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LM74700-Q1: About the difference between I(GATE) and I(VCAP)

Part Number: LM74700-Q1

Hi TI-team

I would like to use lm74700-q1 as an ideal diode.

Is I(GATE) used when calculating turn ON and turn OFF times ?

Please tell me how to calculate in that case.

I(VCAP) (300uA) is used to calculate T(DRV_EN).

Is there a difference between T(DRV_EN) and turn-on time?

 

My specifications are as follows.

VinMAX=50V

Iout=50A, MAX=100A

The MOSFETs selected from 20mV/50A≦RDS(ON)≦50mV/50A=0.4mΩ≦RDS(ON)≦1mΩ are two IAUC120N06S5L011 used in parallel.

https://www.infineon.com/dgdl/Infineon-IAUC120N06S5L011-DataSheet-v01_01-EN.pdf?fileId=8ac78c8c7fb5929e017fc1b680d712ef

Ciss :8770pF

C(VCAP):8770pF×2×10=175.4nF

Calculating from the formula below, T(DRV_EN) will be approximately 3.9ms.

Best Regards,

Koji Hayashi