CN205029554U - Survey protection device of driver in ATE test system - Google Patents
Survey protection device of driver in ATE test system Download PDFInfo
- Publication number
- CN205029554U CN205029554U CN201520807833.9U CN201520807833U CN205029554U CN 205029554 U CN205029554 U CN 205029554U CN 201520807833 U CN201520807833 U CN 201520807833U CN 205029554 U CN205029554 U CN 205029554U
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- filter circuit
- absorbs
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- output
- electric capacity
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Abstract
The utility model discloses a survey protection device of driver in ATE test system, a serial communication port, first absorption filter circuit's input is connected to the output of ATE test system, common mode inductance's input is connected to first absorption filter circuit's output, the input that the second absorbs filter circuit is connected to common mode inductance's output, the second absorbs filter circuit's output and third absorption filter circuit's input all includes two terminals, the second absorbs filter outlet end's a terminal and connects differential mode choke, differential mode choke connects the terminal that the third absorbs the filter circuit input, the third absorbs another terminal of filter circuit input and is connected with another terminal that the second absorbs the filter circuit output, the third absorbs filter outlet end and connects by survey driver input. The utility model provides the high production efficiency and the direct rate of product, the protection driver does not receive the damage.
Description
Technical field
The utility model relates to a kind of driver protection device, is specifically related to the protective device of tested driver in a kind of ATE test macro, and the utility model belongs to driver ATE test macro field.
Background technology
During the full performance test of driver; can not proper testing in order to better protect the reason of non-driven device own to cause; thus can the better full performance of test driver; improve first-pass yield; reduce and produce fraction defective; enhance productivity, need ATE test macro output (namely the input of driver) to be connected the protective device that absorbs surge voltage.
Because the output each time in test process of ATE test macro is all to the laggard line output of programmable power supply instruction by computer, but programmable power supply is in handoff procedure and some distributed constant actings in conjunction, cause exporting surge voltage sometimes and exceeded the IEC standard of driver, thus when producing in enormous quantities tested driver have that a certain proportion of non-reason own causes bad.Thus there will be following four contradictions: the first, production division says that the production efficiency of product reduces, and directly can affect delivery date; The second, quality department says that the first-pass yield of product does not reach goal-selling, and product exists abnormal conditions, stop line; 3rd, research and development department say driver take research and development department test all no problem, all technical also meets the requirements completely, should be ATE problem; 4th, equipment control portion says that ATE can normally work, and the test parameter of driven device, without any problem, should be Product Design Problems.
Based on above contradictory problems, the surge voltage thoroughly solving the output of ATE test macro is needed to be determined to win.Prior art cannot provide relevant and be applicable to technology.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is the protective device providing tested driver in a kind of ATE test macro, to solve the technical problem that driver causes because of non-driven device reason damaging in ATE test.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
The protective device of tested driver in a kind of ATE test macro, it is characterized in that, comprise the first absorption filter circuit, second absorbs filter circuit, 3rd absorbs filter circuit, common mode inductance, differential mode inductance, the output of ATE test macro connects the input that first absorbs filter circuit, first output absorbing filter circuit connects the input of common mode inductance, the output of common mode inductance connects the input that second absorbs filter circuit, the input of the second output and the 3rd absorption filter circuit absorbing filter circuit includes two terminals, second terminal absorbing filter circuit output connects differential mode inductance, differential mode inductance connects the terminal that the 3rd absorbs filter circuit input, another terminal that 3rd another terminal and second absorbing filter circuit input absorbs filter circuit output is connected, 3rd absorbs filter circuit output connects tested driver input end.
The protective device of tested driver in aforesaid a kind of ATE test macro; it is characterized in that; described first absorbs filter circuit comprises the first electric capacity and the first overvoltage protector; first electric capacity and the first overvoltage protector parallel with one another; draw from the first electric capacity two ends the input that first absorbs filter circuit, draw from the two ends of the first overvoltage protector the output that first absorbs filter circuit.
The protective device of tested driver in aforesaid a kind of ATE test macro; it is characterized in that; described second absorbs filter circuit comprises the second electric capacity and the second overvoltage protector; second electric capacity and the second overvoltage protector parallel with one another; draw from the second electric capacity two ends the input that second absorbs filter circuit, draw from the two ends of the second overvoltage protector the output that second absorbs filter circuit.
The protective device of tested driver in aforesaid a kind of ATE test macro; it is characterized in that; described 3rd absorbs filter circuit comprises the 3rd electric capacity and the 3rd overvoltage protector; 3rd electric capacity and the 3rd overvoltage protector parallel with one another; draw from the 3rd electric capacity two ends the input that the 3rd absorbs filter circuit, draw from the two ends of the 3rd overvoltage protector the output that the 3rd absorbs filter circuit.
In aforesaid a kind of ATE test macro, the protective device of tested driver, is characterized in that, described first electric capacity, the second electric capacity, the 3rd electric capacity are safety electric capacity.
In aforesaid a kind of ATE test macro, the protective device of tested driver, is characterized in that, described first overvoltage protector, the second overvoltage protector, the 3rd overvoltage protector are piezo-resistance.
Usefulness of the present utility model is: in a kind of ATE test macro of the present utility model, the protective device of tested driver improves production efficiency and the first-pass yield of product; ATE test macro output surge voltage meets the IEC standard-required of driver, thus protection driver is not damaged.
Accompanying drawing explanation
Fig. 1 is the structural representation of the protective device of tested driver in a kind of ATE of the utility model test macro;
Fig. 2 is the application connection diagram of the protective device of tested driver in a kind of ATE of the utility model test macro.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the utility model.
The utility model accesses one at ATE test macro output (namely the input of driver) and absorbs the device of surge, thus protects driver and be not damaged.Tested driver protection device schematic diagram (as shown in Figure 1) in this ATE test macro, the schematic diagram of its access ATE, the i.e. typical apply (as shown in Figure 2) of the utility model scheme.
With reference to shown in Fig. 1, the protective device of tested driver in a kind of ATE test macro, comprise the first absorption filter circuit, second absorbs filter circuit, 3rd absorbs filter circuit, common mode inductance, differential mode inductance, the output of ATE test macro connects the input that first absorbs filter circuit, first output absorbing filter circuit connects the input of common mode inductance, the output of common mode inductance connects the input that second absorbs filter circuit, the input of the second output and the 3rd absorption filter circuit absorbing filter circuit includes two terminals, second terminal absorbing filter circuit output connects differential mode inductance, differential mode inductance connects the terminal that the 3rd absorbs filter circuit input, another terminal that 3rd another terminal and second absorbing filter circuit input absorbs filter circuit output is connected, 3rd absorbs filter circuit output connects tested driver input end.The utility model does not limit the first absorption filter circuit, second and absorbs the concrete structure that filter circuit, the 3rd absorbs filter circuit, first absorbs filter circuit, second absorbs filter circuit, the 3rd absorption filter circuit for realizing absorption filtering, as long as the circuit that can realize this function all can be used for the utility model.As preferably; in FIG; first absorbs filter circuit comprises the first electric capacity and the first overvoltage protector; first electric capacity and the first overvoltage protector parallel with one another; draw from the first electric capacity two ends the input that first absorbs filter circuit, draw from the two ends of the first overvoltage protector the output that first absorbs filter circuit.Second absorbs filter circuit comprises the second electric capacity and the second overvoltage protector; second electric capacity and the second overvoltage protector parallel with one another; draw from the second electric capacity two ends the input that second absorbs filter circuit, draw from the two ends of the second overvoltage protector the output that second absorbs filter circuit.3rd absorbs filter circuit comprises the 3rd electric capacity and the 3rd overvoltage protector; 3rd electric capacity and the 3rd overvoltage protector parallel with one another; draw from the 3rd electric capacity two ends the input that the 3rd absorbs filter circuit, draw from the two ends of the 3rd overvoltage protector the output that the 3rd absorbs filter circuit.ATE test macro output causes exporting in the effect of switching over and distributed constant the surge voltage exceeding driver IEC standard due to power supply, have passed this protective device (by the first electric capacity C11, first overvoltage protector VD11, common mode inductance L11 and the second electric capacity C12, second overvoltage protector VD12, differential mode inductance L12 and the 3rd electric capacity C13, 3rd overvoltage protector VD13 forms multistage absorption filtering) to the input of driver, the surge voltage of ATE test macro output is reduced to and meets within driver IEC critical field, thus protection driver is not damaged.The utility model preferably the first electric capacity, the second electric capacity, the 3rd electric capacity C11, C12, C13 is made up of X2 safety electric capacity; Preferred VD11, VD12, VD13 are made up of the piezo-resistance meeting civil power; L11 is made up of common mode inductance, and the difference of common mode inductance wire diameter determines the load capacity of ATE test macro; L12 is made up of differential mode inductance, and the difference of differential mode inductance wire diameter determines the load capacity of ATE test macro.
Fig. 2 be classified as the typical apply of the tested driver protection device of ATE test macro.This protective device is accessed at ATE test macro output (namely the input of driver); surge voltage that ATE test macro programmable power supply produces at handoff procedure and self distributed constant can be absorbed and protect tested driver not to be damaged; verified by actual production; improve production efficiency and the first-pass yield of product; ATE test macro output surge voltage also drops to the IEC standard-required meeting driver; reach the full performance test index of driver; meet our production test requirement, improve production efficiency and the first-pass yield of product.
Instantiation described in the present embodiment is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described instantiation, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.The present embodiment more employs the words such as distributed constant, surge voltage, production efficiency, first-pass yield, but does not get rid of the possibility using other word.Use these words to be only used to describe and explain essence of the present utility model more easily, the restriction that they are construed to any one additional is all contrary with the utility model spirit.
More than show and describe general principle of the present utility model, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the utility model in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection range of the present utility model.
Claims (6)
1. the protective device of tested driver in an ATE test macro, it is characterized in that, comprise the first absorption filter circuit, second absorbs filter circuit, 3rd absorbs filter circuit, common mode inductance, differential mode inductance, the output of ATE test macro connects the input that first absorbs filter circuit, first output absorbing filter circuit connects the input of common mode inductance, the output of common mode inductance connects the input that second absorbs filter circuit, the input of the second output and the 3rd absorption filter circuit absorbing filter circuit includes two terminals, second terminal absorbing filter circuit output connects differential mode inductance, differential mode inductance connects the terminal that the 3rd absorbs filter circuit input, another terminal that 3rd another terminal and second absorbing filter circuit input absorbs filter circuit output is connected, 3rd absorbs filter circuit output connects tested driver input end.
2. the protective device of tested driver in a kind of ATE test macro according to claim 1; it is characterized in that; described first absorbs filter circuit comprises the first electric capacity and the first overvoltage protector; first electric capacity and the first overvoltage protector parallel with one another; draw from the first electric capacity two ends the input that first absorbs filter circuit, draw from the two ends of the first overvoltage protector the output that first absorbs filter circuit.
3. the protective device of tested driver in a kind of ATE test macro according to claim 2; it is characterized in that; described second absorbs filter circuit comprises the second electric capacity and the second overvoltage protector; second electric capacity and the second overvoltage protector parallel with one another; draw from the second electric capacity two ends the input that second absorbs filter circuit, draw from the two ends of the second overvoltage protector the output that second absorbs filter circuit.
4. the protective device of tested driver in a kind of ATE test macro according to claim 3; it is characterized in that; described 3rd absorbs filter circuit comprises the 3rd electric capacity and the 3rd overvoltage protector; 3rd electric capacity and the 3rd overvoltage protector parallel with one another; draw from the 3rd electric capacity two ends the input that the 3rd absorbs filter circuit, draw from the two ends of the 3rd overvoltage protector the output that the 3rd absorbs filter circuit.
5. the protective device of tested driver in a kind of ATE test macro according to claim 4, it is characterized in that, described first electric capacity, the second electric capacity, the 3rd electric capacity are safety electric capacity.
6. the protective device of tested driver in a kind of ATE test macro according to claim 5, it is characterized in that, described first overvoltage protector, the second overvoltage protector, the 3rd overvoltage protector are piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807833.9U CN205029554U (en) | 2015-10-19 | 2015-10-19 | Survey protection device of driver in ATE test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807833.9U CN205029554U (en) | 2015-10-19 | 2015-10-19 | Survey protection device of driver in ATE test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205029554U true CN205029554U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520807833.9U Expired - Fee Related CN205029554U (en) | 2015-10-19 | 2015-10-19 | Survey protection device of driver in ATE test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205029554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075637A (en) * | 2016-11-18 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | EMC filter circuit, electromagnetic heating Household appliance control circuit and household electrical appliance |
-
2015
- 2015-10-19 CN CN201520807833.9U patent/CN205029554U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075637A (en) * | 2016-11-18 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | EMC filter circuit, electromagnetic heating Household appliance control circuit and household electrical appliance |
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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: 20160210 Termination date: 20211019 |