CN204241638U - The pulse current amplitude calibrating installation of power IGBT module testing apparatus - Google Patents
The pulse current amplitude calibrating installation of power IGBT module testing apparatus Download PDFInfo
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- CN204241638U CN204241638U CN201420765121.0U CN201420765121U CN204241638U CN 204241638 U CN204241638 U CN 204241638U CN 201420765121 U CN201420765121 U CN 201420765121U CN 204241638 U CN204241638 U CN 204241638U
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Abstract
The utility model belongs to communication calibration field, relates to pulse current amplitude calibrating installation, particularly relates to the pulse current amplitude calibrating installation of power IGBT module testing apparatus.The pulse current amplitude calibrating installation of power IGBT module testing apparatus, comprise Pearson's coil, digitizer, BNC p-wire, short-circuit line, short-circuit line passes perpendicularly through Pearson's coil and is connected with power IGBT module testing apparatus, digitizer peripheral hardware measuring junction, Pearson's coil is connected with measuring junction by BNC p-wire.Disclosed in the utility model, the pulse current amplitude calibrating installation of power IGBT module testing apparatus has following beneficial effect: fast and accurately to the key parameter of power IGBT module testing apparatus---pulse current amplitude is measured.
Description
Technical field
The utility model belongs to communication calibration field, relates to pulse current amplitude calibrating installation, particularly relates to the pulse current amplitude calibrating installation of power IGBT module testing apparatus.
Background technology
The IGBT module set advantage of MOSFET element and bipolar transistor, has the excellent performance such as input impedance is large, driving power is little, control circuit is simple, switching loss is little, break-make speed is fast, frequency of operation is high, element volume is large, is used widely.Be developed so far and almost substituted some other as SCR, GTO, GTR, MOSFET, ambipolar Darlington transistor constant power device, Primary Component is become in the application such as servo controller, UPS, Switching Power Supply, power of chopping, AC Motor Control and inverter circuit, especially the guided missile launcher etc. on the Switching Power Supply of the domain-specific such as Aeronautics and Astronautics and military project electronics, AC Motor Control system, naval vessels, the Performance Characteristics of IGBT power model and quality good or not become the key factor concerning Model engineering quality.The power IGBT module overwhelming majority is external Devices, as Siemens, fairchild, Toshiba, IR, ABB, company of Fuji etc. provide, along with China is to the raising of input and the Development Level energetically of power IGBT power model manufacture, successfully develop power IGBT module in swallow east microelectronics, Microelectronics Institute of the Chinese Academy of Sciences, 877 factories, electronics 20 Suo Deng unit at present.
When carrying out parameter testing to power IGBT module, first the test condition (namely entering the working point of regulation) needing to make tested device meet parameter testing and specify, meet the test environment temperature of regulation, such surveyed data just have actual meaning simultaneously.In order to reduce the impact of additional temperature rise, only way shortens the test duration." pulse test " method of semi-conductor discrete device parameter is defined, to solve the problem affecting test data authenticity due to the temperature rise of measured device chip attach in the standards such as American army mark (MIL-STD-750E), national military standard (GJB 128A-1997), GB (GB/T 4587-94).For power IGBT module, because pulse power is very large, but 50 μ s pulse test conditions are widely adopted when its parameter testing, here the most typical with the power IGBT module testing apparatus TRDS series of LEMSYS company of external exemplary apparatus Switzerland, it adopts dipulse method of testing, and individual pulse width is about 50 μ s.
Power IGBT module testing apparatus mainly contains domestic, import two kinds, import equipment accounts for the overwhelming majority, typical case's model is the power IGBT module dynamic and static state parameters test series product of company of Sweden, can configuration module according to demand, its maximum current reaches 7000A (adopt pulse testing method, pulse width is about 50 μ s); Such testing apparatus domestic, but also have some gaps with in performance index in voltage, testing current scope compared with same kind of products at abroad.The main chorologic unit of power IGBT module testing apparatus has: the Chinese Academy of Sciences, Nan Che group, Bei Che group, and the demand of this kind equipment is also in continuous increase in recent years.
Because power IGBT module testing apparatus pulse current amplitude is very high, test philosophy is complicated, its composition mainly comprises D.C. regulated power supply, signal generator, digital oscilloscope, pulse high current source, the many parts such as test fixture are formed, its calibration can adopt subitem parametric method to carry out, namely by calibrating to internal module the calibration realizing overall performance respectively, wherein difficult point is pulse high current source part, low magnitude portion can adopt shunt method to carry out, when pulse current is higher than 1000A, shunt method is due to inner tensions and ingratiate with corresponding impact, measure the error brought larger, cannot calibrate, this problem is one of the difficult problem in microelectronics metrology and measurement field.
Utility model content
Goal of the invention: the utility model makes improvement for above-mentioned prior art Problems existing, namely the utility model discloses the pulse current amplitude calibrating installation of power IGBT module testing apparatus.
Technical scheme: the pulse current amplitude calibrating installation of power IGBT module testing apparatus, comprises Pearson's coil, digitizer, BNC p-wire and short-circuit line,
Described short-circuit line passes perpendicularly through described Pearson's coil and is connected with power IGBT module testing apparatus, described digitizer peripheral hardware measuring junction, and described Pearson's coil is connected with described measuring junction by described BNC p-wire.
A kind of preferred version as the pulse current amplitude calibrating installation of power IGBT module testing apparatus in the utility model: described measuring junction is coaxial cable interface.
A kind of preferred version as the pulse current amplitude calibrating installation of power IGBT module testing apparatus in the utility model: described short-circuit line is low impedance leads.
Be calibrated power IGBT module testing apparatus testing current fixture lead-out terminal "+" end to be connected by short-circuit line short circuit with "-" end, short-circuit line passes perpendicularly through Pearson's thiol, and Pearson's coil measurement terminal is connected to digitizer measures end by BNC p-wire.
The effect of Pearson's coil is the test being controlled this system by testing software.
The effect of digitizer ensures that test procedure completes the control to system by this interface.
Because pulse width range is 10 μ s ~ 50 μ s, ranging pulse width is wanted to reach the signal of 10 μ s, sample rate at least reaches 2 μ s and gathers a point, such sampling rate will reach 500kS/s, therefore, we need the digitizer selecting sampling rate higher than 500kS/s, and its uncertainty of measurement component under this sampling rate should be better than 0.7%.
BNC p-wire---two ends are the female adapter of BNC, and it connects the connecting line adopting band shielding properties, and connecting line inner core connects BNC female adapter inner core connecting line, and the outer core of connecting line is bonding line, are connected with the female adapter shell of BNC.
Short-circuit line Main Function is for power IGBT module testing apparatus current output terminal short-circuit function.
During use, the pulse voltage signal that Pearson's coil measures is realized by the Trigger Function of digitizer, by logarithm value plateau (getting centre 1/3 part of the data obtained after triggering) averaged, as pulse voltage signal measurement result, by Pearson's coil conversion coefficient, calculate pulse current amplitude size, by be calibrated power IGBT module testing apparatus current setting value or displayed value compares the object reaching calibration pulse current amplitude.
Beneficial effect: disclosed in the utility model, the pulse current amplitude calibrating installation of power IGBT module testing apparatus has following beneficial effect the: fast and accurately key parameter-pulse current amplitude of power IGBT module testing apparatus is measured.
Accompanying drawing explanation
The pulse current amplitude calibrating installation connection diagram of Fig. 1 power IGBT module testing apparatus disclosed in the utility model;
Wherein:
1-Pearson coil 2-digitizer
21-measuring junction 3-BNC p-wire
4-short-circuit line 5-power IGBT module testing apparatus
Embodiment:
Below embodiment of the present utility model is described in detail.
As shown in Figure 1, the pulse current amplitude calibrating installation of power IGBT module testing apparatus, comprises Pearson's coil 1, digitizer 2 (concrete model is PXI5122), BNC p-wire 3 and short-circuit line 4,
Short-circuit line 4 passes perpendicularly through Pearson's coil 1 and is connected with power IGBT module testing apparatus 5, digitizer 2 peripheral hardware measuring junction 21, and Pearson's coil 1 is connected with measuring junction 21 by BNC p-wire 3.
In the present embodiment, measuring junction 21 is coaxial cable interface.
In the present embodiment, short-circuit line 4 is low impedance leads.
Be calibrated power IGBT module testing apparatus 5 testing current fixture lead-out terminal "+" end to be connected by short-circuit line 4 short circuit with "-" end, short-circuit line 4 passes perpendicularly through in the middle part of Pearson's coil 1, and Pearson's coil measurement terminal is connected to the measuring junction 21 of digitizer 2 by BNC p-wire 3.
The effect of Pearson's coil 1 (model is 4418) is the test being controlled this system by testing software.
The effect of digitizer 2 ensures that test procedure completes the control to system by this interface.
Because pulse width range is 10 μ s ~ 50 μ s, ranging pulse width is wanted to reach the signal of 10 μ s, sample rate at least reaches 2 μ s and gathers a point, such sampling rate will reach 500kS/s, therefore, we need the digitizer 2 selecting sampling rate higher than 500kS/s, and its uncertainty of measurement component under this sampling rate should be better than 0.7%.
BNC p-wire 3---two ends are the female adapter of BNC, and it connects the connecting line adopting band shielding properties, and connecting line inner core connects BNC female adapter inner core connecting line, and the outer core of connecting line is bonding line, are connected with the female adapter shell of BNC.
Short-circuit line 4 Main Function is the current output terminal short-circuit function for power IGBT module testing apparatus 5.
Above embodiment of the present utility model is elaborated.But the utility model is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Claims (3)
1. the pulse current amplitude calibrating installation of power IGBT module testing apparatus, it is characterized in that, comprise Pearson's coil, digitizer, BNC p-wire and short-circuit line, described short-circuit line passes perpendicularly through described Pearson's coil and is connected with power IGBT module testing apparatus, described digitizer peripheral hardware measuring junction, described Pearson's coil is connected with described measuring junction by described BNC p-wire.
2. the pulse current amplitude calibrating installation of power IGBT module testing apparatus as claimed in claim 1, it is characterized in that, described measuring junction is coaxial cable interface.
3. the pulse current amplitude calibrating installation of power IGBT module testing apparatus as claimed in claim 1, it is characterized in that, described short-circuit line is low impedance leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420765121.0U CN204241638U (en) | 2014-12-05 | 2014-12-05 | The pulse current amplitude calibrating installation of power IGBT module testing apparatus |
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| CN201420765121.0U CN204241638U (en) | 2014-12-05 | 2014-12-05 | The pulse current amplitude calibrating installation of power IGBT module testing apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931771A (en) * | 2015-05-20 | 2015-09-23 | 中国电子技术标准化研究院 | Pulse voltage amplitude measurement device |
| CN107991640A (en) * | 2017-11-27 | 2018-05-04 | 贵州航天计量测试技术研究所 | Discrete Semiconductor Testing System pulse current calibrating installation and calibration method |
-
2014
- 2014-12-05 CN CN201420765121.0U patent/CN204241638U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931771A (en) * | 2015-05-20 | 2015-09-23 | 中国电子技术标准化研究院 | Pulse voltage amplitude measurement device |
| CN107991640A (en) * | 2017-11-27 | 2018-05-04 | 贵州航天计量测试技术研究所 | Discrete Semiconductor Testing System pulse current calibrating installation and calibration method |
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