UCC21540ADWKR

Overview

The UCC21540ADWKR is a reinforced isolation dual-channel gate driver from Texas Instruments, housed in a 14-SOIC package. It features programmable dead time and wide temperature range operation. Key electrical parameters include a maximum propagation delay of 40 ns, a rise time of 5 ns, and a fall time of 6 ns. The device supports output currents of 4 A and 6 A with a power dissipation of 915 mW.

Feature Summary

• Provides galvanic isolation for dual-channel gate driving applications
• Features programmable dead time control for precise switching management
• Includes miller-clamp capability to prevent false turn-on events

Applications

• Industrial motor drives
• Inverter systems
• Power supply designs requiring isolated gate control

Procurement Notes

Verify the specific suffix 'DWKR' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets the required automotive or industrial qualification standards if applicable to your design. Cross-reference the pinout diagram with your PCB layout to avoid orientation errors during assembly.

Selection Notes

Select this component when high-speed switching with minimal delay variation is required. The 5.7 kVrms isolation rating suits applications demanding robust noise immunity. Consider the SOIC-14 footprint constraints and thermal dissipation capabilities relative to your system's power density requirements before finalizing the design.

Part Context

This part belongs to the UCC21540-Q1 family of isolated gate drivers. It is designed to replace legacy optocoupler-based solutions by offering higher speed and better reliability. The device integrates both high-side and low-side drivers on a single chip, simplifying the bill of materials for half-bridge configurations.

Replacement Considerations

Check for direct substitutes within the UCC21540 series, such as the UCC21540A, ensuring pin compatibility. Verify that any alternative maintains the same 5.7 kVrms isolation voltage and SOIC-14 package dimensions to fit existing footprints without redesign.