FOD3120: High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

The FOD3120 is a 2.5A output current gate drive optocoupler, capable of driving most 800V/20A IGBT/MOSFET. It is suited for fast switching driving of power IGBT and MOSFETs used in motor control inverter applications, and high performance power system.

It utilizes Fairchild’s proprietary coplanar packaging technology, Optoplanar®, and optimized IC design to achieve high noise immunity, characterized by high common mode rejection.

It consists of a gallium aluminum arsenide (AlGaAs) light emitting diode (LED) optically coupled to an integrated circuit with a high-speed driver for push-pull MOSFET output stage.

Features

• High noise immunity characterized by 35kV/µs minimum common mode rejection
• 2.5A peak output current driving capability for most 800V/20A IGBT
• Use of P-channel MOSFETs at output stage enables output voltage swing close to the supply rail
• Wide supply voltage range from 15V to 30V
• Fast switching speed
  • 400ns max. propagation delay
  • 100ns max. pulse width distortion
• 400ns max. propagation delay
• 100ns max. pulse width distortion
• Under-Voltage LockOut (UVLO) with hysteresis
• Extended industrial temperate range, -40°C to 100°C temperature range
• Safety and regulatory approved
  • UL1577, 5000 VRMS for 1 min.
  • IEC60747-5-2
• UL1577, 5000 V_RMS for 1 min.
• IEC60747-5-2
• R_DS(ON) of 3Ω (typ.) offers lower power dissipation
• >8.0mm clearance and creepage distance (option ‘T’)
• Industrial Inverter
• Uninterruptible Power Supply
• Induction Heating
• Isolated IGBT/Power MOSFET Gate Drive

Application Notes