CN204089619U - Thin high-power programmable DC power supply - Google Patents
Thin high-power programmable DC power supply Download PDFInfo
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- CN204089619U CN204089619U CN201420345570.XU CN201420345570U CN204089619U CN 204089619 U CN204089619 U CN 204089619U CN 201420345570 U CN201420345570 U CN 201420345570U CN 204089619 U CN204089619 U CN 204089619U
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- phasing commutator
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Abstract
The utility model discloses a kind of thin high-power programmable DC power supply, comprise power factor corrector, A phasing commutator, B phasing commutator, output rectification filter device, current sampling resistor, current amplifier, error amplifier, pulse width modulator, voltage amplifier, digital to analog converter, single-chip microcomputer, communication interface and analog to digital converter.Pulse width modulator in the utility model exports two-way drive singal, drive A phasing commutator and the alternation of B phasing commutator respectively, relative to the circuit only using a converter, the small volume of its switch transformer, height dimension reduces, and makes power supply of the present utility model can export the power of 1500W under the height dimension of 44mm.The output of the utility model power supply can be controlled by outer computer, is easy to build Auto-Test System.
Description
Technical field
The utility model relates to technical field of direct current power, refers to a kind of thin high-power programmable DC power supply particularly.
Background technology
D.C. regulated power supply is the most frequently used a kind of electronic instrument, the adjustable D.C. regulated power supply of traditional output is all linear power supply, volume and weight is all very large, and be all controlled by the output of button or Switch Controller power supply on front panel, with potentiometer, output voltage and electric current are regulated, be unfavorable for working under automatic test occasion etc. does not need the testing experiment condition of intervening manually.
Utility model content
The purpose of this utility model is exactly to provide a kind of thin high-power programmable DC Switching Power Supply of being undertaken controlling, volume weight is less by outer computer.
For realizing this object, thin high-power programmable DC power supply designed by the utility model, comprise power factor corrector, A phasing commutator, B phasing commutator, output rectification filter device, current sampling resistor, current amplifier, error amplifier, pulse width modulator, voltage amplifier, digital to analog converter, single-chip microcomputer, communication interface and analog to digital converter, wherein, the input of AC power access power factor correction device, the input of output access A phasing commutator of power factor corrector and the input of B phasing commutator, the output of A phasing commutator connects power supply output cathode end by output rectification filter device, the output of B phasing commutator connects one end of current sampling resistor by output rectification filter device, the other end of current sampling resistor connects power supply output negative pole end,
Two signal input parts of described current amplifier are connected to the two ends of current sampling resistor, the signal output part of current amplifier connects the signal input part of error amplifier, two signal input parts of voltage amplifier connect power supply output cathode end and power supply output negative pole end respectively, the signal output part of voltage amplifier connects the signal input part of error amplifier, the signal output part of error amplifier connects the signal input part of pulse width modulator, two signal output parts of pulse width modulator connect the signal controlling end of A phasing commutator and the signal controlling end of B phasing commutator respectively,
The communication ends of described digital to analog converter, communication interface and analog to digital converter all accesses single-chip microcomputer, the signal output part of described digital to analog converter connects the signal input part of error amplifier, the signal output part of described current amplifier and the signal output part signal input part that connection mode number converter is corresponding respectively of voltage amplifier.
The beneficial effects of the utility model:
1. the output of the utility model power supply can be controlled by outer computer, is easy to build Auto-Test System.
2. the pulse width modulator in the utility model exports two-way drive singal, drive A phasing commutator and the alternation of B phasing commutator respectively, relative to the circuit only using a converter, the power of a switch transformer born by the utility model two switch transformers, the height dimension of switch transformer reduces, and makes power supply of the present utility model can export the power of 1500W under the height dimension of 44mm.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model;
Wherein, 1-power factor corrector, 2-A phasing commutator, 3-B phasing commutator, 4-output rectification filter device, 5-current sampling resistor, 6-current amplifier, 7-error amplifier, 8-pulse width modulator, 9-voltage amplifier, 10-digital to analog converter, 11-single-chip microcomputer, 12-communication interface, 13-analog to digital converter, 14-alternating current filter, 15-output DLL (dynamic link library) equipment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Thin high-power programmable DC power supply as shown in Figure 1, comprise power factor corrector 1, A phasing commutator 2, B phasing commutator 3, output rectification filter device 4, current sampling resistor 5, current amplifier 6, error amplifier 7, pulse width modulator 8, voltage amplifier 9, digital to analog converter 10, single-chip microcomputer 11, communication interface 12 and analog to digital converter 13, wherein, the input of AC power access power factor correction device 1, the input of output access A phasing commutator 2 of power factor corrector 1 and the input of B phasing commutator 3, the output of A phasing commutator 2 connects power supply output cathode end V+ by output rectification filter device 4, the output of B phasing commutator 3 connects one end of current sampling resistor 5 by output rectification filter device 4, the other end of current sampling resistor 5 connects power supply output negative pole end V-, above-mentioned power factor corrector 1 is for being transformed to direct current common rail voltage by AC power,
Two signal input parts of described current amplifier 6 are connected to the two ends of current sampling resistor 5, the signal output part of current amplifier 6 connects the signal input part of error amplifier 7, two signal input parts of voltage amplifier 9 connect power supply output cathode end and power supply output negative pole end respectively, the signal output part of voltage amplifier 9 connects the signal input part of error amplifier 7, the signal output part of error amplifier 7 connects the signal input part of pulse width modulator 8, two signal output parts of pulse width modulator 8 connect the signal controlling end of A phasing commutator 2 and the signal controlling end of B phasing commutator 3 respectively,
The communication ends of described digital to analog converter 10, communication interface 12 and analog to digital converter 13 all accesses single-chip microcomputer 11, the signal output part of described digital to analog converter 10 connects the signal input part of error amplifier 7, the signal input part of the signal output part of described current amplifier 6 and signal output part difference connection mode number converter 13 correspondence of voltage amplifier 9.
In technique scheme, it also comprises alternating current filter 14, and described AC power is by the signal input part of alternating current filter 14 access power factor correction device 1, and alternating current filter 14 is for carrying out filtering process to AC power.
In technique scheme, it also comprises the output DLL (dynamic link library) equipment 15 be connected with single-chip microcomputer 11.Described A phasing commutator 2 and B phasing commutator 3 are DC/DC (DC-to-DC) converter, and it is for becoming variable direct voltage by fixing DC voltage conversion.
The course of work of the present utility model is: AC power carries out input power factor adjuster 1 after filtering process through alternating current filter 14, be transformed to the direct current common rail voltage of 300V, the direct current common rail voltage transformation of above-mentioned 300V is DC pulse moving voltage by A phasing commutator 2 and B phasing commutator 3, and this voltage obtains the given VD of single-chip microcomputer (program voltage) after output rectification filter device 4.This program voltage can be input to single-chip microcomputer 11 by communication interface 12, also can be input to single-chip microcomputer 11 by exporting DLL (dynamic link library) equipment 15.Program voltage value to be outputted in error amplifier 7 by digital to analog converter 10 and (is obtained from power output end by voltage amplifier 9 with voltage real output value by single-chip microcomputer 11, and carry out amplification process) compare, the output transform of error amplifier 7 is the control drive singal of A phasing commutator 2 and B phasing commutator 3 by pulse width modulator 8, and control A phasing commutator 2 and B phasing commutator 3 work.The output voltage of power output end and output current, after voltage amplifier and current amplifier process, are input to analog to digital converter 13, and the output that single-chip microcomputer 11 reads analog to digital converter 13 can obtain output voltage and the electric current of power supply.
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. a thin high-power programmable DC power supply, comprises power factor corrector (1), A phasing commutator (2), B phasing commutator (3), output rectification filter device (4), current sampling resistor (5), current amplifier (6), error amplifier (7), pulse width modulator (8), voltage amplifier (9), digital to analog converter (10), single-chip microcomputer (11), communication interface (12) and analog to digital converter (13), wherein, the input of AC power access power factor correction device (1), the input of output access A phasing commutator (2) of power factor corrector (1) and the input of B phasing commutator (3), the output of A phasing commutator (2) connects power supply output cathode end by output rectification filter device (4), the output of B phasing commutator (3) connects one end of current sampling resistor (5) by output rectification filter device (4), the other end of current sampling resistor (5) connects power supply output negative pole end,
Two signal input parts of described current amplifier (6) are connected to the two ends of current sampling resistor (5), the signal output part of current amplifier (6) connects the signal input part of error amplifier (7), two signal input parts of voltage amplifier (9) connect power supply output cathode end and power supply output negative pole end respectively, the signal output part of voltage amplifier (9) connects the signal input part of error amplifier (7), the signal output part of error amplifier (7) connects the signal input part of pulse width modulator (8), two signal output parts of pulse width modulator (8) connect the signal controlling end of A phasing commutator (2) and the signal controlling end of B phasing commutator (3) respectively,
The communication ends of described digital to analog converter (10), communication interface (12) and analog to digital converter (13) all accesses single-chip microcomputer (11), the signal output part of described digital to analog converter (10) connects the signal input part of error amplifier (7), the signal output part of described current amplifier (6) and the signal output part signal input part that connection mode number converter (13) is corresponding respectively of voltage amplifier (9).
2. thin high-power programmable DC power supply according to claim 1, it is characterized in that: it also comprises alternating current filter (14), described AC power is by the input of alternating current filter (14) access power factor correction device (1).
3. thin high-power programmable DC power supply according to claim 1, is characterized in that: it also comprises the output DLL (dynamic link library) equipment (15) be connected with single-chip microcomputer (11).
4. thin high-power programmable DC power supply according to claim 1, is characterized in that: described A phasing commutator (2) and B phasing commutator (3) are DC/DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345570.XU CN204089619U (en) | 2014-06-25 | 2014-06-25 | Thin high-power programmable DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345570.XU CN204089619U (en) | 2014-06-25 | 2014-06-25 | Thin high-power programmable DC power supply |
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| Publication Number | Publication Date |
|---|---|
| CN204089619U true CN204089619U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345570.XU Expired - Fee Related CN204089619U (en) | 2014-06-25 | 2014-06-25 | Thin high-power programmable DC power supply |
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| Country | Link |
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| CN (1) | CN204089619U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100292A (en) * | 2016-08-22 | 2016-11-09 | 上海怿星电子科技有限公司 | A kind of small power DC power supply able to programme and power configuration method |
| CN106787717A (en) * | 2016-12-12 | 2017-05-31 | 深圳市派捷电子科技有限公司 | A kind of four line programmable power supply circuits |
-
2014
- 2014-06-25 CN CN201420345570.XU patent/CN204089619U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100292A (en) * | 2016-08-22 | 2016-11-09 | 上海怿星电子科技有限公司 | A kind of small power DC power supply able to programme and power configuration method |
| CN106787717A (en) * | 2016-12-12 | 2017-05-31 | 深圳市派捷电子科技有限公司 | A kind of four line programmable power supply circuits |
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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 |
Granted publication date: 20150107 Termination date: 20200625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |