![]() Pin number 5 is for ground of power supply. Pin 2 is anode point of input stage light emitting diode and pin 3 is cathode point of input stage. Pin number 1 and 4 are not connected to any point. ![]() It is clearly shown in figure that led at input stage and photo detector diode at output stage is used to provide isolation between input and ouput. ![]() Since the Optocoupler is the most basic method for isolation. You must drive the MOSFET between its gate and source terminals. ![]() To know about totem pole output and its used a mosfet driver. Mosfet Driver Circuit Using Optocoupler Optocoupler isolated driver circuits. NOTE: the current required to drive a MOSFET gate is very low but peak current somehow greater than average current. How to use MOSFET driver? MOSFET driver ciruits are used to drive MOSFETS in high side or low side. The gate-driver circuit is often included in the same package as the optocoupler, so two separate optocoupler-gate-driver ICs are commonly required to complete the isolated half bridge-increasing the physical solution size. FOD3182S MOSFET Gate Driver Optocoupler 3 A output current, high-speed MOSFET optocoupler from ON Semiconductor It consists of an aluminum gallium arsenide (AlGaAs) light emitting diode (LED) optically coupled to a CMOS detector with PMOS and NMOS output power transistors integrated circuit.
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