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