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Power module test system and test method thereof

A power module and test system technology, applied in the direction of single semiconductor device testing, etc., can solve problems such as poor flexibility, high test cost, and incomplete assessment of device performance, and achieve the effects of improving comprehensiveness, reducing test cost, and reducing capacity

Inactive Publication Date: 2010-06-30
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a power module test system with high test coverage, low test cost and high flexibility in view of the shortcomings of the existing power module test system and test method, such as incomplete assessment of device performance, high test cost, and poor flexibility. and its test method

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  • Power module test system and test method thereof
  • Power module test system and test method thereof

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Embodiment Construction

[0031] The accompanying drawings show specific embodiments of the present invention, and the present invention will be further described below through the accompanying drawings and the embodiments.

[0032] As a preferred implementation of the power module test system, such as figure 1 The power module test system shown includes:

[0033] Oscilloscope 2, multimeter 3, current probe 4, inductor 5, pulse generator 6, drive module 7, high-voltage power supply 8, low-voltage power supply 10, pulse generator 6 generates pulses with variable width, and is amplified by the drive module 7 to control power switching devices The IGBT is turned on and off to control the output voltage and current of the IGBT power module 1, so as to achieve the purpose of evaluating the performance of the power device. The low-voltage power supply 10 provides a 5V power supply to the pulse generator 6 and a 5V, ±15V power supply to the drive module 7 . The high voltage power supply 8 is used to charge ...

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Abstract

The invention relates to a power module test system and a test method thereof, which comprises an oscilloscope, a multimeter, a current probe, an inductor, a pulse generator, a drive module, a high voltage power source and a low voltage power source, wherein the low voltage power source provides power source for the pulse generator and the drive module, the high voltage power source charges a capacitor of an IGBT power module to be tested, the oscilloscope acquires the voltage and current waveforms of the IGBT power module, and the inductor is connected between the C pole and the E pole of the IGBT power module via the current probe. Electric quantity in the charged capacitor is utilized for power module testing, and the characteristic that inductive load has barrier effect on varied current is utilized to test the follow current capacity of a diode in the IGBT power module. The invention not only can reduce the capacity of the required power supply source and save cost, but also increases test coverage rate.

Description

technical field [0001] The invention relates to a power module testing system and its testing method applied in the field of power semiconductors, especially a chopper testing system and its testing method applied to the performance parameter testing of IGBT power modules. The system and method can also be used for power Testing of performance parameters of other similar power modules in the semiconductor field. Background technique [0002] At present, there are many types of converter product modules and various test methods. The traditional test method uses the continuous chopping test method to test the power device. This method uses a resistive load. During the chopping test, the power supply needs to continuously charge the supporting capacitor. The control unit continues to provide continuous pulse signals to the driving circuit of the switching device under test to drive the switching device to turn on and off, thereby detecting a series of key performance indicators...

Claims

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Application Information

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IPC IPC(8): G01R31/26
Inventor 武松剑易卫华周利军陈长春谢明明李涛刘丹陈义韬
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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