The UCC27288 is a high-voltage gate driver designed to drive both the high-side and the low-side N-channel FETs in a synchronous buck or a half-bridge configurations. The two outputs are independently controlled with two TTL-compatible input signals. The device can also work with CMOS type control signals at its inputs as long as signals meet turn-on and turn-off threshold specifications of the UCC27288. The floating high-side driver is capable of working with HS voltage up to 100 V with respect to VSS. There is no internal bootstrap diode in the UCC27288 device to charge high-side gate drive bootstrap capacitor. An external 100-V (minimum) rated boot diode should be used if bootstrap bias supply is desired for the high-side output. It is also acceptable to use higher voltage external bootstrap diode. A robust level shifter operates at high speed while consuming low power and provides clean level transitions from the control logic to the high-side gate driver. Undervoltage lockout (UVLO) is provided on both the low-side and the high-side power rails.