Four-switch BUCK-BOOST development board

The BUCK-BOOST power supply development board developed by the author PSC for power enthusiasts to learn uses the CC-PSC-NC-SA 3.0 open source protocol.

Stm32G474 is used as the microcontroller. This type of microcontroller has 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 uses the INA240 differential operational amplifier, and the voltage sampling uses the operational amplifier mcp6022;

The main circuit has protection function, the main circuit 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 ports to facilitate developer debugging;

With CAN communication and serial port communication, it supports the development of host computer software and realizes programmable output of the power supply;

Onboard LED, buttons and other IO devices, the OLED screen conveniently displays power operation information;

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