TIDUF31A May 2023 – April 2024
This system starts from a diode bridge with electrolytic capacitors to create a stable DC bus. A simple UCC28881-based high-voltage buck supply provides non-isolated 15V to the gate driver UCC27712 to drive insulated-gate bipolar transistors (IGBT).
The TPS54202 DC/DC controller steps down 15V to 5V, and the TLV74033 provides a low-ripple 3.3V to power on the microcontroller as well as to be a voltage reference for an analog-to-digital converter (ADC).
The MSPM0G1507 microcontroller delivers six PWMs to gate drivers for IGBTs to control the current flow to the motor, the device also senses the DC bus voltage, ambient temperature, Hall-effect or QEI signals, and phase currents to implement the motor control algorithm.