Half-bridge gate driver for N-channel MOSFETs
The Texas Instruments UCC27211D is a high-frequency half-bridge gate driver designed for N-channel MOSFETs in synchronous buck, full-bridge, and three-phase inverter topologies. It delivers 4A peak source and sink current with independent drive channels, enabling fast switching transitions and reduced dead-time losses. The supply range of 8V to 17V accommodates standard bias rails for industrial and telecom power supplies, while the bootstrap high-side voltage withstands up to 120V, covering 48V bus and 72V battery applications.
Junction temperature rating and thermal design
The 140°C TJ max allows headroom for self-heating at high switching frequencies, but the SOIC-8 thermal impedance (RθJA ~120°C/W with minimal copper) limits continuous power dissipation — a ground-plane thermal pad under the package is recommended for sustained high-frequency operation.
Last Buy — sourcing window closing
The UCC27211D is in Last Buy status per the manufacturer. This means the final purchase window is active but will close — no further production runs after the LTB date. Buyers should secure lifetime-buy quantities or qualify a pin-compatible alternative before inventory dries up.