UCC27517ADBVT

Gate Driver Overview

The UCC27517ADBVT is a single-channel high-speed low-side gate driver designed for driving MOSFETs and IGBTs. It features symmetric 4A peak source and sink current capability with rail-to-rail output drive. The device operates within a VDD range of 4.5V to 18V and supports an extended temperature range from -40°C to +125°C. Key electrical parameters include a typical propagation delay of 13ns, rise time of 9ns, and fall time of 7ns. It utilizes hysteretic logic for noise immunity and includes internal pull-up/pull-down resistors for safe default states.

Gate Driver Feature Summary

• Dual input configuration allows flexible selection between inverting (IN-) and non-inverting (IN+) control signals using the same component.
• Hysteretic logic design provides wide threshold hysteresis to ensure excellent noise immunity against signal interference.
• Internal pull-up and pull-down resistors on input pins maintain the output in a low state when inputs are floating, enhancing system safety.

Gate Driver Applications

• Switching mode power supplies
• DC-DC converters
• Motor control systems
• Uninterruptible power supplies (UPS)
• Gate driving for wide bandgap devices such as GaN transistors

Gate Driver Procurement Notes

Verify the suffix ADBVT corresponds to the SOT-23-5 package and tape-and-reel quantity specified by Texas Instruments. Confirm the operating temperature grade matches the A variant (-40°C to +125°C) rather than the standard B variant (+140°C). Ensure the ordering part number aligns with the specific packaging format required for your assembly line processes.

Gate Driver Selection Notes

Select this component when a compact single-channel solution is required for low-side switching applications. It is suitable for designs needing symmetric 4A drive strength with minimal propagation delay. The dual-input feature simplifies layout for both inverting and non-inverting control schemes without requiring additional logic gates or separate driver ICs.

Gate Driver Part Context

This device belongs to the UCC27517 family of high-speed gate drivers. It shares core specifications with variants like UCC27517DBVR but differs in package type and manufacturing lot characteristics. The 'A' designation typically indicates a specific temperature rating or quality tier compared to standard commercial versions within the same functional family.

Gate Driver Replacement Considerations

UCC27517DBVR offers identical electrical performance but may differ in maximum operating temperature and reel quantity. UCC27517ADBVQ1 is the automotive-grade equivalent certified under AEC-Q100 standards. Verify pinout compatibility and thermal requirements before substituting any alternative part numbers.