UCC21550AQDWRQ1

Overview

The UCC21550AQDWRQ1 is an automotive-grade, optically isolated dual-channel gate driver designed for IGBT applications. It features a 16-pin SOIC package and supports dual low-side, dual high-side, or half-bridge configurations. The device delivers a peak source current of 4A and a peak sink current of 6A. It offers a common-mode transient immunity (CMTI) exceeding 125V/ns and operates within a junction temperature range of –40°C to +150°C. Key electrical parameters include a typical propagation delay of 33ns, a maximum pulse width distortion of 5ns, and a maximum VDD power-on delay of 10µs.

Feature Summary

• Optical isolation architecture with dedicated DIS and DT pins for flexible control
• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• High-speed switching capability with minimal pulse width distortion
• Integrated UVLO protection across all supply rails

Applications

• IGBT gate driving in automotive power electronics
• Half-bridge converter topologies
• Dual high-side or dual low-side drive circuits

Procurement Notes

Verify the specific suffix 'QDWRQ1' to confirm the tape-and-reel packaging format and automotive grade designation. Ensure the design accounts for the required optical input interface characteristics. Confirm that the SOIC-16 footprint matches the PCB layout specifications. Validate that the operating voltage ranges align with the system's power supply constraints before finalizing the procurement order.

Selection Notes

Select this component when optical isolation is required for galvanic separation in automotive environments. It is suitable for designs needing independent channel control via dedicated disable and dead-time pins. Consider the 4A/6A output currents for driving medium-power IGBTs. The wide temperature range supports harsh automotive thermal conditions without derating.

Part Context

This part belongs to the UCC21550-Q1 family of isolated gate drivers from Texas Instruments. It shares functional similarities with other members of the series but is distinguished by its specific automotive qualification and optical coupling method. The family targets robust industrial and automotive motor control and power conversion applications requiring high reliability.

Replacement Considerations

Direct substitutes within the same family include UCC21550ADWKRQ1 and UCC21551AQDWKRQ1. Verify pinout compatibility and specific insulation ratings when cross-referencing these alternatives. Ensure the replacement maintains the required optical input interface and automotive grade certification.