How does the Gate Charge of a FET relate to the bootstrap capacitor value. I am changing out the FETs in my present design, for ones with considerably larger Gate Charge.
Does the increase in max Gate Charge simply mean I need to use a larger capacitor to supply this charge/support the gate?
MEP
If you wish; the capacitor should be >> Ciss. The commonly-used 0.1uF is more than enough.
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Thanks,
- Win
IR do a nice app note on this topic.
Graham
And watch your rise and fall times.
Robert
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