CN204314351U - A kind of test source device - Google Patents
A kind of test source device Download PDFInfo
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- CN204314351U CN204314351U CN201420745172.7U CN201420745172U CN204314351U CN 204314351 U CN204314351 U CN 204314351U CN 201420745172 U CN201420745172 U CN 201420745172U CN 204314351 U CN204314351 U CN 204314351U
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Abstract
The utility model belongs to simulation electronic power technique fields, relate to the test source device of PCB testing apparatus, comprise: 5V power supply (1), 12V first power transfer module (21), 5V reference power source module (22), 12V second source modular converter (23), high-voltage power supply modular converter (3), D/A converter module (4), voltage operational circuit (5), constant voltage circuit (6), constant-current circuit (71), current feedback circuit (72), data input and control end (8), high-voltage power supply exports and output protection circuit (91), constant pressure source export and output protection circuit (92) and constant current source output and output protection circuit (93).The utility model have Heng Yuan, constant voltage, high-voltage power supply output respectively adjustable, only have single control end, the test source device of economy, reduce the production cost of electric measuring system, facilitate electric measuring system to use.
Description
Technical field
The utility model belongs to simulation electronic power technique fields, particularly relates to the test source device of PCB testing apparatus.
Background technology
Flying probe tester be for arrangements of elements high density, the number of plies is many, wiring density is large, measuring point carries out a kind of instrument of testing apart from little pcb board (printed circuit board (PCB)), the insulation of main measurement circuit plate and conduction value.The electric measuring system of flying probe tester needs polytype test test source, as constant current source, constant pressure source, high-voltage power supply etc., and be all adjustable, electric measuring system is according to the test request of user, any time all only uses a kind of test source, electric measuring system adopts three kinds of independently program control, adjustable finished product test sources, and its price costly.On the one hand, need program control, and all need in whole output area adjustable, so, the problem that use cost is high will be caused; On the other hand, its communication and control port more, be not easy to integrate, cause and use the problems such as inconvenient; Electric measuring system is not high to the power requirement of test source, and if not special finished product power supply, it is excessive and waste the problem of resource that it also can exist power.
Utility model content
The object of the utility model embodiment is to provide a kind of test source device, convenient and practical and reduce costs.
The utility model embodiment is achieved in that
A kind of test source device, comprising: the input of 5V power supply, 12V first power transfer module, 5V reference power source module, high-voltage power supply modular converter, D/A converter module, data and control end and high-voltage power supply export and output protection circuit, 5V power supply connects 12V first power transfer module and 5V reference power source module respectively, 12V first power transfer module connects high-voltage power supply modular converter, 5V reference power source model calling D/A converter module, the control signal interface of data input and control end connects the enable control end of high-voltage power supply modular converter, the data signal interfaces of data input and control end connects the input end of D/A converter module, the output terminal of D/A converter module connects the output voltage control end of high-voltage power supply modular converter, the output terminal of high-voltage power supply modular converter connects high-voltage power supply and exports and output protection circuit.
Described a kind of test source device, also comprise: 12V second source modular converter, voltage operational circuit, constant voltage circuit and constant pressure source export and output protection circuit, described 5V power supply connects 12V second source modular converter, 12V second source modular converter connects voltage operational circuit and constant voltage circuit respectively, the output terminal of D/A converter module connects the input end of voltage operational circuit, the control signal interface of data input and control end connects the enable control end of constant voltage circuit, the output of voltage operational circuit connects the voltage input end of constant voltage circuit, the output terminal of constant voltage circuit connects constant pressure source and exports and output protection circuit.
Described a kind of test source device; also comprise: constant-current circuit, current feedback circuit, constant current source export and output protection circuit; 12V second source modular converter connects constant-current circuit and current feedback circuit respectively; the control signal interface of data input and control end connects the enable control end of constant-current circuit; the output of voltage operational circuit connects the voltage input end of constant-current circuit; current feedback circuit is serially connected between constant-current circuit output terminal and feedback end, and constant-current circuit output terminal connects constant current source and exports and output protection circuit.
Described a kind of test source device, also comprise: 12V second source modular converter, voltage operational circuit, constant-current circuit, current feedback circuit, constant current source exports and output protection circuit, described 5V power supply connects 12V second source modular converter, 12V second source modular converter connects constant-current circuit and current feedback circuit respectively, the control signal interface of data input and control end connects the enable control end of constant-current circuit, the output terminal of D/A converter module connects the input end of voltage operational circuit, the output of voltage operational circuit connects the voltage input end of constant-current circuit, current feedback circuit is serially connected between constant-current circuit output terminal and feedback end, constant-current circuit output terminal connects constant current source and exports and output protection circuit.
Described voltage operational circuit to be gain be 2 in-phase proportion circuit.
The utility model embodiment by use the design such as DC-DC module, operational amplifier, D/A converter module (DAC), reference power source circuit chip one have Heng Yuan, constant voltage, high-voltage power supply output adjustable respectively, only has single control end, the test source device of economy, reduce the production cost of electric measuring system, facilitate electric measuring system to use.
Accompanying drawing explanation
Fig. 1 is the test source schematic diagram of device of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with specific embodiment, specific implementation of the present utility model is described in detail:
Electric measuring system requires that constant pressure source exports 0-10VDC adjustable (power about 5W), and constant current source exports 0-400mA adjustable (power about 4W), and high-voltage power supply exports 0-500VDC adjustable (power about 2W).
As shown in Figure 1, test source device comprises 5V power supply 1,12V first power transfer module 21,5V reference power source module 22,12V second source modular converter 23, high-voltage power supply modular converter 3, D/A converter module 4, voltage operational circuit 5, constant voltage circuit 6, constant-current circuit 71, current feedback circuit 72, data input and control end 8, high-voltage power supply exports and output protection circuit 91, constant pressure source exports and output protection circuit 92 and constant current source export and output protection circuit 93.
Wherein, 5V power supply 1 provides power supply to 12V first power transfer module 21,5V reference power source module 22 and 12V second source modular converter 23,12V first power transfer module 21 is as the power supply of high-voltage power supply modular converter 3,5V reference power source module 22 is as the power supply of D/A converter module 4, and 12V second source modular converter 23 is respectively as the power supply of voltage operational circuit 5, constant voltage circuit 6, constant-current circuit 71 and current feedback circuit 72.
Data input and control end 8 connect the enable control end of high-voltage power supply modular converter 3, send the enable control signal of work to high-voltage power supply modular converter 3; Data input and control end 8 connect the input end of D/A converter module 4; the serial digital control signal of test source is exported to D/A converter module 4; the output terminal of D/A converter module 4 connects the output voltage control end of high-voltage power supply modular converter 3; export analog voltage to determine the output voltage size of high-voltage power supply to high-voltage power supply modular converter 3, the output voltage of high-voltage power supply modular converter 3 is connected to high-voltage power supply and exports and output protection circuit 91.
Data input and control end 8 connect the enable control end of constant voltage circuit 6 and constant-current circuit 71 respectively, send the enable control signal of work respectively, the output terminal of D/A converter module 4 connects the input end of voltage operational circuit 5, voltage operational circuit 5 logarithmic mode modular converter 4 output voltage amplifies, the output of voltage operational circuit 5 connects the voltage input end of constant voltage circuit 6 and constant-current circuit 71 respectively, the output voltage of constant voltage circuit 6 output terminal is connected to constant pressure source and exports and output protection circuit 92, current feedback circuit 72 is serially connected between constant-current circuit 71 output terminal and feedback end, the output voltage of constant-current circuit 71 output terminal is connected to constant current source and exports and output protection circuit 93.
In such scheme, the kind of power supply comprises 5V power supply 1,12V first power transfer module 21,12V second source modular converter 23 and 5V reference power source module 22.Wherein 5V power supply 1 is directly supplied by external switch power supply.12V power supply is by the output of the DC-DC power source modular converter of outsourcing, and the power supply of modular converter is 5V power supply 1.12V power supply has two groups, and one group is 12V first power transfer module 21, and supply high-voltage power supply modular converter 3 is as its input power; Another group is 12V second source modular converter 23, is the power supply of the operational amplifier of constant voltage circuit 6 and constant-current circuit 71.5V reference power source module 22 is that the REF5050 using the power source special reference chip Texas Instrument (Texas Instruments) of outsourcing to produce comes from 5V power supply 1 conversion.When using this reference circuit, as long as 5V power supply 1 adjustment is exceeded 0.2V.5V reference power source module 22 is power supplies of D/A converter module 4.
Data input and control end 8 are interfaces that the transmission of electric measuring system data and function control, electric measuring system sends data command and control command by this port to test source device, namely be realize the output of D/A converter module 4 and each test source select enable control, this port comprises the data signal interfaces (SYNC, SCLK, DIN) of DAC, the enable control signal of work of high-voltage power supply modular converter 3, constant voltage circuit 6, constant-current circuit 71, it exports the enable control port being connected to each test source respectively.
D/A converter module 4 (DAC) chief component is exactly analog-digital chip, it is responsible for data input and the voltage data of control end 8 to convert analog voltage to, and its analog voltage exported is the controlled quentity controlled variable of output of high-voltage power supply, constant pressure source, constant current source.In this programme, selected the DAC6311 of Texas Instrument to realize analog conversion function, DAC6311 is the serial data of reception 10, and it uses 5V reference power source module 22 as power supply.When peripheral circuit is perfect, need, to its chip selection signal input end SYNC input low level (other states are then anti-), then data clock signal input terminal SCLK and serial input terminal DIN to be carried out to the voltage of operation and exportable 0-5VDC during transmission data.High-voltage power supply modular converter 3 and voltage operational circuit 5 are received in the output of D/A converter module 4 simultaneously.
High-voltage power supply modular converter 3 is a special DC-DC modular converters of outsourcing.Its output area is 0-500VDC, and output power is 3W, meets the test circuit demand of electric measuring system.The input control end of this module has two: one to be the enable control end of work, and at this, it is controlled by an I/O signal of data input and control end 8; Another is output voltage control end, and the input of this control end is analog quantity, and the voltage exported by D/A converter module 4 directly controls, the output of the corresponding 0-500VDC of input of 0-4VDC.Electric measuring system is inputted by data and the enable control IO of high-voltage power supply work of control end 8 just can make high-voltage power supply modular converter 3 enter duty; to be inputted by data and the data signal interfaces of D/A converter module 4 of control end 8 can control the output voltage of D/A converter module 4; this namely controls the output voltage of high-voltage power supply modular converter 3, and it exports and is connected to high-voltage power supply output and output protection circuit 91.
Voltage operational circuit 5 is circuit that logarithmic mode modular converter 4 output voltage carries out amplifying.The maximum voltage that D/A converter module 4 exports is 5V, and constant voltage circuit 6 gain is below 1, therefore at least needs to carry out to it voltage that amplification 2 times could allow constant voltage circuit 6 export 0-10V.Voltage operational circuit 5 adopt operational amplifier A D820 to build in-phase proportion circuit realiration that gain is 2, use 12V second source modular converter 23 as power supply, the voltage that D/A converter module 4 exports directly is delivered to voltage operational circuit 5 and amplifies 2 times, and the output of voltage operational circuit 5 connects the voltage input end of constant voltage circuit 6, constant-current circuit 71 simultaneously.
Constant voltage circuit 6 carries out constant voltage to the voltage that voltage operational circuit 5 exports, and ensures the stable circuit of output voltage.Constant voltage circuit 6 employs power amplifier and relevant constant voltage circuit realizes, and circuit uses 12V second source modular converter 23 as power supply equally.The OPA547 that power amplifier in constant voltage circuit 6 employs Texas Instrument realizes, and its output current can reach 0.75A, and output voltage can reach 60V, uses itself and relevant constant voltage circuit composite design can meet the demand of electric measuring system.In order to keep good dynamic property, constant voltage circuit 6 designing gain is that 1, OPA547 has an enable control end, and it inputs with data and the enable control signal of constant pressure source work of control end 8 is connected; When constant pressure source selected by needs; this signal is only needed to set high level; as long as the output that electric measuring system controls D/A converter module 4 is constant, the output that finally can realize controlling constant pressure source is constant, and the output of constant voltage circuit 6 is connected to constant pressure source and exports and output protection circuit 92.
Constant-current circuit 71 and current feedback circuit 72 are the circuit realizing Voltage-current conversion, and this two parts circuit is an entirety.What voltage operational circuit 5 exported is analog voltage, and this voltage will be changed into corresponding electric current by constant-current circuit 71, and transfers out.By adopting operational amplifier and resistance, capacitor design constant-current circuit 71 and current feedback circuit 72, make the ratio of its input voltage and output current requiring to be a definite value in the range of current exported, output voltage and output current have linear relationship, as long as keep the output of D/A converter module 4 constant, constant-current circuit 71 i.e. exportable steady current.The output of electric measuring system also by controlling D/A converter module 4 controls the size of current of constant current source.In this programme, constant-current circuit 71 also adopts power operational amplifier OPA547 to realize, and its enable control end inputs with data and the enable control signal of constant current source work of control end 8 is connected, and duty also controls by this signal; Current feedback circuit 72 is the AD820 designs using operational amplifier Ya De promise Analog Devices to produce; Constant-current circuit 71 and the power supply both current feedback circuit 72 are all 12V second source modular converters 23, and the output of constant-current circuit 71 is connected to constant current source and exports and output protection circuit 93.
The output of three kinds of test sources and output protection circuit are output interface and output voltage, the current protecting circuit of each test source, protection circuit be adopt relevant overvoltage, over-current protection device realizes.
In embodiment of the present utility model, by use the design such as DC-DC module, operational amplifier, D/A converter module (DAC), reference power source circuit chip one have Heng Yuan, constant voltage, high-voltage power supply output adjustable respectively, only has single control end, the test source device of economy, reduce the production cost of electric measuring system, facilitate electric measuring system to use.
The foregoing is only preferred embodiment of the present utility model; be not limited to the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a test source device, is characterized in that, comprising: the input of 5V power supply, 12V first power transfer module, 5V reference power source module, high-voltage power supply modular converter, D/A converter module, data and control end and high-voltage power supply export and output protection circuit, 5V power supply connects 12V first power transfer module and 5V reference power source module respectively, 12V first power transfer module connects high-voltage power supply modular converter, 5V reference power source model calling D/A converter module, the control signal interface of data input and control end connects the enable control end of high-voltage power supply modular converter, the data signal interfaces of data input and control end connects the input end of D/A converter module, the output terminal of D/A converter module connects the output voltage control end of high-voltage power supply modular converter, the output terminal of high-voltage power supply modular converter connects high-voltage power supply and exports and output protection circuit.
2. a kind of test source device according to claim 1, it is characterized in that, also comprise: 12V second source modular converter, voltage operational circuit, constant voltage circuit and constant pressure source export and output protection circuit, described 5V power supply connects 12V second source modular converter, 12V second source modular converter connects voltage operational circuit and constant voltage circuit respectively, the output terminal of D/A converter module connects the input end of voltage operational circuit, the control signal interface of data input and control end connects the enable control end of constant voltage circuit, the output of voltage operational circuit connects the voltage input end of constant voltage circuit, the output terminal of constant voltage circuit connects constant pressure source and exports and output protection circuit.
3. a kind of test source device according to claim 2; it is characterized in that; also comprise: constant-current circuit, current feedback circuit, constant current source export and output protection circuit; 12V second source modular converter connects constant-current circuit and current feedback circuit respectively; the control signal interface of data input and control end connects the enable control end of constant-current circuit; the output of voltage operational circuit connects the voltage input end of constant-current circuit; current feedback circuit is serially connected between constant-current circuit output terminal and feedback end, and constant-current circuit output terminal connects constant current source and exports and output protection circuit.
4. a kind of test source device according to claim 1, it is characterized in that, also comprise: 12V second source modular converter, voltage operational circuit, constant-current circuit, current feedback circuit, constant current source exports and output protection circuit, described 5V power supply connects 12V second source modular converter, 12V second source modular converter connects constant-current circuit and current feedback circuit respectively, the control signal interface of data input and control end connects the enable control end of constant-current circuit, the output terminal of D/A converter module connects the input end of voltage operational circuit, the output of voltage operational circuit connects the voltage input end of constant-current circuit, current feedback circuit is serially connected between constant-current circuit output terminal and feedback end, constant-current circuit output terminal connects constant current source and exports and output protection circuit.
5., according to the arbitrary described a kind of test source device of claim 2 to 4, it is characterized in that: described voltage operational circuit to be gain be 2 in-phase proportion circuit.
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| CN201420745172.7U CN204314351U (en) | 2014-12-02 | 2014-12-02 | A kind of test source device |
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| CN201420745172.7U CN204314351U (en) | 2014-12-02 | 2014-12-02 | A kind of test source device |
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| CN204314351U true CN204314351U (en) | 2015-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485696A (en) * | 2020-10-29 | 2021-03-12 | 苏州浪潮智能科技有限公司 | Power supply testing device and method and server |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485696A (en) * | 2020-10-29 | 2021-03-12 | 苏州浪潮智能科技有限公司 | Power supply testing device and method and server |
| CN112485696B (en) * | 2020-10-29 | 2022-12-02 | 苏州浪潮智能科技有限公司 | Power supply testing device and method and server |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200707 Address after: 518000 workshop 5 / F, 1 / 2 / F, 14 / F, 17 / F, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 518000 No. 9988 Shennan Avenue, Shenzhen, Guangdong, Nanshan District Co-patentee before: SHENZHEN HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Han's CNC Technology Co.,Ltd. Address before: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |