ACPL-K34T-500E

Overview

The ACPL-K34T-500E is a single-channel automotive-grade gate driver optocoupler from Broadcom Limited. It integrates high-speed logic input with a 2A peak output capable of driving power MOSFETs. Key electrical parameters include a 5000 Vrms isolation voltage, 10V to 20V output supply range, and 2A high/low output current. The device features fast propagation delay and tight timing skew, optimized for AC-DC and DC-DC converter applications.

Feature Summary

• Integrates a high-speed photodiode array input with a dedicated 2A gate driver output stage for efficient power switching control.
• Provides robust galvanic isolation with a 5000 Vrms rating to protect low-voltage control circuits from high-voltage power stages.
• Includes integrated desaturation detection and overcurrent sensing capabilities to enhance system reliability in automotive environments.

Applications

• Gate driving for power MOSFETs in AC-DC converters
• Gate driving for power MOSFETs in DC-DC converters
• Automotive power electronics systems requiring AEC-Q100 qualification

Procurement Notes

Verify the specific suffix '500E' corresponds to the lead-free and RoHS-compliant variant when sourcing. Confirm that the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the design supports the required 10V to 20V output supply voltage range for proper gate driver operation. Cross-reference the datasheet revision date to ensure compatibility with latest automotive standards.

Selection Notes

Select this component when a single-channel, high-current (2A) gate drive solution is needed with integrated fault protection. It is suitable for designs requiring tight timing skew and fast propagation delays compared to standard logic output optocouplers. Consider the AEC-Q100 qualification if the application is strictly automotive. Evaluate thermal dissipation needs given the 60mW power dissipation rating.

Part Context

This part belongs to the ACPL series of automotive optocouplers designed for high-reliability power conversion. It differs from standard logic output variants by providing higher sink/source current and integrated desaturation sensing. The family focuses on bridging control and power domains in electric vehicle and industrial power supplies.

Replacement Considerations

Check for direct substitutes within the ACPL-K3xT series or other Broadcom automotive gate driver optocouplers with similar 2A output capability and SOIC-8 packaging. Verify pinout compatibility and isolation voltage ratings before substitution.