Q.Draw the circuit diagram of Opto coupler isolator circuit for MOSFET/IGBT.

The opto-coupler isolator circuit is drawn as two sides split by an isolation line, with the LED on the control side and the phototransistor on the power side. …

[!TLDR]

Control side (LED driven by the gate signal) and power side (phototransistor to VCC, output to the MOSFET/IGBT gate), separated by a dashed isolation line, all inside an opto-coupler IC.

The opto-coupler isolator circuit for a MOSFET/IGBT is drawn split by a vertical dashed line into a low-voltage control side (left) and a high-voltage power side (right). On the left, the gate signal from the control circuit (e.g. a microcontroller) is applied through a series resistor to an infrared LED. Inside the opto-coupler IC package, the LED emits light onto a phototransistor. On the right, VCC connects to the phototransistor's collector, and the emitter output — through a series resistor — provides the isolated gate drive; this output goes to the gate and to the source/emitter (S/D) of the MOSFET/IGBT power device. When the input is high the LED conducts, light turns the phototransistor ON and the output is hi …