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KUOWENYUNG
Level 3
Level 3
25 replies posted 100 sign-ins 50 sign-ins

Hello IFXer,

Since trench gate SIC MOSFET has narrow nagative voltage window compare with planner gate SIC MOSFET.
we are care about the gate driver whether build in miller clamp and use zero voltage to turn off SIC MOSFET.
but there is all half bridge topology need use miller clamp function? please help advise.

hard switch: buck, boost, totem pole
soft switch: ACF flyback, LLC, phase shift full bridge

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1 Solution
vigneshkumar
Moderator
Moderator
Moderator
250 sign-ins 50 solutions authored 100 replies posted

Hi,

False turn -ON could happen in Half bridge circuit also.

Miller Clamp is always good to avoid return on especially devices with a low threshold. However, return on can be avoided in normal operation with the RC circuit.

Regards,

Vignesh kumar

View solution in original post

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3 Replies
vigneshkumar
Moderator
Moderator
Moderator
250 sign-ins 50 solutions authored 100 replies posted

Hi ,

Thanks for posting on Infineon community,

Do you want us to suggest devices?

Regards,

Vignesh kumar

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Hi Sir,

just confirm that all half bridge circuit are need miller clamp function gate driver?

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vigneshkumar
Moderator
Moderator
Moderator
250 sign-ins 50 solutions authored 100 replies posted

Hi,

False turn -ON could happen in Half bridge circuit also.

Miller Clamp is always good to avoid return on especially devices with a low threshold. However, return on can be avoided in normal operation with the RC circuit.

Regards,

Vignesh kumar

0 Likes