UCC27517DBVR

Gate Driver Overview

The UCC27517DBVR is a single-channel high-speed low-side gate driver manufactured by Texas Instruments. It provides symmetrical peak output currents of 4A for both sourcing and sinking. The device operates within a supply voltage range of 4.5V to 18V and supports junction temperatures from -40°C to +140°C. It features typical rise and fall times of 9ns and 7ns respectively, with a propagation delay of approximately 13ns. The input logic thresholds are fixed at 1V and 2.4V, ensuring compatibility with TTL and CMOS standards independent of the supply voltage.

Gate Driver Feature Summary

• Dual-input design allows flexible configuration for both inverting and non-inverting signal paths using separate IN+ and IN- pins.
• Internal hysteretic logic provides wide hysteresis between input thresholds to ensure excellent noise immunity and robust operation.
• Integrated internal pull-up and pull-down resistors on input pins maintain the output in a safe low state when inputs are floating.

Gate Driver Applications

• Switching mode power supplies
• DC-DC converters
• Solar inverters and motor control systems
• Gate driving for Wide Bandgap semiconductors such as GaN devices

Gate Driver Procurement Notes

Verify that the component matches the original Texas Instruments manufacturing specifications rather than third-party equivalents. Confirm the SOT-23-5 package marking aligns with official datasheet requirements. Ensure the supplier provides valid traceability documentation for the silicon die material and assembly source changes referenced in recent production change notices.

Gate Driver Selection Notes

Select this component for applications requiring fast switching speeds and high peak current drive capability in a compact surface-mount footprint. The fixed input threshold voltages simplify interface design with digital controllers. Consider the dual-input architecture if system logic requires both inverted and non-inverted control signals from a single driver channel.

Gate Driver Part Context

This part belongs to the UCC27517 series of high-speed low-side gate drivers. It is designed to efficiently drive MOSFETs and IGBTs while minimizing shoot-through current risks through rail-to-rail drive capability. The device is optimized for modern power electronics where rapid switching transitions are critical for efficiency.

Gate Driver Replacement Considerations

The UCC27517DBVT serves as an alternative packaging option within the same product family. Verify pinout compatibility and thermal characteristics before substituting different package variants or cross-brand equivalents.