4A High Speed Low Side Gate Driver Circuit

The UCC27518 and UCC27519 single-channel, high-speed, low-side gate driver device is capable of effectively driving MOSFET and IGBT power switches. Using a design that inherently minimizes shoot-through current, UCC27518 and UCC27519 are capable of sourcing and sinking high, peak-current pulses into capacitive loads offering rail-to-rail drive capability and extremely small propagation delay typically 17 ns.

4A High-Speed Low-Side Gate Driver Circuit

The UCC27518 and UCC27519 provide 4-A source, 4-A sink (symmetrical drive) peak-drive current capability at VDD = 12 V. The UCC27518 and UCC27519 are designed to operate over a wide VDD range of 4.5 V to 18 V and wide temperature range of -40°C to 140°C. Internal Under Voltage Lockout (UVLO) circuitry on VDD pin holds output low outside VDD operating range.

Features

Low-Cost, Gate-Driver Device Offering Superior Replacement of NPN and PNP Discrete Solutions
Pin-to-Pin Compatible With TI’s TPS2828 and the TPS2829
4-A Peak Source and 4-A Peak Sink Symmetrical Drive
Fast Propagation Delays (17-ns typical)
Fast Rise and Fall Times (8-ns and 7-ns typical)
4.5-V to 18-V Single Supply Range
Outputs Held Low During VDD UVLO (ensures glitch free operation at power-up and power-down)
CMOS Input Logic Threshold (function of supply voltage with hysteresis)
Hysteretic Logic Thresholds for High Noise Immunity
EN Pin for Enable Function (allowed to be no connect)
Output Held Low when Input Pins are Floating
Input Pin Absolute Maximum Voltage Levels Not Restricted by VDD Pin Bias Supply Voltage
Operating Temperature Range of -40°C to 140°C
5-Pin DBV Package (SOT-23)

Device Uses

Switch-Mode Power Supplies
DC-to-DC Converters
Companion Gate Driver Devices for Digital Power Controllers
Solar Power, Motor Control, UPS
Gate Driver for Emerging Wide Band-Gap Power Devices (such as GaN)

Comments

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