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[Data] Shirutoku Report No. 52 #Avalanche Test (1)

Avalanche breakdown, UIS test circuit and waveforms, etc.! Explanation of avalanche rating tests for power MOSFETs.

★★Shirutoku Report: Useful Information You Should Know★★ The avalanche rating measured in avalanche testing refers to the amount of energy that a power device can withstand before it begins to conduct current rapidly and ultimately fails when a voltage exceeding its breakdown voltage is applied. This report explains avalanche breakdown and UIS test circuits and waveforms using diagrams. To verify whether there are any issues in the event that the device enters avalanche mode, it is necessary to investigate the avalanche rating of power MOSFETs when designing power electronics circuits. [Contents] ■ Image of avalanche breakdown ■ Test circuit and waveform for measuring avalanche rating *For more details, please refer to the PDF document or feel free to contact us.

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[Information] Shirutoku Report No. 99 #About SiC MOSFETs

The performance of MOSFETs is compared using a performance index called FoM! Measurement conditions vary by manufacturer.

★★Shirutoku Report: Useful Information You Should Know★★ SiC MOSFETs have the characteristic of high voltage resistance compared to Si, while also having low resistance. Leveraging this feature, many products are seen replacing high-voltage IGBTs with SiC MOSFETs. This time, I would like to talk about MOSFETs. If you want to know about SiC diodes, please refer to Shirutoku Report No. 12. 【Contents】 ■Comparison examples of Si-MOSFET, IGBT, and SiC-MOSFET ■Do not compare solely based on ON resistance ■When replacing with SiC, be mindful of changing the drive voltage *For more details, please refer to the PDF document or feel free to contact us.

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[Information] Shirutoku Report No. 106 # Introduction to Principle Verification

Check if only a part of the function performs the intended operation! Here is a simple example.

★★Shirutoku Report: Useful Information You Should Know★★ At WTI, we conduct design and development tailored to our customers' requests, and this time we will discuss principle verification. Here, principle verification refers to the process of confirming basic operations and characteristics before starting full-scale product design. When there is a request for new development and it is believed that there may be technical challenges, we may suggest starting with principle verification. [Contents] ■ About Principle Verification ■ Confirmation of whether the MOSFET for preventing inrush current functions as intended *For more details, please refer to the PDF document or feel free to contact us.

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