ground connection, piezo-resistance is a kind of resistance device with nonlinear wind vibration, is mainly used in carrying out when circuit bears overvoltage
Voltage clamping, absorbs unnecessary electric current to protect Sensitive Apparatus, and the voltage in the setting system of piezo-resistance is rising herein,
Played a protective role in the way of clamping；Through the voltage of clamping protection unit 3, absorb unclean as prime may be present
Situation, so being provided with residual voltage protection location 5, the residual voltage protection location is arranged in series TVS1 (transient voltage suppressor diode)
And the node ground connection of TVS2, the TVS1 and TVS2 coupling, it is using TVS when there is surge pulse voltage, two-way to puncture two poles
The rapid Zener breakdown of pipe energy, is changed into low resistive state from high-impedance state, surge voltage is shunted and is clamped, so as to protect DC/
DC power module is not damaged by moment surge pulse voltage, to play lightning protection effect.
Embodiment 2,
With reference to shown in Fig. 3 and Fig. 4, the DC/DC power modules with lightning protection, including the lightning protection list for coupling successively
Unit 1, protection location 2, clamping protection unit 3, decoupling unit 4 and residual voltage protection location 5, wherein, lightning protection unit 1 is used for
The stable of protection system is not made line loss bad by excessive surge, and the lightning protection unit 1 is set to fuse FU or fuse, melts
Disconnected device FU refers to that when electric current exceedes setting make melt fuse with the heat that itself produces, a kind of electrical equipment of disconnecting circuit melts
Disconnected device FU be according to electric current exceed setting for a period of time after, Melt molten is made with the heat that its own produces, so that circuit
Disconnect；With a kind of current protector made by this principle, when the surge electric energy that induced lightening brings is excessive, lightning protection list
Unit 1 directly disconnects, and prevents follow-up unit and DC/DC power modules body from directly being burnt by excessive surge；Lightning protection
Unit 1 is coupled with a protection location 2, and the protection location 2 includes filter capacitor C1 and Transient Suppression Diode D1, filter capacitor C1
On the one hand EMI interference can be reduced, input impedance on the other hand can be reduced, the stability of strengthening system, transient state suppresses two poles
When there are pipe D1 the two poles of the earth to be subject to direction transient state high energy impact events, it can be with the speed of 10 minus 12 power second-time, by its two poles of the earth
Between high impedance be changed into Low ESR, absorb up to thousands of watts of surge power, make the voltage clamp of two interpolars in a predetermined value,
Play a part of further lightning protection；When the surge that induced lightening brings than it is larger when, and be insufficient to allow fuse scaling loss, due to excessive
Surge can also damage DC/DC modules, so be provided with clamping protection unit 3, for absorbing surge, clamping protection list includes string
The first piezo-resistance RV1 and the second piezo-resistance RV2 that connection is arranged, and the first piezo-resistance and the coupling of the second piezo-resistance RV2
Node ground connection, piezo-resistance is a kind of resistance device with nonlinear wind vibration, is mainly used in bearing overvoltage in circuit
Shi Jinhang voltage clampings, absorb unnecessary electric current to protect Sensitive Apparatus, and the voltage in the setting system of piezo-resistance is not herein
Rising, played a protective role in the way of clamping；Through the voltage of clamping protection unit 3, because there is suction in prime
Sordid situation is received, so being provided with residual voltage protection location 5, the residual voltage protection location is arranged in series TVS1, and (transient voltage presses down
Diode processed) and TVS2, the TVS1 and TVS2 coupling node ground connection, it is using TVS when there is surge pulse voltage, two-way
The rapid Zener breakdown of breakdown diode energy, is changed into low resistive state from high-impedance state, surge voltage is shunted and is clamped, so as to
DC/DC power modules are protected not damaged by moment surge pulse voltage, to play lightning protection effect, in clamping protection unit 3 and residual
A decoupling unit 4 is provided between pressure protection location 5, the decoupling unit 4 so can ensure that pincers with time delay is played a part of
Position protection location 3 is set to common mode inductance than the 5 first action of residual voltage protection location, the decoupling unit 4, and common mode inductance can ensure that pincers
Position protection location 3 than the first action of residual voltage protection location 5, while, moreover it is possible to effectively suppression common mode is disturbed to DC/DC power module shadows
Ring.
Embodiment 3,
With reference to shown in Fig. 5, the DC/DC power modules with lightning protection, as different from Example 2, the first pressure-sensitive electricity
A gas-discharge tube is serially connected between resistance RV1 and the node and ground of the coupling of the second piezo-resistance RV2, due to piezo-resistance not
Stability, the application of long-time high temperature can cause leakage current to increase, cheap piezo-resistance inferior, it is also possible to blast of generating heat, and be
Solve this problem and gas-discharge tube is sealed between piezo-resistance, the piezo-resistance selects Zinc-oxide piezoresistor, zinc oxide
Piezo-resistance has low cost, and resistance discharge capacity is big, and residual voltage is relatively low, and the reaction time is fast, is nS levels（Less than or equal to 25）, be with
With electric current, but Zinc-oxide piezoresistor with affecting big into temperature the characteristics of, and due to the setting of gas-discharge tube, thus this
One problem is not just problem, while security is improved saves cost.
Embodiment 4,
With reference to shown in Fig. 6, the DC/DC power modules with lightning protection, as different from Example 2, residual voltage protection is single
Unit 5 is arranged in series the node ground connection of the first electric capacity C4 and the second electric capacity C5, the first electric capacity C4 and the second electric capacity C5 coupling, when
When voltage is added between two metal electrodes, will store electric charge on electrode, so capacitor is energy-storage travelling wave tube, using capacitor
This characteristic is absorbing residual voltage.
Embodiment 5,
With reference to shown in Fig. 7, the DC/DC power modules with lightning protection, as different from Example 4, the first pressure-sensitive electricity
A gas-discharge tube is serially connected between resistance RV1 and the node and ground of the coupling of the second piezo-resistance RV2, due to piezo-resistance not
Stability, the application of long-time high temperature can cause leakage current to increase, cheap piezo-resistance inferior, it is also possible to blast of generating heat, and be
Solve this problem and gas-discharge tube is sealed between piezo-resistance, the piezo-resistance selects Zinc-oxide piezoresistor, zinc oxide
Piezo-resistance has low cost, and resistance discharge capacity is big, and residual voltage is relatively low, and the reaction time is fast, is nS levels（Less than or equal to 25）, be with
With electric current, but Zinc-oxide piezoresistor with affecting big into temperature the characteristics of, and due to the setting of gas-discharge tube, thus this
One problem is not just problem, while security is improved saves cost.
This specific embodiment is only which is not to restriction of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification for not having creative contribution after this specification is read as needed to the present embodiment, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (10)
1. the DC/DC power modules with lightning protection, including DC/DC power module bodies, it is characterised in that：Including
Lightning protection unit (1), is coupled to the input of power supply, when induced lightening brings surge excessive, the lightning protection list
First (1) disconnects；
Clamping protection unit (3), is coupled to the first lightning protection unit (1), when the surge that induced lightening brings be insufficient to allow it is described
When lightning protection unit (1) disconnects, the clamping protection unit (3) absorbs surge；
Residual voltage protection location (5), is coupled between clamping protection unit (3) and DC/DC power module bodies, described for absorbing
The remaining residual voltage of clamping protection unit (3).
2. DC/DC power modules with lightning protection according to claim 1, it is characterised in that：The lightning protection
Unit (1) is including the fuse for being coupled to power input.
3. DC/DC power modules with lightning protection according to claim 1, it is characterised in that：The lightning protection
Also include input protection location between unit (1) and clamping protection unit (3), the input protection location includes what is be arranged in parallel
Filter capacitor and Transient Suppression Diode.
4. DC/DC power modules with lightning protection according to claim 1, it is characterised in that：The clamping protection
Unit (3) includes the first piezo-resistance and the second piezo-resistance being arranged in series, first piezo-resistance and the second pressure-sensitive electricity
The node ground connection of resistance coupling.
5. DC/DC power modules with lightning protection according to claim 4, it is characterised in that：Described first is pressure-sensitive
A gas-discharge tube is serially connected between resistance and the node and ground of the coupling of the second piezo-resistance.
6. DC/DC power modules with lightning protection according to claim 5, it is characterised in that：Described first is pressure-sensitive
Resistance and the second piezo-resistance are Zinc-oxide piezoresistor.
7. DC/DC power modules with lightning protection according to claim 1, it is characterised in that：The clamping protection
Decoupling unit (4) is coupled between unit (3) and residual voltage protection location (5).
8. DC/DC power modules with lightning protection according to claim 7, it is characterised in that：The decoupling unit
(4) it is set to common mode inductance.
9. DC/DC power modules with lightning protection according to claim 1, it is characterised in that：The residual voltage protection
Unit (5) is grounded for the node for being arranged in series a TVS and the 2nd TVS, a TVS and the 2nd TVS coupling.
10. DC/DC power modules with lightning protection according to claim 1, it is characterised in that：The residual voltage protection
Unit (5) is the node ground connection of the first electric capacity and the second electric capacity being arranged in series, first electric capacity and the coupling of the second electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537014.1U CN206076928U (en) | 2016-06-03 | 2016-06-03 | DC/DC power modules with lightning protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537014.1U CN206076928U (en) | 2016-06-03 | 2016-06-03 | DC/DC power modules with lightning protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206076928U true CN206076928U (en) | 2017-04-05 |
Family
ID=58420909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620537014.1U Expired - Fee Related CN206076928U (en) | 2016-06-03 | 2016-06-03 | DC/DC power modules with lightning protection |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017605A (en) * | 2017-04-07 | 2017-08-04 | 广州市晶卓照明科技有限公司 | Earth leakage protective device |
| CN109462219A (en) * | 2018-11-30 | 2019-03-12 | 广州海格通信集团股份有限公司 | A kind of electrical system surge voltage-suppressing circuit and its surging voltage suppressing method |
| CN111934303A (en) * | 2020-09-22 | 2020-11-13 | 中国电子科技网络信息安全有限公司 | Strong electromagnetic pulse protection device of vehicle electric control system |
-
2016
- 2016-06-03 CN CN201620537014.1U patent/CN206076928U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017605A (en) * | 2017-04-07 | 2017-08-04 | 广州市晶卓照明科技有限公司 | Earth leakage protective device |
| CN109462219A (en) * | 2018-11-30 | 2019-03-12 | 广州海格通信集团股份有限公司 | A kind of electrical system surge voltage-suppressing circuit and its surging voltage suppressing method |
| CN111934303A (en) * | 2020-09-22 | 2020-11-13 | 中国电子科技网络信息安全有限公司 | Strong electromagnetic pulse protection device of vehicle electric control system |
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| CF01 | Termination of patent right due to non-payment of annual fee |