# Is the optocoupler placed before or after the gate driver? [closed]

Is it

1. MCU - OPTOCOUPLER - GATE DRIVER - MOSFET

or

1. MCU - GATE DRIVER - OPTOCOUPLER

and why?

EDIT : it cannot provide enough power so it is used for signals therefore option 1.

• Hint: the gate driver's purpose is to drive a "gate". Jul 14 '17 at 14:23
• So number 1. is correct then, thank you ! Jul 14 '17 at 14:24