TIDUF28 November 2023
Figure 2-1 shows the system block diagram of the TIDA-010255 320-VDC input, high-efficiency, hot-side MCU controlled 3-phase power stage using six fast switching GaN FETs with integrated driver, protection and temperature reporting. Buck converter modules with integrated inductors and bootstrap supplies reduce the PCB size for power management and gate-drive bias supply. Accurate, shunt-based phase current sensing is achieved with the isolated delta-sigma modulator AMC1306M05. The DC-link voltage is sensed with a non-isolated AMC1035 delta-sigma modulator and an analog feedback option is provided for the three phase voltages. A dual-connector option with 3.3-V I/O allows connection to a C2000™ MCU controlCARD or to other MCUs, such as the Sitara™ AM2631.