Design Considerations in Using the Inverter Gate Driver Optocouplers for Variable Speed Motor Drives

Inverter Gate Driver optocouplers are ideally suited for IGBT and MOSFET applications for variable speed motor drives. Their high-output peak currents, combined with high-voltage safety standards, certified galvanic insulation, high common mode noise rejection isolation, solid state device level reliability, and low power dissipation, makes them indispensable inverter gate driver components. This paper discusses design requirements and power dissipation considerations to help designers select appropriate gate driver optocouplers to match inverters' gate charge and power requirements.