Triple gate driver IC for three-phase motor drive applications

02-12-2015 | Texas Instruments | Power

This post is sponsored by Texas Instruments.

The Texas Instruments (TI) DRV8305 is a gate driver IC for three-phase motor
drive applications. It provides three high-accuracy trimmed and temperature
compensated half bridge drivers, each capable of driving a high-side and
low-side N-type MOSFET. A charge pump driver supports 100% duty cycle and
low voltage operation. The gate driver can also handle load dumps up to 45V.

The device uses automatic handshaking when switching to prevent current
shoot through. Accurate VDS of both the high-side and low-side MOSFETs
conditions are sensed to protect external MOSFETs during over current.

The DRV8305 includes three current shunt amplifiers for accurate current
measurements that support bi-directional current sensing with adjustable
gain. It also has an integrated voltage regulator and controller to support
a MCU or additional system power needs.

The SPI provides detailed fault reporting and flexible parameter settings
such as gain options for the current shunt amplifier, slew rate control of
the gate drivers, and various protection features.

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