CN204303799U - The jockey of three pipe leg through hole package power devices in avalanche capability experiment - Google Patents
The jockey of three pipe leg through hole package power devices in avalanche capability experiment Download PDFInfo
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- CN204303799U CN204303799U CN201420801352.2U CN201420801352U CN204303799U CN 204303799 U CN204303799 U CN 204303799U CN 201420801352 U CN201420801352 U CN 201420801352U CN 204303799 U CN204303799 U CN 204303799U
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Abstract
The utility model relates to power semiconductor technologies field, discloses the jockey of a kind of three pipe leg through hole package power devices in avalanche capability experiment, comprising: device body, control switch, anti-jamming circuit and three pipe leg through hole package power device sockets; Anti-jamming circuit is arranged in device body; Three pipe leg through hole package power device sockets are arranged on device body, and three pipe leg through hole package power device sockets comprise the pipe leg electrode jack corresponding with three pipe leg exit positions of three pipe leg through hole package power devices; The terminals of anti-jamming circuit and the Electrode connection of pipe leg electrode jack, three pipe leg through hole package power devices to be measured insert from pipe leg electrode jack; Anti-jamming circuit is drawn from device body and is connected with avalanche capability checkout equipment; Control switch is arranged on signal path.The utility model has simple to operate, that testing efficiency is high and error is little feature.
Description
Technical field
The utility model relates to power semiconductor technologies field, is mainly applicable to the jockey of three pipe leg through hole package power devices in avalanche capability experiment.
Background technology
Power semiconductor is widely used in field of switches with advantages such as its high frequency, low driving powers, easily parallel connection.When power semiconductor is used in switch yard merging work, drive load inductance work.When power semiconductor turns off, the energy stored in load inductance can be discharged on power semiconductor, impacts power semiconductor, generally can cause power semiconductor because of avalanche breakdown by the generation of phenomenon of burning.In order to research and analyse the resistance to avalanche reliability ability of power device under load inductance energy, internationally recognized employing is without clamped inductance switch (Unclamped Inductive Switching, UIS) instrument this reliability performance to power device carries out testing evaluation, usually be also referred to as avalanche capability experiment, it is avalanche energy to the energy that should bear.In the avalanche capability experiment of power semiconductor, load inductance energy is discharged in device under test by without clamped inductance switch (UIS) instrument.The avalanche voltage that device under test occurs instantaneously, current waveform return test and collect and record.
And in reality test, the specification of power device to be measured and encapsulated type are different often.And the device of dissimilar size needs to be fixed by special test fixture, and then be effectively electrically connected according to test request and signal generation main system.Electrode definition and the specification of the power device of different encapsulation specification are all different, have oneself special requirement.The power device of three pipe leg through hole packing forms is a kind of common power devices, common are the packing forms such as TO-254, TO-257, TO-258, its representative configuration is that through hole is left on top, adopts three pipe legs to draw as electrode, and the schematic diagram of its avalanche capability experiment as shown in Figure 1.When carrying out avalanche capability test to such power device, three of a device pipe leg electrode leads to client effectively need be connected with signal system.Common practices is the pipe leg exit crocodile clip of electric lead one end being clipped in device, is connected by the connection jaws of the electric lead other end with signal main frame, to meet the electrical attachment requirements of measurement circuit.
But, the avalanche capability characteristic of power semiconductor to be measured is analyzed by said method, during each parameter testing, all need the manual line of operating personnel, so not only troublesome poeration, testing efficiency is low, easily make mistakes, and the contact portion of the pipe leg exit of the crocodile clip of electric lead and device, the electrode metal part of shell screw interface is all exposed to outer, when testing, the electromagnetic signal of experimental situation periphery easily produces interference to the pulse signal in test process, affect the collection of impulse response data, finally cause test result inaccurate, often show as and occur scalloping on waveform, the situation such as to vibrate obvious.
Utility model content
Technical problem to be solved in the utility model is to provide the jockey of a kind of three pipe leg through hole package power devices in avalanche capability experiment, and it has simple to operate, that testing efficiency is high and error is little feature.
For solving the problems of the technologies described above, the utility model provides the jockey of a kind of three pipe leg through hole package power devices in avalanche capability experiment, comprising: device body, control switch, anti-jamming circuit and three pipe leg through hole package power device sockets; Described anti-jamming circuit is arranged in described device body; Described three pipe leg through hole package power device sockets are fixedly installed on described device body, and exposing to described device body, described three pipe leg through hole package power device sockets comprise the pipe leg electrode jack corresponding with three pipe leg exit positions of three pipe leg through hole package power devices; First terminals of described anti-jamming circuit and the Electrode connection of described pipe leg electrode jack, the pipe leg exit of three pipe leg through hole package power devices to be measured inserts the first terminals UNICOM that is rear and described anti-jamming circuit from described pipe leg electrode jack; Second terminals of described anti-jamming circuit are drawn from described device body and are connected with avalanche capability checkout equipment; Described control switch is arranged on the signal path that formed by described three pipe leg through hole package power devices, described anti-jamming circuit, described three pipe leg through hole package power device sockets and described avalanche capability checkout equipment to be measured; Described control switch is fixedly installed on described device body, and exposes to described device body.
Further, also comprise: the first BNC connector, the second BNC connector and the 3rd BNC connector; Described first BNC connector, described second BNC connector and described 3rd BNC connector are fixedly installed on described device body, and expose to described device body, and are connected with the second terminals of described anti-jamming circuit; Second terminals of described anti-jamming circuit are connected with described avalanche capability checkout equipment with described 3rd BNC connector by described first BNC connector, described second BNC connector.
Further, described anti-jamming circuit comprises: pcb board, the first wire, the second wire, privates, privates, the 5th wire and the 6th wire; Described three pipe leg through hole package power device sockets also comprise the Kelvin's connecting electrode contact terminal be connected with described pipe leg electrode jack; Described first wire, described second wire and described privates are arranged on described pcb board in parallel to each other, and described first wire, described second wire and described privates are arranged with the form of non-curve; Described first wire and described privates are upper and lower two-layer parallel wiring structure, and described second wire and described 5th wire are upper and lower two-layer parallel wiring structure, and described privates and described 6th wire are upper and lower two-layer parallel wiring structure; Described first wire is connected with described first BNC connector with one end of described privates; Described second wire is connected with described second BNC connector with one end of described 5th wire; Described privates is connected with described 3rd BNC connector with one end of described 6th wire; Described first wire, described second wire, described privates, described privates, described 5th wire are connected with Kelvin's connecting electrode contact terminal of described three pipe leg through hole package power device sockets separately respectively with the other end of described 6th wire.
The beneficial effects of the utility model are:
The jockey of the three pipe leg through hole package power devices that the utility model provides in avalanche capability experiment, is arranged in device body by control switch and anti-jamming circuit, is arranged on device body by three pipe leg through hole package power device sockets.First terminals of anti-jamming circuit are connected with three pipe leg through hole package power devices to be measured by three pipe leg through hole package power device sockets, and the second terminals of anti-jamming circuit are drawn from device body and are connected with avalanche capability checkout equipment.When needs carry out avalanche capability experiment to device, only the pipe leg electrode jack of the pipe leg exit of three pipe leg through hole package power devices to be measured from three pipe leg through hole package power device private jacks need be inserted, again avalanche capability checkout equipment is connected with the terminals of anti-jamming circuit, simple to operate and testing efficiency is high.By the utility model, avalanche capability experiment is carried out to three pipe leg through hole package power devices, be not all need to connect up at every turn, thus reduce the generation of the measure error caused because of human error, improve measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the avalanche capability experiment of three pipe leg through hole package power devices;
The structural representation of the jockey of three pipe leg through hole package power devices in avalanche capability experiment that Fig. 2 provides for the utility model embodiment;
The outside connection diagram of the jockey of three pipe leg through hole package power devices in avalanche capability experiment that Fig. 3 provides for the utility model embodiment.
Wherein, 1-device body, 2-first BNC connector, 3-second BNC connector, 4-the 3rd BNC connector, 5-tri-pipe leg through hole package power device socket, 6-control switch, 7-PCB plate, 8-avalanche capability checkout equipment.
Embodiment
For setting forth the utility model further for the technological means reaching predetermined utility model object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, be described in detail to according to the embodiment of the three pipe leg through hole package power devices that the utility model proposes jockey in avalanche capability experiment and operation principle.
See Fig. 2 and Fig. 3, the jockey of the three pipe leg through hole package power devices that the utility model embodiment provides in avalanche capability experiment, comprising: device body 1, control switch 6, anti-jamming circuit and three pipe leg through hole package power device sockets 5; Anti-jamming circuit is arranged in device body 1; Three pipe leg through hole package power device sockets 5 are fixedly installed on device body 1, and exposing to device body 1, three pipe leg through hole package power device sockets 5 comprise the pipe leg electrode jack corresponding with three pipe leg exit positions of three pipe leg through hole package power devices; The Electrode connection of the first terminals of anti-jamming circuit and the pipe leg electrode jack of three pipe leg through hole package power device sockets 5, the pipe leg exit of three pipe leg through hole package power devices to be measured inserts the first terminals UNICOM that is rear and anti-jamming circuit from pipe leg electrode jack; Second terminals of anti-jamming circuit are drawn from device body 1 and are connected with avalanche capability checkout equipment 8; Control switch 6 is arranged on the signal path that formed by three pipe leg through hole package power devices to be measured, anti-jamming circuit, three pipe leg through hole package power device sockets 5 and avalanche capability checkout equipment 8; Control switch 6 is fixedly installed on device body 1, and exposes to device body 1.Wherein, control switch 6 can adopt existing connected mode, does not make concrete restriction here.
Be described further the structure of the utility model embodiment, the utility model embodiment also comprises: the first BNC connector 2, second BNC connector 3 and the 3rd BNC connector 4; First BNC connector 2, second BNC connector 3 and the 3rd BNC connector 4 are fixedly installed on device body 1, and expose to device body 1, and are connected with the second terminals of anti-jamming circuit; Second terminals of anti-jamming circuit are connected with avalanche capability checkout equipment 8 with the 3rd BNC connector 4 by the first BNC connector 2, second BNC connector 3.In the present embodiment, avalanche capability checkout equipment 8 is UIS instrument.
In order to realize the Kelvin contact of signal four-wire system, in the present embodiment, anti-jamming circuit comprises: pcb board 7, first wire (not illustrating in the drawings), the second wire (not illustrating in the drawings), privates (not illustrating in the drawings), privates (not illustrating in the drawings), the 5th wire (not illustrating in the drawings) and the 6th wire (not illustrating in the drawings); Three pipe leg through hole package power device sockets 5 also comprise the Kelvin's connecting electrode contact terminal be connected with pipe leg electrode jack; First wire, the second wire and privates are arranged on pcb board 7 in parallel to each other, and the first wire, the second wire and privates are arranged with the form of non-curve; First wire and privates are upper and lower two-layer parallel wiring structure, and the second wire and the 5th wire are upper and lower two-layer parallel wiring structure, and privates and the 6th wire are upper and lower two-layer parallel wiring structure; First wire is connected with the first BNC connector 2 with one end of privates; Second wire is connected with the second BNC connector 3 with one end of the 5th wire; Privates is connected with the 3rd BNC connector 4 with one end of the 6th wire; First wire, the second wire, privates, privates, the 5th wire are connected with Kelvin's connecting electrode contact terminal of three pipe leg through hole package power device sockets 5 separately respectively with the other end of the 6th wire.Wherein, the first wire, the second wire and privates with the form of non-curve arrange be guide line can only with the arranged in form of straight line on pcb board 7, also can with the arranged in form of straight line and right-angle bending on pcb board 7.
By the utility model embodiment, avalanche capability experiment is carried out to the power device of TO-254 packing forms, first according to the requirement of UIS test, device body 1 is connected with UIS instrument with the 3rd BNC connector 4 by the first BNC connector 2, second BNC connector 3; Again the pipe leg electrode jack of the pipe leg exit of the power device of TO-254 packing forms to be measured from the power device socket of TO-254 packing forms is inserted.During use, arrange control switch 6 conducting, produce signal by UIS instrument and apply the power device of TO-254 packing forms to be measured biased, snowslide phenomenon occurs, and current-voltage waveform returns the process of UIS instrument by tester interface.
The jockey of the three pipe leg through hole package power devices that the utility model embodiment provides in avalanche capability experiment, control switch 6 and anti-jamming circuit are arranged in device body 1, three pipe leg through hole package power device sockets 5 are arranged on device body 1.First terminals of anti-jamming circuit are connected with three pipe leg through hole package power devices to be measured by three pipe leg through hole package power device sockets 5, and the second terminals of anti-jamming circuit are drawn from device body 1 and are connected with avalanche capability checkout equipment.When needs carry out avalanche capability experiment to device, only the pipe leg electrode jack of the pipe leg exit of three pipe leg through hole package power devices to be measured from three pipe leg through hole package power device sockets 5 need be inserted, again UIS instrument is connected with the terminals of anti-jamming circuit, not only simple to operate, testing efficiency is high, and avoid outside metal electrode is exposed to, the metal electrode place avoided outside being exposed to is short-circuited, and ensure that the personal safety of staff.Meanwhile, the utility model embodiment also reduces the electromagnetic signal of experimental situation periphery easily to the interference of the pulse signal in test process, improves measuring accuracy.By the utility model embodiment, avalanche capability experiment is carried out to three pipe leg through hole package power devices, be not all need to connect up at every turn, thus reduce the generation of the measure error caused because of human error, improve measuring accuracy.The utility model embodiment is by the use to pcb board 7, shorten the length of used connection wire, and the length working as used connection wire long time, the generation of the situation easily causing wire many places to bend or to be mutually wound around, and when Signal transmissions, annular or bending circuit can cause unnecessary stray inductance, these stray inductances can have a strong impact on actual effect during inductive load switch testing, often increase excessive waveform, affect the measuring accuracy of result, thus the utility model embodiment is by further increasing the measuring accuracy of the utility model embodiment to the use of pcb board 7.In addition, the first wire in the utility model embodiment, the second wire and privates are arranged on pcb board 7 with the form of non-curve, avoid occurring " S " type cabling, further avoid and cause stray inductance because of conductive line bends, further increase the measuring accuracy of the utility model embodiment.
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. the jockey of three pipe leg through hole package power devices in avalanche capability experiment, is characterized in that, comprising: device body, control switch, anti-jamming circuit and three pipe leg through hole package power device sockets; Described anti-jamming circuit is arranged in described device body; Described three pipe leg through hole package power device sockets are fixedly installed on described device body, and exposing to described device body, described three pipe leg through hole package power device sockets comprise the pipe leg electrode jack corresponding with three pipe leg exit positions of three pipe leg through hole package power devices; First terminals of described anti-jamming circuit and the Electrode connection of described pipe leg electrode jack, the pipe leg exit of three pipe leg through hole package power devices to be measured inserts the first terminals UNICOM that is rear and described anti-jamming circuit from described pipe leg electrode jack; Second terminals of described anti-jamming circuit are drawn from described device body and are connected with avalanche capability checkout equipment; Described control switch is arranged on the signal path that formed by described three pipe leg through hole package power devices, described anti-jamming circuit, described three pipe leg through hole package power device sockets and described avalanche capability checkout equipment to be measured; Described control switch is fixedly installed on described device body, and exposes to described device body.
2. the jockey of three pipe leg through hole package power devices as claimed in claim 1 in avalanche capability experiment, is characterized in that, also comprise: the first BNC connector, the second BNC connector and the 3rd BNC connector; Described first BNC connector, described second BNC connector and described 3rd BNC connector are fixedly installed on described device body, and expose to described device body, and are connected with the second terminals of described anti-jamming circuit; Second terminals of described anti-jamming circuit are connected with described avalanche capability checkout equipment with described 3rd BNC connector by described first BNC connector, described second BNC connector.
3. the jockey of three pipe leg through hole package power devices as claimed in claim 2 in avalanche capability experiment, it is characterized in that, described anti-jamming circuit comprises: pcb board, the first wire, the second wire, privates, privates, the 5th wire and the 6th wire; Described three pipe leg through hole package power device sockets also comprise the Kelvin's connecting electrode contact terminal be connected with described pipe leg electrode jack; Described first wire, described second wire and described privates are arranged on described pcb board in parallel to each other, and described first wire, described second wire and described privates are arranged with the form of non-curve; Described first wire and described privates are upper and lower two-layer parallel wiring structure, and described second wire and described 5th wire are upper and lower two-layer parallel wiring structure, and described privates and described 6th wire are upper and lower two-layer parallel wiring structure; Described first wire is connected with described first BNC connector with one end of described privates; Described second wire is connected with described second BNC connector with one end of described 5th wire; Described privates is connected with described 3rd BNC connector with one end of described 6th wire; Described first wire, described second wire, described privates, described privates, described 5th wire are connected with Kelvin's connecting electrode contact terminal of described three pipe leg through hole package power device sockets separately respectively with the other end of described 6th wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420801352.2U CN204303799U (en) | 2014-12-16 | 2014-12-16 | The jockey of three pipe leg through hole package power devices in avalanche capability experiment |
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| CN201420801352.2U CN204303799U (en) | 2014-12-16 | 2014-12-16 | The jockey of three pipe leg through hole package power devices in avalanche capability experiment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988642A (en) * | 2019-12-11 | 2020-04-10 | 上海华碧检测技术有限公司 | Method and device for testing avalanche tolerance of IGBT power device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988642A (en) * | 2019-12-11 | 2020-04-10 | 上海华碧检测技术有限公司 | Method and device for testing avalanche tolerance of IGBT power device |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210425 Address after: 243000 101-401, building 38, digital Silicon Valley Industrial Park, No. 999, Yinhuang East Road, economic and Technological Development Zone, Ma'anshan City, Anhui Province Patentee after: ANHUI DONGKE SEMICONDUCTOR Co.,Ltd. Address before: 100029 Beijing city Chaoyang District Beitucheng West Road No. 3 Patentee before: Institute of Microelectronics, Chinese Academy of Sciences |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 101-401, building 38, digital Silicon Valley Industrial Park, No. 999, Yinhuang East Road, Maanshan economic and Technological Development Zone, 243000, Anhui Province Patentee after: Dongke semiconductor (Anhui) Co.,Ltd. Address before: Room 101-401, building 38, digital Silicon Valley Industrial Park, No. 999, Yinhuang East Road, Maanshan economic and Technological Development Zone, 243000, Anhui Province Patentee before: ANHUI DONGKE SEMICONDUCTOR Co.,Ltd. |