I want to drive mosfet (IRFZ44) as fast as possible using PMW. To do this, I have BD139 NPN transistor to make amplifier. A normal transistor amplifier is as follows: [image] Please suggest sufficient value of R1 & R2 for my application. Do I need any additional component (diode) for PROTECTION o…

Amplifier for high speed mosfet switching

TomGeorge December 6, 2017, 12:47pm 4

Hi,
What is the load?
What is your supply voltage?

If your load is inductive you may have impedance problems as you increase PWM frequency.

Tom...

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