Description

The FOD8318 is an advanced 2.5 A output current IGBT drive optocoupler capable of driving most 1200 V / 150 A IGBTs. It is ideally suited for fast-switching driving of power IGBTs and MOSFETs used in motor control inverter applications and high-performance power systems. It consists of an integrated gate drive optocoupler featuring low RDS(ON) CMOS transistors to drive the IGBT from rail to rail and an integrated high speed isolated feedback for fault sensing. The FOD8318 has an active Miller clamp fuction to shut off the IGBT during a high dv/dt situation without the need of a negative supply voltage. It offers critical protection features necessary for preventing fault conditions that lead to destructive thermal runaway of IGBTs.

Features

High noise immunity characterized by common mode rejection

– 35 kV / μs Minimum Common Mode Rejection (Vcm = 1500 Vpeak)

2.5 A peak output current driving capability for most 1200 V / 150 A IGBT

Optically isolated fault sensing feedback

Active Miller clamp to shut off the IGBT during high dv/dt without needing a negative supply voltage

“Soft” IGBT turn-off

Built-in IGBT protection

– Desaturation detection

– Under-voltage lock out (UVLO) protection

Wide supply voltage range from 15 V to 30 V

– Use of P-Channel MOSFETs at output stage enables output voltage swing close to the supply rail (rail-to-rail output)

3.3 V / 5 V, CMOS/TTL-compatible inputs

High Speed

– 500 ns max. propagation delay over full operating temperature range

Extended industrial temperate range, -40°C to 100°C temperature range

Safety and regulatory approvals

– UL1577, 4,243 VRMS for 1 min.

– DIN EN/IEC 60747-5-5,1,414 Vpeak working insulation voltage, 8000 Vpeak transient isolation voltage ratings

RDS(ON) of 1 ? (typ.) offers lower power dissipation

User configurable: inverting, non-inverting, auto-reset, auto-shutdown

8 mm creepage and clearance distances

Applications

Industrial inverter

Induction heating

Isolated IGBT drive