UCC27511DBVR

1FEATURES

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

• 4-A Peak Source and 8-A 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 (13-ns typical)

• Fast Rise and Fall Times (9-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)

• 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

• 6-Pin DBV Package (SOT-23)

2 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)

3 DESCRIPTION

The UCC27511 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, UCC27511 is capable of sourcing and sinking high, peak-current pulses into capacitive loads offering rail-to-rail drive capability and extremely small propagation delay typically 13 ns.

The UCC27511 provides 4-A source, 8-A sink (asymmetrical drive) peak-drive current capability. Strong sink capability in asymmetrical drive boosts immunity against parasitic, Miller turn-on effect. The UCC27511 device also features a unique split output configuration where the gate-drive current is sourced through OUTH pin and sunk through OUTL pin. This unique pin arrangement allows the user to apply independent turn-on and turn-off resistors to the OUTH and OUTL pins respectively and easily control the switching slew rates. UCC27511 is 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. The capability to operate at low voltage levels such as below 5 V, along with best in class switching characteristics, is especially suited for driving emerging wide band-gap power switching devices such as GaN power semiconductor devices.

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