TI UCC27511 High-Speed, Low-Side Gate Driver

Texas Instruments UCC27511 high-speed, low-side gate driver is capable of effectively driving MOSFET and IGBT power switches. TI UCC27511 uses a design that inherently minimizes shoot-through current, making it capable of sourcing and sinking high, peak-current pulses into capacitive loads that offer rail-to-rail drive capability and extremely small propagation delay (typically 13ns). UCC27511 provides 4A source, 8A sink (asymmetrical drive) peak-drive current capability. Strong sink capability in asymmetrical drive boosts against parasitic, Miller turn-on effect. This TI high-speed, low-side gate driver operates over a wide VDD range of 4.5V to 18V and wide temperature range of -40°C to 140°C. It is ideal for use in switch-mode power supplies, DC-to-DC converters, and more.

Features
Low-Cost, Gate-Driver Device Offering Superior Replacement of NPN and PNP Discrete Solutions
4A Peak Source and 8A Peak Sink Asymmetrical Drive
Strong Sink Current Offers Enhanced Immunity Against Miller Turn On
Split Output Configuration (allows easy and independent adjustment of turn-on and turn-off speeds)
Fast Propagation Delays (13ns typical)
Fast Rise and Fall Times (9ns and 7ns typical)
4.5V to 18V Single Supply Range
Outputs Held Low During VDD UVLO (ensures glitch free operation at power-up and power-down)
TTL and CMOS Compatible Input Logic Threshold, (independent of supply voltage)
Hysteretic Logic Thresholds for High Noise Immunity
Dual Input Design (choice of an inverting (IN- pin) or non-inverting (IN+ pin) driver configuration)
Unused Input Pin can be Used for Enable or Disable Function
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

Applications
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)

Functional Diagram


Typical Application：Non-Inverting Input


Typical Application：Inverting Input



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