Four-switch BUCK-BOOST development board

The BUCK-BOOST power development board developed by the authors, PSC, for power hobbyist learning, uses the CC-PSC-NC-SA 3.0 open source license.

Using Stm32G474 as the microcontroller, this type of microcontroller has a high-precision timer and ADC, which is very suitable for digital power supply development.

The development board can detect the input and output voltage and current information for the feedback loop, the current sampling adopts INA240 differential op amp, and the voltage sampling adopts op amp MCP6022;

The main circuit has a protection function, the trunk series fuse is used for overcurrent protection, and the parallel TVS is used for overvoltage protection;

The development board integrates stlinkV3 and supports online debugging and virtual serial port, which is convenient for developers to debug.

With CAN communication and serial communication, support the development of host computer software, and realize the programmable output of power supply;

Onboard LED, buttons and other IO devices, OLED screen is convenient to display power operation information;

Users can verify the PID, TYPE II/III and other control schemes through the development board, and can also change the development board to BUCK and BOOST topologies according to their own needs.