Texas Instruments' DRV8305 device is a gate driver IC for three-phase, motor-drive applications. The device provides three high-accuracy and temperature-compensated, half-bridge drivers that are each capable of driving a high-side and low-side N-channel MOSFET. A charge-pump driver supports 100% duty cycle and low-voltage operation. The device can tolerate load-dump voltages up to 45 V.

The DRV8305 device includes three bidirectional current-shunt amplifiers for accurate, low-side current measurements that support variable gain settings and an adjustable offset reference.

The DRV8305 device has an integrated voltage regulator (3.3 V or 5 V) to support an MCU or other system power requirements. The voltage regulator can be interfaced directly with a standard LIN physical interface to allow low system standby and sleep currents.

The gate driver uses automatic handshaking when switching to prevent current shoot through. The V_DS of both the high-side and low-side MOSFETs is accurately sensed to protect the external MOSFETs from over-current conditions. The SPI provides detailed fault reporting, diagnostics, and device configurations such as gain options for the current-shunt amplifier, individual MOSFET over-current detection, and gate-drive slew-rate control.

Device options include the following: DRV8305N voltage reference; DRV83053, 3.3 V, 50 mA LDO; and DRV83055, 5 V, 50 mA LDO.