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What are the reasons for derating the power module?

Source: Guangzhou Nengda Power Technology Co., Ltd. Time: 2019-11-05 18:21:27 Views:

What is derating design? The derating design scheme is a design scheme for derating power electronic devices. What does derating mean? Is the ground stress in the work of electrical components moderately less than the required rated current, then what good is it to do so? Let's take a look below!


The derating design scheme can delay the applied components and reduce their aging. After all, excess applications are very easy to damage the components. Adjusting the rating can improve the reliability of the components and also improve the stability of the control module. The repair rate is particularly sensitive to working voltage stress, current stress, and temperature stress, so the key to derating design is also for these three levels.


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The following are details of the derating levels of electronic components:

(1) Class I derating: Class I derating is the largest derating. Applicable mechanical faults will seriously endanger safety, cause mission failures, and cause more serious property damage.


(2) Class II derating: The reduction of stress during work has a significant effect on improving the stability of electronic devices. Applicable mechanical faults will reduce the work progress or require unreasonable maintenance costs.

(3) Grade III derating: Grade III adjustment is the least adjustment, and the cost of electronic devices is relatively low. Applicable mechanical faults have only minor harm to the completion of the work schedule, or can be quickly and economically repaired.


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