CN203872057U - DC power convertor board - Google Patents
DC power convertor board Download PDFInfo
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- CN203872057U CN203872057U CN201420119753.XU CN201420119753U CN203872057U CN 203872057 U CN203872057 U CN 203872057U CN 201420119753 U CN201420119753 U CN 201420119753U CN 203872057 U CN203872057 U CN 203872057U
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Abstract
The utility model discloses a DC power convertor board, which comprises a power input module, a first chip, a first voltage output module, a second chip and a second voltage output module. An input terminal of the power input module is connected with an EMI filter circuit which is provided with a high-frequency output terminal and a low-frequency output terminal. The high-frequency output terminal is connected to an input terminal of the first chip, and the low-frequency output terminal is connected with an input terminal of the second chip. An output terminal of the first chip is connected with an input terminal of the first voltage output module to form a first power conversion circuit, and an output terminal of the second chip is connected with an input terminal of the second voltage output module to form a second power conversion circuit. The first and the second power conversion circuits are integrated on the same circuit board. Via the above way, the DC power convertor board forms two output voltages with one wide voltage input on the single circuit board, so that the size and volume of the circuit board are reduced, and reliable system operation can be ensured.
Description
Technical field
The utility model relates to a kind of electronic information field, particularly a kind of DC power conversion board.
Background technology
Along with scientific and technical development, requisite thing during increasing electronic product becomes on market or people live, as everyone knows, a lot of electronic products in use all need charging, and be no matter directly to fill or seat fills, in charging process, all to pass through power supply changeover device, power to realize charging by supply socket again, and in the prior art, it is all the power conversion board based on single-input single-output, in miniaturization instantly, under integrated technology trends, this type of power supply dress changes plate and can not meet client's demand, its major defect is: can only single-input single-output, usable range is little, and power conversion board size, volume is larger, quiescent dissipation is large, caloric value also compared with large and while causing system operation reliability low.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of DC power conversion board, and the utility model forms two kinds of output voltages with the wide voltage input of one on a circuit board, has reduced circuit board size and volume, and can ensure system reliability of operation.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of DC power conversion board is provided, comprise: Power Entry Module, the first chip, the first Voltage-output module, the second chip and second voltage output module, the output of described Power Entry Module is connected with EMI filter circuit, described EMI filter circuit is provided with high frequency output end and low frequency output, described high frequency output end is connected with the input of described the first chip, described low frequency output is connected with the input of described the second chip, the input that the output of described the first chip is connected in described the first Voltage-output module forms the first power-switching circuit, the input that the output of described the second chip is connected in described second voltage output module forms second source change-over circuit, described the first power-switching circuit and described second source change-over circuit are integrated on same circuit board.
In a preferred embodiment of the present utility model, described the first chip adopts KA3525, and described the second chip adopts MP1484.
In a preferred embodiment of the present utility model, described the first Voltage-output module comprises: voltage transformation unit, rectification filtering unit and the first output unit, described voltage transformation unit is connected to the output of described the first chip, after voltage transformation unit transformation, enter rectification filtering unit, after ripple component in direct current after filtering rectification, exporting from the first output unit.
In a preferred embodiment of the present utility model, described second voltage output module comprises: rectification unit and the second output unit, rectification unit is connected to the output of described the second chip, exports after entering rectification unit rectification from the second output unit with direct current.
The beneficial effects of the utility model are: 1, the first chip KA3525 and the second chip MP1484 are in the time power supply being detected in unloaded transition, can automatically drop into a underload, resistance value is larger, can maintain output voltage is that set-point, power loss own are again less, thereby reduces quiescent dissipation and caloric value;
2, before the output unit in the first Voltage-output module, be added with rectification filtering unit, can be by the ripple component filtering in high-frequency current, finally export in galvanic mode, in second voltage output module, be provided with rectification unit, also export in galvanic mode, thus the system of guarantee reliability of operation;
3, the first power-switching circuit and second source change-over circuit are integrated on same circuit board, make a kind of wide voltage formation on same circuit board have two kinds of different output voltages, have reduced size and the volume of circuit board.
Brief description of the drawings
Fig. 1 is the module diagram of the utility model in a preferred embodiment;
Fig. 2 is the circuit theory diagrams of the first power supply conversion output module;
Fig. 3 is the circuit theory diagrams that second source transforms output module;
In figure, each assembly and Reference numeral are respectively: 1, Power Entry Module, 2, EMI filter circuit, 3, the first chip, 4, the second chip, 5, the first Voltage-output module, 6, second voltage output module, 51, voltage transformation unit, 52, rectification filtering unit, 53, the first output unit, 61, rectification unit, 62, the second output unit.
Embodiment
The utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection range of the present utility model is made to more explicit defining.
With reference to figure 1-Fig. 3 in embodiment of the present utility model, a kind of DC power conversion board, comprise: Power Entry Module 1, the first chip 3, the first Voltage-output module 5, the second chip 4 and second voltage output module 6, the output of described Power Entry Module 1 is connected with EMI filter circuit 2, described EMI filter circuit 2 is provided with high frequency output end and low frequency output, described high frequency output end is connected with the input of described the first chip 3, described low frequency output is connected with the input of described the second chip 4, the input that the output of described the first chip 3 is connected in described the first Voltage-output module 5 forms the first power-switching circuit, the input that the output of described the second chip 4 is connected in described second voltage output module 6 forms second source change-over circuit, described the first power-switching circuit and described second source change-over circuit are integrated on same circuit board.
Wherein said the first chip 3 adopts KA3525, described the second chip 4 adopts MP1484, adopt this two kinds of chips, can work as and detect that power supply is in the time of unloaded transition, can automatically drop into a underload, resistance value is larger, and can maintain output voltage is that set-point, power loss own are again less, thereby reduces quiescent dissipation and caloric value.。
Described the first Voltage-output module 5 comprises: voltage transformation unit 51, rectification filtering unit 52 and the first output unit 53, described voltage transformation unit 51 is connected to the output of described the first chip 3, after voltage transformation unit 51 transformations, enter rectification filtering unit 52, after ripple component in direct current after filtering rectification, exporting from the first output unit 53.
Described second voltage output module 6 comprises: rectification unit 61 and the second output unit 62, rectification unit 61 is connected to the output of described the second chip 4, after rectification unit 61 rectifications, exports with direct current from the second output unit 62.
Further illustrate, described EMI filter circuit 2 is a blocking-up low frequency signal, the control circuit of conducting high-frequency signal, the high-frequency signal of conducting in, EMI filter circuit 2 is transferred in the first chip 3, and the low frequency signal of filtering in EMI filter circuit 2 is transferred in the second chip 4 by low frequency output.The high-frequency signal voltage of conducting is simultaneously higher, so need to be introduced into the interior transformation of voltage transformation unit 51 to normalization voltage range, and the ripple component in high-frequency signal is more, so add filter unit in rectification unit domestic demand, i.e. described rectification filtering unit 52, finally again in galvanic mode from the interior output of the first output unit 53; And lower through voltage in the low frequency signal of blocking-up, frequency is comparatively stable, therefore only need to by after rectification unit 61 in galvanic mode directly from the interior output of the second output unit 62, thereby can ensure whole system reliability of operation.
Further illustrate again, be integrated on same circuit board by the second source change-over circuit that the first power-switching circuit being made up of the first chip 3, the first Voltage-output module 5 and the second chip 4, second voltage output module 6 are formed, and adopt EMI filter circuit 2 to control the flow direction of low-and high-frequency signal, successfully realized on a circuit board with a wide voltage input and formed two different output voltages, reduce circuit board size and volume.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. a DC power conversion board, it is characterized in that: comprising: Power Entry Module, the first chip, the first Voltage-output module, the second chip and second voltage output module, the output of described Power Entry Module is connected with EMI filter circuit, described EMI filter circuit is provided with high frequency output end and low frequency output, described high frequency output end is connected with the input of described the first chip, described low frequency output is connected with the input of described the second chip, the input that the output of described the first chip is connected in described the first Voltage-output module forms the first power-switching circuit, the input that the output of described the second chip is connected in described second voltage output module forms second source change-over circuit, described the first power-switching circuit and described second source change-over circuit are integrated on same circuit board.
2. DC power conversion board according to claim 1, is characterized in that: described the first chip adopts KA3525, and described the second chip adopts MP1484.
3. according to DC power conversion board claimed in claim 1, its special medical treatment is: described the first Voltage-output module comprises: voltage transformation unit, rectification filtering unit and the first output unit, described voltage transformation unit is connected to the output of described the first chip, after voltage transformation unit transformation, enter rectification filtering unit, after ripple component in direct current after filtering rectification, exporting from the first output unit.
4. according to DC power conversion board claimed in claim 1, its special medical treatment is: described second voltage output module comprises: rectification unit and the second output unit, rectification unit is connected to the output of described the second chip, exports after entering rectification unit rectification from the second output unit with direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119753.XU CN203872057U (en) | 2014-03-18 | 2014-03-18 | DC power convertor board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119753.XU CN203872057U (en) | 2014-03-18 | 2014-03-18 | DC power convertor board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203872057U true CN203872057U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119753.XU Expired - Fee Related CN203872057U (en) | 2014-03-18 | 2014-03-18 | DC power convertor board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203872057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052285A (en) * | 2014-03-18 | 2014-09-17 | 江苏中利电子信息科技有限公司 | DC power supply converter board |
| CN110138219A (en) * | 2018-06-13 | 2019-08-16 | 任志广 | Digital voltage regulation module applied to high voltage power supply |
-
2014
- 2014-03-18 CN CN201420119753.XU patent/CN203872057U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052285A (en) * | 2014-03-18 | 2014-09-17 | 江苏中利电子信息科技有限公司 | DC power supply converter board |
| CN104052285B (en) * | 2014-03-18 | 2017-12-01 | 江苏中利电子信息科技有限公司 | D/C power change-over panel |
| CN110138219A (en) * | 2018-06-13 | 2019-08-16 | 任志广 | Digital voltage regulation module applied to high voltage power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 |