ACPL-K34T-000E

Overview

The ACPL-K34T-000E is a single-channel, automotive-grade gate driver optocoupler designed for high-speed power switching applications. It features an AlGaAs LED input coupled to an integrated circuit output capable of delivering up to 2.5A drive current. Key electrical parameters include a maximum forward current of 20 mA and a typical forward voltage of 1.5 V. The device provides robust isolation with a 5000 Vrms insulation voltage rating. Timing characteristics include a turn-on time of 10 ns and a pulse width distortion of 40 ns. It operates within a temperature range of -40°C to +125°C and is qualified under AEC-Q100 standards.

Feature Summary

• Integrated 2.5A rail-to-rail output stage optimized for driving power MOSFETs in AC-DC and DC-DC converters.
• Fast propagation delay with tight timing skew to ensure precise control in high-frequency switching environments.
• Automotive qualification (AEC-Q100) ensuring reliability and performance in demanding thermal conditions.

Applications

• Gate driving for power MOSFETs in AC-DC converter circuits
• Gate driving for power MOSFETs in DC-DC converter circuits
• Isolated interfaces in automotive power electronics systems

Procurement Notes

Verify component authenticity through authorized distribution channels to prevent counterfeit risks. Confirm that the specific part number matches the required AEC-Q100 automotive qualification status. Ensure compatibility with existing PCB footprints, specifically the 8-SOIC stretched package dimensions. Validate that the supplier provides original manufacturer documentation and traceability records for quality assurance purposes.

Selection Notes

Select this component when high-speed isolation with significant drive current capability is required for power stages. The 2.5A output current allows direct driving of multiple parallel MOSFETs without additional buffer stages. Consider the 5000 Vrms isolation barrier for safety-critical applications. Evaluate the 10 ns turn-on time against system switching frequency requirements to minimize dead-time losses.

Part Context

This device belongs to the Broadcom ACPL-K34T series of R2Coupler Gate Drive Optocouplers. The series is characterized by its integration of a high-efficiency AlGaAs LED with a specialized output IC. This architecture distinguishes it from standard logic output optocouplers by providing substantial current sourcing and sinking capabilities directly at the output pin.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Verify functional equivalence regarding drive current, isolation voltage, and package dimensions before considering alternative components.