RAA227063 Overview
The device integrates power supplies that power internal analog and logic circuitry, high-side and low-side drivers, and a dedicated supply for powering external microcontrollers. The device also features a low-power Sleep mode that consumes only 20µA to maximize battery life in portable applications. The driver control inputs can be configured to either 3-phase LI/HI or 3-phase PWM modes. Three accurate differential amplifiers with adjustable gain are integrated to support ground-side shunt current sensing or low-side rDS(ON) current sensing for each bridge. The device can also support sensorless operation using back EMF in brushless DC motors. Extensive protection functions include bridge voltage UV protection, buck-boost OV/UV/OC protection, charge pump UV protection, MOSFET drain-tosource voltage OC protection, current sense overcurrent protection, thermal warning, and shutdown....