Analysis of the reasons for the ineffectiveness of MOSFET

At this stage in the application of the industry, the application of the first ranked consumer electronics device adapter goods. Ranked second are computer motherboards, computer adapters, LCD monitors and other commodities. Ranked third is the communication network, industrial control systems, automotive electronics and other electrical equipment industry. These products for the demand for MOSFET is also very large, especially today's automotive electronics for the demand for MOSFET have appeared to catch up with the demand for consumer electronics.
From the above example, we can understand the demand for MOSFETs in the country began to continue to expand, but the application of MOSFETs everyone understands the reasons why MOSFETs are ineffective? Next, I'll introduce the six reasons for MOSFET failure:

1, voltage failure is often said to leakage between the source of the BVdss voltage exceeds the rated voltage of the mosfet, and beyond a certain ability to lead to mosfet failure.

2, the current failure that is more than the mosfet safe working range and the invalid, which is divided into Id exceeds the device specifications and the failure caused by its Id is too large, high wear and tear resulting in long-term thermal accumulation of the device and the failure.

3, in the bridge, LLC and other effective to the body diode to carry out current topology, because the body diode has been destroyed and invalid.

4, in the parallel application process, the gate with the circuit parasitic parameters lead to fluctuations will cause resonance failure.

5, in a dry environment, because the human body and the equipment and the static electricity generated by the device will lead to static ineffective.

6. The gate voltage is invalid because of an abnormal operating voltage peak at the gate.

The above is based on MOSFET analysis of the causes of failure, we make corresponding processing operations, there are other issues welcome to consult us online Guanhua Weiye company, can provide you with effective answers and quality service attitude.
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