hi ti team :
I want to know LM3434 Main Gate Drive Output , can i adjust it?
Now test VGATE always 6V。Can it be improved。What should I do?
thanks
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hi ti team :
I want to know LM3434 Main Gate Drive Output , can i adjust it?
Now test VGATE always 6V。Can it be improved。What should I do?
thanks
Hello,
Gate drive is generated from VCC, typical 6.9V. The range can be 6.3V to 7.35V. The drive impedance for going high, sourcing, is 2 ohms with 6 ohms being maximum. The drive impedance for going low, sinking, is 1.3 ohms with 4.5 ohms being maximum. To calculate turn on and turn off time of the MOSFET the Vgs curve of the MOSFET at the operating current and voltage is used. It cannot be adjusted unless less drive is needed. This is done by adding a series gate resistor. If increased drive capability is needed an external driver can be added.
What are you trying to drive and why are you concerned about the gate drive?
Best Regards,
hello:
thank you for your help,
I want to change more power MOS, I am not sure if I can drive, so I am thinking that the voltage can be improved.
I understand this。thanks。
Best Regards