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Voltage-withstanding detection system and method for subunit based on DBC substrate

A technology of withstand voltage detection and subunits, which is applied in the direction of testing dielectric strength, semiconductor/solid-state device testing/measurement, etc., can solve problems such as instability, cumbersome connections, and potential safety hazards, and achieve effective withstand voltage testing and improve qualification efficiency, lower test and production costs

Inactive Publication Date: 2015-09-02
XIAN YONGDIAN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When using the connecting line that comes with the testing equipment for testing, two operators are required first, the connection is cumbersome, and the testing efficiency is relatively low
Secondly, during the test, the contact between the probe and the subunit is done manually, which is unstable and has potential safety hazards

Method used

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  • Voltage-withstanding detection system and method for subunit based on DBC substrate
  • Voltage-withstanding detection system and method for subunit based on DBC substrate

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Embodiment Construction

[0026] The invention discloses a subunit withstand voltage detection system based on a DBC substrate. The subunit includes a DBC substrate and a chip welded and connected to the DBC substrate. The withstand voltage detection system includes a withstand voltage detector and a detection device electrically connected to the withstand voltage detector. Tooling, testing tooling includes an insulating base plate and a number of test probes that are movably arranged on the insulating base plate.

[0027] Preferably, several probe mounting posts are arranged on the insulating base plate, the probe mounting posts are rotatably arranged on the insulating base plate, and the probe mounting posts are electrically connected to the test probes.

[0028] Preferably, the probe mounting post is provided with a probe mounting hole that is level with the insulating base, and the test probes are movably installed in the probe mounting holes.

[0029] Preferably, the test probe includes a connecti...

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Abstract

The invention discloses a voltage-withstanding detection system and a method for a subunit based on a DBC substrate. The subunit comprises the DBC substrate and a chip welded and connected with the DBC substrate. The voltage-withstanding detection system comprises a voltage-withstanding detector and a detection tool electrically connected with the voltage-withstanding detector. The detection tool comprises an insulating base plate and a plurality of test probes movably arranged on the insulating base plate. The voltage-withstanding detection system and the method for the subunit based on the DBC substrate can achieve rapid, safe and effective voltage-withstanding tests on the subunit. The subunit qualified rate is improved. The testing and producing cost is also lowered.

Description

technical field [0001] The invention relates to the technical field of semiconductor packaging, in particular to a DBC substrate-based subunit withstand voltage detection system and method. Background technique [0002] Plastic-encapsulated IPM (Intelligent Power Module, Intelligent Power Module) is a new type of control module that integrates the IGBT chip and its drive circuit, control circuit and overcurrent, undervoltage, short circuit, overheating and other protection circuits. It is a complex and advanced power module that can automatically realize complex protection functions such as overcurrent, undervoltage, short circuit and overheating, so it has intelligent features. At the same time, it has the advantages of low cost, miniaturization, high reliability, and easy use. It is widely used in frequency conversion home appliances, inverter power supplies, industrial control and other fields, and its social and economic benefits are considerable. [0003] DBC (Direct B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/66G01R31/12
Inventor 邢毅
Owner XIAN YONGDIAN ELECTRIC