CN104052285A - DC power supply converter board - Google Patents
DC power supply converter board Download PDFInfo
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- CN104052285A CN104052285A CN201410098290.8A CN201410098290A CN104052285A CN 104052285 A CN104052285 A CN 104052285A CN 201410098290 A CN201410098290 A CN 201410098290A CN 104052285 A CN104052285 A CN 104052285A
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Abstract
The invention discloses a DC power supply converter board which comprises a power supply input module, a first chip, a first voltage output module, a second chip and a second voltage output module. The output end of the power supply input module is connected with an EMI filter circuit, the EMI filter circuit is provided with a high-frequency output end and a low-frequency output end, the high-frequency output end is connected with the input end of the first chip, and the low-frequency output end is connected with the input end of the second chip. The output end of the first chip is connected to the input end of the first voltage output module to form a first power supply converter circuit, the output end of the second chip is connected to the input end of the second voltage output module to form a second power supply converter circuit, and the first power supply converter circuit and the second power supply converter circuit are integrated on the same circuit board. By adopting the mode, two types of output voltages are formed on one circuit board through wide voltage input, the size and volume of the circuit board are decreased, and the system running reliability can be ensured.
Description
Technical field
The present invention 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, by supply socket, power to realize charging 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 the demand that plate can not meet client, 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.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of DC power conversion board, and the present invention forms two kinds of output voltages with a kind of wide voltage input on a circuit board, has reduced circuit board size and volume, and can guarantee system reliability of operation.
For solving the problems of the technologies described above, the technical scheme that the present invention 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 invention, described the first chip adopts KA3525, and described the second chip adopts MP1484.
In a preferred embodiment of the present invention, 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, from the first output unit, exporting.
In a preferred embodiment of the present invention, 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 invention has the beneficial effects as follows: 1, the first chip KA3525 and the second chip MP1484 are when 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 in galvanic mode, export, in second voltage output module, be provided with rectification unit, also in galvanic mode, export, thus the system of assurance 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.
Accompanying drawing explanation
Fig. 1 is the module diagram of the present invention 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, the 4, second chip, the 5, first Voltage-output module, 6, second voltage output module, 51, voltage transformation unit, 52, rectification filtering unit, the 53, first output unit, 61, rectification unit, the 62, second output unit.
Embodiment
The present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
With reference to figure 1-Fig. 3 in an embodiment of the present invention, 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 power supply be detected when 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, from the first output unit 53, exporting.
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, from the second output unit 62, with direct current, exports.
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 in 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 guarantee whole system reliability of operation.
Further illustrate again, by the second source change-over circuit that the first power-switching circuit consisting of the first chip 3, the first Voltage-output module 5 and the second chip 4, second voltage output module 6 are formed, be integrated on same circuit board, 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 embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention 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 invention.
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 supply dress claimed in claim 1, change plate, 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, from the first output unit, exporting.
4. according to DC power supply dress claimed in claim 1, change plate, 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 |
|---|---|---|---|
| CN201410098290.8A CN104052285B (en) | 2014-03-18 | 2014-03-18 | D/C power change-over panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098290.8A CN104052285B (en) | 2014-03-18 | 2014-03-18 | D/C power change-over panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104052285A true CN104052285A (en) | 2014-09-17 |
| CN104052285B CN104052285B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410098290.8A Active CN104052285B (en) | 2014-03-18 | 2014-03-18 | D/C power change-over panel |
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| CN (1) | CN104052285B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465130A (en) * | 2001-06-29 | 2003-12-31 | 薛承基 | Active common mode emi filter mitigating conducted electromagnetic interference |
| CN201307776Y (en) * | 2008-11-19 | 2009-09-09 | 南京硕冠科技实业有限公司 | Intelligent four-section charger |
| CN102255609A (en) * | 2010-05-17 | 2011-11-23 | 上海交泰信息科技有限公司 | Low temperature cofired ceramic (LTCC)-process-based duplexer with novel structure |
| CN202435263U (en) * | 2012-02-23 | 2012-09-12 | 福建捷联电子有限公司 | Power adapter |
| CN103078490A (en) * | 2011-10-25 | 2013-05-01 | 苹果公司 | Noise suppression circuit for power adapter |
| CN202979430U (en) * | 2012-08-20 | 2013-06-05 | 黄鹏云 | Electronic ballast for miniwatt low power factor separate excitation metal halide lamp |
| CN203872057U (en) * | 2014-03-18 | 2014-10-08 | 江苏中利电子信息科技有限公司 | DC power convertor board |
-
2014
- 2014-03-18 CN CN201410098290.8A patent/CN104052285B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465130A (en) * | 2001-06-29 | 2003-12-31 | 薛承基 | Active common mode emi filter mitigating conducted electromagnetic interference |
| CN201307776Y (en) * | 2008-11-19 | 2009-09-09 | 南京硕冠科技实业有限公司 | Intelligent four-section charger |
| CN102255609A (en) * | 2010-05-17 | 2011-11-23 | 上海交泰信息科技有限公司 | Low temperature cofired ceramic (LTCC)-process-based duplexer with novel structure |
| CN103078490A (en) * | 2011-10-25 | 2013-05-01 | 苹果公司 | Noise suppression circuit for power adapter |
| CN202435263U (en) * | 2012-02-23 | 2012-09-12 | 福建捷联电子有限公司 | Power adapter |
| CN202979430U (en) * | 2012-08-20 | 2013-06-05 | 黄鹏云 | Electronic ballast for miniwatt low power factor separate excitation metal halide lamp |
| CN203872057U (en) * | 2014-03-18 | 2014-10-08 | 江苏中利电子信息科技有限公司 | DC power convertor board |
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| Publication number | Publication date |
|---|---|
| CN104052285B (en) | 2017-12-01 |
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Address after: 215500 Jiangsu Province, Changshou City Shajiabang town Changkun Industrial Park Road 1, building 9, Teng Hui Applicant after: Jiangsu Zhongli Electronic Information Technology Co., Ltd. Address before: 215500 Changshu Economic Development Zone, Jiangsu, Hong Kong Road, No. 88, No. Applicant before: Jiangsu Zhongli Electronic Information Technology Co., Ltd. |
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