ACPL-M46U-500E

Overview

The Broadcom ACPL-M46U-500E is a single-channel logic output optocoupler designed for Intelligent Power Module (IPM) applications. It features a high common-mode transient immunity of 30 kV/µs and operates at data rates up to 1 MBd. The device utilizes an AlGaAs LED coupled to a photodetector, housed in a compact SO-5 surface-mount package. Key electrical specifications include a maximum propagation delay of 550 ns, an isolation voltage of 3750 Vrms, and a current transfer ratio of 90%. It supports a maximum continuous output current of 15 mA and functions within a temperature range of -40°C to +125°C.

Feature Summary

• High common-mode transient immunity of 30 kV/µs for reliable operation in noisy environments
• Integrated design optimized specifically for Intelligent Power Module gate drive signals
• Compact SO-5 surface-mount package facilitates space-constrained PCB layouts

Applications

• Intelligent Power Module (IPM) gate drive isolation
• Industrial motor control systems requiring high noise immunity
• Inverter and converter circuits with high dv/dt environments

Procurement Notes

Verify the specific suffix against official datasheets to confirm packaging options such as tube or cut tape. Ensure the component meets required automotive or industrial qualification standards if applicable. Cross-reference pinouts and thermal characteristics with target PCB designs. Confirm RoHS compliance status through manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when high common-mode transient immunity is critical for signal integrity in power electronics. The 1 MBd speed suits moderate-frequency switching applications. Consider the SO-5 footprint for size constraints. Evaluate the 3750 Vrms isolation rating against system safety requirements. Compare propagation delay specifications with timing budgets of the driving circuitry.

Part Context

This part belongs to the Broadcom ACPL series of optocouplers, which are widely used for electrical isolation in power conversion and control circuits. The M46U variant specifically targets IPM applications, distinguishing itself from general-purpose logic output optocouplers by its enhanced transient immunity and tailored performance characteristics for driving power switches.

Replacement Considerations

Check for direct substitutes within the ACPL-M46U family, such as the ACPL-M46U-000E, ensuring identical functional parameters. Verify pin compatibility and isolation ratings before substitution. Consult official replacement guides for any updated versions or end-of-life notices.