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TO-247-4L Half-Bridge Evaluation Board
User’s Guide
©
2019 ROHM Co., Ltd.
No. 61UG047E Rev.001
August.2019
■
Waveform comparison by using different Cgs capacitances
（
With protection circuits
）
Finally, the measured waveforms when all the Vgs protection circuits are applied are shown in Figure 35. All the abnormalities
during turn on and turn off disappeared, therefore, Cgs is not needed.
Figure 35. Cgs comparison
（
SCT3040KR, with protection circuits
）
Rg=10
Ω
No Cgs
2.2nF
3.3nF
4.7nF
