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.

It utilizes onsemi’s proprietary OPTOPLANAR® coplanar

packaging technology and optimized IC design to achieve high noise

immunity, characterized by high common mode rejection and power

supply rejection specifications.

The device is housed in a compact 16−pin small outline plastic

package that meets the 8 mm creepage and clearance requirements.

Features

• High Noise Immunity Characterized by Common Mode Rejection

♦ 35 kV / s 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

♦ 250 ns Max. Propagation Delay over Full Operating

Temperature Range

Features (continued)

• 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