UCC27517 Single Channel Gate Driver Description

The UCC27517 single-channel, high-speed, low-side gate driver device can drive MOSFET and IGBT power switches effectively. UCC27517 can source and sink high peak-current pulses into capacitive loads with rail-to-rail drive capability and extremely short propagation delay, typically 13 ns, thanks to an inherently low shoot-through current design.

At VDD = 12 V, the UCC27517 has a peak-drive current capability of a 4-A source, and a 4-A sink (symmetrical drive). The UCC27517 is intended to operate over a broad VDD range of 4.5 to 18 V and a temperature range of –40°C to 140°C. Outside of the VDD operating range, internal under-voltage lockout (UVLO) circuitry on the VDD pin keeps the output low. The ability to operate at low voltage levels, such as less than 5 V, combined with best-in-class switching characteristics, makes it ideal for driving emerging wide band-gap power-switching devices such as GaN power semiconductor devices.

UCC27517 Single Channel Gate Driver Features

Dual Input Design (Choice of an Inverting (IN– pin) or Noninverting (IN+ Pin) Driver Configuration)

4-A Peak-Source and 4-A Peak-Sink Symmetrical Drive

by VDD Pin Bias Supply Voltage

5-Pin DBV (SOT-23) and 6-Pin DRS (3-mm × 3-mm WSON With Exposed Thermal Pad) Package Options

Fast Rise and Fall Times (9-ns and 7-ns Typical)

Unused Input Pin Can Be Used for Enable or Disable Function

Fast Propagation Delays (13-ns Typical)

Input Pin Absolute Maximum Voltage Levels Not Restricted

Output Held Low When Input Pins Are Floating

Operating Temperature Range of –40°C ~ 140°C

Low-Cost Gate-Driver Device Offering Superior Replacement of NPN and PNP Discrete Solutions

4.5 to 18-V Single-Supply Range

Outputs Held Low During VDD UVLO (Ensures Glitch-Free Operation at Power Up and Power Down)

Hysteretic-Logic Thresholds for High-Noise Immunity

TTL and CMOS Compatible Input-Logic Threshold (Independent of Supply Voltage)

UCC27517 Single Channel Gate Driver Applications

Switched-Mode Power Supplies

DC-DC Converters

Devices (such as GaN)

Companion Gate-Driver Devices for Digital-Power

Gate Driver for Emerging Wide Band-Gap Power

Controllers

Solar Power, Motor Control, UPS