ZHCST88A September 2023 – October 2023 LM2104
PRODUCTION DATA
The external gate driver resistor, RGATE, is sized to reduce ringing caused by parasitic inductances and capacitances and also to limit the current coming out of the gate driver.
The peak GH pullup current is calculated in Equation 11.
where
Similarly, the peak GH pulldown current is shown in Equation 12.
where
The peak GL pullup current is shown in Equation 13.
where
The peak GL pulldown current is shown in Equation 14.
where
For some scenarios, if the applications require fast turnoff, an anti-paralleled diode on RGate could be used to bypass the external gate drive resistor and speed up turnoff transition.