UCC27282-Q1 Automotive Half-Bridge Driver

Texas Instruments' UCC27282-Q1 is a robust N-channel MOSFET driver with a maximum switch node (HS) voltage rating of 100 V. This driver allows for two N-channel MOSFETs to be controlled in half-bridge or synchronous buck configuration based topologies. Its 3.5 A peak-sink current and 2.5 A peak-source current along with low pull-up and pull-down resistance allows the UCC27282-Q1 to drive large power MOSFETs with minimum switching losses during the transition of the MOSFET Miller plateau. Since the inputs are independent of the supply voltage, the UCC27282-Q1 can be used in conjunction with analog and digital controllers. The input pins and the HS pin can tolerate significant negative voltage improving system robustness. Input interlock further improves robustness and system reliability in high-noise applications.

The enable and disable functionality provides system flexibility by reducing power consumption by the driver and responds to fault events within the system. Undervoltage lockout (UVLO) of 5 V allows systems to operate at lower bias voltages, which is necessary in many high-frequency applications and improves system efficiency in certain operating modes. Small propagation delay and delay matching specifications minimize the dead-time requirement which further improves efficiency. UVLO is provided for the high-side and low-side driver stages forcing the outputs low if the V_DD voltage is below the specified threshold. An integrated bootstrap diode eliminates the need for an external discrete diode in many applications saving board space and reducing system cost. The UCC27282-Q1 is offered in a small package enabling high-density designs.