Broadcom ACNU-4803/-4804 gate drive interface optocouplers

The ACNU-4803 and ACNU-4804 High CMR Intelligent Power Module are high-speed optocouplers containing a AlGaAs LED and photo detector with a built-in Schmitt trigger to provide logic-compatible waveforms, eliminating the need for additional wave shaping.

Key features

• 11-mm creepage and 10.5-mm clearance
• Positive output type (totem pole output)
• Truth table guaranteed: Vcc from 4.5V to 30V
• Performance specified for common IPM applications over industrial temperature range

Additional features

The totem pole output eliminates the need for a pull-up resistor and allows for direct drive of Intelligent Power Module or as a gate driver. Minimized propagation delay difference between devices makes these High CMR Intelligent Power Module optocouplers an excellent solution for improving inverter efficiency through reduced switching dead time. The ACNU-4803 has an increased common mode transient immunity of 30kV/µs minimum at VCM = 1000V guaranteed over wide operating temperature range, whereas the ACNU-4804 has an increased common mode transient immunity of 50kV/µs minimum at VCM = 1500V guaranteed over wide operating temperature range.

Further features:

• LED drive current: 12mA (min)
• Minimum 30 kV/µs high common-mode rejection at VCM= 1000 V (ACNU-4803)
• Minimum 50 kV/µs high common-mode rejection at VCM= 1500 V (ACNU-4804)
• Low propagation delay, TPLH / TPHL: 120ns / 150ns (max)
• Minimized Pulse Width Distortion (PWD)
• Compact, auto-insertable SSO-8 package
• Industrial temperature range: -40°C to 105°C
• High speed: 10MBd typ
• Hysteresis
• Worldwide safety approval: UL 1577 (5000 Vrms/min), IEC/EN/DIN EN 60747-5-5

Applications

• IPM (Intelligent Power Module) interface isolation
• Isolated IGBT/MOSFET gate drive
• AC and brushless DC motor drives
• Industrial inverters
• General digital isolation