1 Features

• Enhancement Mode Gallium Nitride FETs

(eGANFETs)

• 4-V to 18-V Single Supply Range VDD Range

• Drive Voltage VREF Regulated to 5 V

• 4-A Peak Source and 6-A Peak Sink Drive

Current

• 1-Ω and 0.35-Ω Pullup and Pulldown Resistance

(Maximize High Slew-Rate dV and dt Immunity)

• Split Output Configuration (Allows Turnon and

Turnoff Optimization for Individual FETs)

• Fast Propagation Delays (14-ns Typical)

• Fast Rise and Fall Times (9-ns and 5-ns Typical)

• TTL and CMOS Compatible Inputs (Independent

of Supply Voltage Allow Easy Interface-to-Digital

and Analog Controllers)

• Dual-Input Design Offering Drive Flexibility (Both

Inverting and Noninverting Configurations)

• Output Held Low When Inputs Are Floating

• VDD Under Voltage Lockout (UVLO)

• Optimized Pinout Compatible With eGANFET

Footprint for Easy Layout

• 2.00 mm × 2.00 mm SON-6 Package With

Exposed Thermal and Ground Pad, (Minimized

Parasitic Inductances to Reduce Gate Ringing)

• Operating Temperature Range of –40°C to 140°C

2 Applications

• Switch-Mode Power Supplies

• DC-to-DC Converters

• Synchronous Rectification

• Solar Inverters, Motor Control, UPS

• Envelope Tracking Power Supplies

3 Description

The UCC27611 is a single-channel, high-speed, gate

driver optimized for 5-V drive, specifically addressing

enhancement mode GaN FETs. The drive voltage

VREF is precisely controlled by internal linear

regulator to 5 V. The UCC27611 offers asymmetrical

rail-to-rail peak current drive capability with 4-A

source and 6-A sink. Split output configuration allows

individual turnon and turnoff time optimization

depending on FET. Package and pinout with

minimum parasitic inductances reduce the rise and

fall time and limit the ringing. Additionally, the short

propagation delay with minimized tolerances and

variations allows efficient operation at high

frequencies. The 1-Ω and 0.35-Ω resistance boosts

immunity to hard switching with high slew rate dV and

dt.

The independence from VDD input signal thresholds

ensure TTL and CMOS low-voltage logic

compatibility. For safety reason, when the input pins

are in a floating condition, the internal input pullup

and pulldown resistors hold the output LOW. Internal

circuitry on VREF pin provides an undervoltage

lockout function that holds output LOW until VREF

supply voltage is within operating range. UCC27611

is offered in a small 2.00 mm × 2.00 mm SON-6

package (DRV) with exposed thermal and ground pad

that improves the package power-handling capability.

The UCC27611 operates over wide temperature

range from –40°C to 140°C.