CN203967979U - Multifunction protection low ripple doubleway output electromagnetic compatibility power module - Google Patents
Multifunction protection low ripple doubleway output electromagnetic compatibility power module Download PDFInfo
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- CN203967979U CN203967979U CN201420347894.7U CN201420347894U CN203967979U CN 203967979 U CN203967979 U CN 203967979U CN 201420347894 U CN201420347894 U CN 201420347894U CN 203967979 U CN203967979 U CN 203967979U
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- 230000004224 protection Effects 0.000 title claims abstract description 42
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 3
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- 239000000463 material Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 4
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- 238000007689 inspection Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009993 protective function Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 208000031361 Hiccup Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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Abstract
The utility model discloses a kind of multifunction protection low ripple doubleway output electromagnetic compatibility power module; described power module is by shell, DC/DC inverter power circuit, multifunctional protection circuit and filter circuit is integrated forms; the mode that adopts frame mode, power module input and the output of metal shell full-shield to increase filter circuit to realize a control chip of index, DC/DC converter using with utmost point low ripple and control simultaneously doubleway output, the output of every road can realize the function of the different voltage of output and different capacity.The utility model power module adopts integral design; have that Electro Magnetic Compatibility is good, defencive function is complete, two-way can different voltage and the function of power stage, thereby meet power module doubleway output, have the occasion of higher reliability, EMC Requirements.
Description
Technical field
The utility model relates to a kind of power module, specifically, relates to a kind of multifunction protection low ripple doubleway output electromagnetic compatibility power module.
Background technology
Under normal circumstances, the compatible power supply of combined electromagnetic comprises input filter, DC/DC converter and output filter, adopt the scheme of split shielding, it can meet the basic demand of electromagnetic compatibility, power, technical indicator, but aspect volume, efficiency and reliability, be not easy to realize optimization, and defencive function is simple, if require more defencive function, need peripheral components, and volume is relatively large; For the power supply that requires doubleway output, need every road to repeat split shielding, input and the output of each power module add filter, amount to 4, and power supply is volume required larger.Need under special circumstances small size, the complete and high reliability doubleway output DC/DC power module product of low cost, defencive function.
Utility model content
A kind of multifunction protection low ripple doubleway output electromagnetic compatibility power module that the utility model designs in order to solve the problems of the technologies described above just.
The utility model solves the technical scheme that its technical problem adopts:
A kind of multifunction protection low ripple doubleway output electromagnetic compatibility power module, comprises filter circuit, transformer, pwm chip, rectification circuit and feedback and protective circuit; This module adopts two groups of a pwm chip to drive the staggered switching tube of controlling two groups of loop of power circuit of opening simultaneously, and two groups of transformer independence storage power, by loop of power circuit output energy separately, provide the output voltage of two groups of isolation; Power module adopts integrated design, and integrated point of chamber screening can is divided into four shielding cavities, and first is importation cavity, comprises input filter circuit; Second is power inverter cavity, comprises DC/DC converter, control circuit, protective circuit and power conversion circuit; The 3rd is output 1 part cavity, comprises output filter circuit; The 4th is output 2 part cavitys, comprises output filter circuit.
Described multifunction protection low ripple doubleway output electromagnetic compatibility power module, its filter common mode inductance adopts the small size inductance of efficient ferrite and ultracrystallite material.
Described multifunction protection low ripple doubleway output electromagnetic compatibility power module, a control chip is controlled the mode of doubleway output simultaneously, adopts interleaving inverse excitation circuit topology circuit, and two-way output is separate.
Described multifunction protection low ripple doubleway output electromagnetic compatibility power module, this module comprises input overvoltage, under-voltage protecting circuit and the protection of input Inrush current restraining, output overcurrent, short circuit, overvoltage crowbar.
The feature of described multifunction protection low ripple doubleway output electromagnetic compatibility power module is:
1, power module input and output isolation; adopt shell mechanism, input and the output of all-metal shielding to increase filter circuit to make it have better Electro Magnetic Compatibility, control chip of DC/DC converter using and control simultaneously the mode of doubleway output; the output of every road can realize the function of the different voltage of output and different capacity; power module has Multifunctional protective protective function; there is higher reliability, input voltage covering DC9-DC80V; output voltage covers DC3.3V-DC36V(two-way), Qi Mei road peak power output is 15W.
2, power module is output as isolation method, and isolation voltage is not less than DC500V;
3, the integrated all-metal screening can of power module design, has good anti-emitted radiation Electro Magnetic Compatibility;
4, power module input has increased filter circuit with output, and output ripple is low, has good anti-conduct radiation Electro Magnetic Compatibility;
5, control chip of DC/DC converter using is controlled the mode of doubleway output simultaneously, and the output of every road can realize the function of the different voltage of output and different capacity;
6, power module has input overvoltage, under-voltage protection; The protection of input Inrush current restraining, output overcurrent, short circuit, overvoltage protection; The multifunction protections such as overtemperature protection,
The beneficial effects of the utility model are that power module shell adopts metal shell, input and output have increased π type filter circuit, independent without additional device self, can be by CE102, CS101, RE102, tetra-EMC Requirements of RS103 in GJB151A; The integrated design of power module, defencive function is complete, components and parts are few, has high reliability; With installing hole, adopt natural heat dissipation and two kinds of modes of heat loss through conduction, without additional cooling measure; Standardization, tandem product design, can adapt to the parameter requests such as most of input voltage, output voltage and power, and adaptability is wider.
Brief description of the drawings
Control chip of Fig. 1 is controlled doubleway output theory diagram simultaneously.
Fig. 2 power module electromagnetic compatibility power circuit basic structure block diagram.
Fig. 3 power module schematic diagram.
The outline drawing of Fig. 4 power module.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As depicted in figs. 1 and 2, a kind of multifunction protection low ripple doubleway output electromagnetic compatibility power module, comprises filter circuit, transformer, pwm chip, rectification circuit and feedback and protective circuit; This module adopts two groups of a pwm chip to drive the staggered switching tube of controlling two groups of loop of power circuit of opening simultaneously, and two groups of transformer independence storage power, by loop of power circuit output energy separately, provide the output voltage of two groups of isolation; Power module adopts integrated design, and integrated point of chamber screening can is divided into four shielding cavities, and first is importation cavity, comprises input filter circuit; Second is power inverter cavity, comprises DC/DC converter, control circuit, protective circuit and power conversion circuit; The 3rd is output 1 part cavity, comprises output filter circuit; The 4th is output 2 part cavitys, comprises output filter circuit.
Described multifunction protection low ripple doubleway output electromagnetic compatibility power module, its filter common mode inductance adopts the small size inductance of efficient ferrite and ultracrystallite material.
Described multifunction protection low ripple doubleway output electromagnetic compatibility power module, a control chip is controlled the mode of doubleway output simultaneously, adopts interleaving inverse excitation circuit topology circuit, and two-way output is separate.
Described multifunction protection low ripple doubleway output electromagnetic compatibility power module, this module comprises input overvoltage, under-voltage protecting circuit and the protection of input Inrush current restraining, output overcurrent, short circuit, overvoltage crowbar.
The utility model operation principle is as shown in Figure 3: power module main control chip has two to examine independently flow control signals, the current detecting that two loop of power circuit of input are flowed through by inspection leakage resistance R2 and R25 goes out inspection stream voltage signal, by the inspection stream voltage signal detecting and main control chip have two independently inspection flow pin CS1 and CS2 is connected, examine the comparison of stream signal in main control chip inside, control the control of master chip inside, control chip frequent starting, power module output voltage is dropping after setting up, repeat, in the formula state of having the hiccups, thereby realize power module overcurrent protection function.Power module output short-circuit is also a kind of extreme case of overcurrent, and its operation principle is the same with overcurrent protection principle, and supports long-time short-circuit protection, so can well protection power source module for power supply rear class equipment.
When voltage-stabiliser tube D1 and D2 value are set in the overvoltage of power module output voltage; optocoupler internal body diodes part conducting working stability is to voltage-stabiliser tube D1 and D2 value; other end triode part control chip inside, controls power module duty ratio, realizes power module output over-voltage protection function.
Power module input overvoltage protection; by divider resistance R38 and reference resistance R39 set input over-voltage protection point; in the time of input voltage high pressure over-voltage protection point; the inner amplifier conducting of fiducial chip TL431, is pulled down to 0V by pre-inside modules steady 12V voltage, during due to the inner pre-steady 12V power supply of power module, powers to control chip; in the time that the pre-steady 12V voltage in inside is pulled down to 0V; Master control chip, without supply power voltage, is not worked, power module no-output voltage.
Power module main control chip has under-voltage protection pin (UVLO); input positive divider resistance R27, R28, R29 by power module and get voltage to under-voltage pin (UVLO); when this pin place voltage is during lower than 1.25V; power module under-voltage protection no-output, power module is realized under-voltage protection function.
General power module is without surge current suppression circuit; its startup moment input surge current is generally input the more than 10 times of rated current; so easily cause entering overcurrent protection state to the primary power source of this power module power supply, cause whole electric power system operate portions normal.So this power module is inner integrated input in-rush current limiting circuit, power module energising moment, input return line is 20 Europe restriction input instant starting currents through resistance R 34, resistance R 36 is charged to capacitor C 32 with resistance R 36 dividing potential drops, when capacitor C 32 charging voltages reach metal-oxide-semiconductor gate-on voltage, metal-oxide-semiconductor conducting, be only that 10 milliohms are to 20 milliohms because its metal-oxide-semiconductor inside self conducting internal resistance is very little, after in parallel with R34, resistance is approximately 10 milliohms to 20 milliohms, the step-down of input end line is negligible, realize input Inrush current restraining by this circuit, its startup moment surge current is only 2 times of left and right of input rated current, protection is not subject to surge current impact to the primary power source of power module power supply, ensure the normal work of device systems power supply.
Power module Master control chip self is with overheat protective function, and in the time of Master control chip junction temperature hot high pressure protection temperature, Master control chip is not worked, power module no-output.
Power module adopts integral design, and its profile is shown in Fig. 4.
The utility model is not limited to above-mentioned preferred forms, and other any or akin products identical with the utility model that anyone draws under enlightenment of the present utility model, within all dropping on protection range of the present utility model.
Claims (4)
1. a multifunction protection low ripple doubleway output electromagnetic compatibility power module, comprises filter circuit, transformer, pwm chip, rectification circuit and feedback and protective circuit; It is characterized in that: this module adopts two groups of a pwm chip to drive the staggered switching tube of controlling two groups of loop of power circuit of opening simultaneously, two groups of transformer independence storage power, by loop of power circuit output energy separately, provide the output voltage of two groups of isolation; Power module adopts integrated design, and integrated point of chamber screening can is divided into four shielding cavities, and first is importation cavity, comprises input filter circuit; Second is power inverter cavity, comprises DC/DC converter, control circuit, protective circuit and power conversion circuit; The 3rd is output 1 part cavity, comprises output filter circuit; The 4th is output 2 part cavitys, comprises output filter circuit.
2. multifunction protection low ripple doubleway output electromagnetic compatibility power module according to claim 1, is characterized in that: filter common mode inductance adopts the small size inductance of efficient ferrite and ultracrystallite material.
3. multifunction protection low ripple doubleway output electromagnetic compatibility power module according to claim 1, is characterized in that: a control chip is controlled the mode of doubleway output simultaneously, adopts interleaving inverse excitation circuit topology circuit, and two-way output is separate.
4. multifunction protection low ripple doubleway output electromagnetic compatibility power module according to claim 1, is characterized in that: this power module comprises input overvoltage, under-voltage protecting circuit and the protection of input Inrush current restraining, output overcurrent, short circuit, overvoltage crowbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347894.7U CN203967979U (en) | 2014-06-27 | 2014-06-27 | Multifunction protection low ripple doubleway output electromagnetic compatibility power module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347894.7U CN203967979U (en) | 2014-06-27 | 2014-06-27 | Multifunction protection low ripple doubleway output electromagnetic compatibility power module |
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| CN203967979U true CN203967979U (en) | 2014-11-26 |
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| CN201420347894.7U Expired - Lifetime CN203967979U (en) | 2014-06-27 | 2014-06-27 | Multifunction protection low ripple doubleway output electromagnetic compatibility power module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787681A (en) * | 2017-01-04 | 2017-05-31 | 重庆长安汽车股份有限公司 | A kind of DC/DC converting means |
| CN106856378A (en) * | 2017-01-11 | 2017-06-16 | 广东百事泰电子商务股份有限公司 | Intelligent half-bridge sine voltage change-over circuit based on PFC interleaving inverse excitations |
| CN107979290A (en) * | 2017-12-28 | 2018-05-01 | 航天长峰朝阳电源有限公司 | One kind starts time-adjustable power module |
| CN109066892A (en) * | 2018-09-10 | 2018-12-21 | Oppo广东移动通信有限公司 | Fission screen electronic equipment charging circuit and charge control method |
| CN113708617A (en) * | 2021-08-20 | 2021-11-26 | 北京计算机技术及应用研究所 | High-power-density DC/DC power module integrated with EMI filtering |
-
2014
- 2014-06-27 CN CN201420347894.7U patent/CN203967979U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787681A (en) * | 2017-01-04 | 2017-05-31 | 重庆长安汽车股份有限公司 | A kind of DC/DC converting means |
| CN106856378A (en) * | 2017-01-11 | 2017-06-16 | 广东百事泰电子商务股份有限公司 | Intelligent half-bridge sine voltage change-over circuit based on PFC interleaving inverse excitations |
| WO2018129825A1 (en) * | 2017-01-11 | 2018-07-19 | 广东百事泰电子商务股份有限公司 | Smart half-bridge sine-wave voltage conversion circuit based on pfc interleaved flyback |
| CN107979290A (en) * | 2017-12-28 | 2018-05-01 | 航天长峰朝阳电源有限公司 | One kind starts time-adjustable power module |
| CN109066892A (en) * | 2018-09-10 | 2018-12-21 | Oppo广东移动通信有限公司 | Fission screen electronic equipment charging circuit and charge control method |
| CN113708617A (en) * | 2021-08-20 | 2021-11-26 | 北京计算机技术及应用研究所 | High-power-density DC/DC power module integrated with EMI filtering |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20141126 |