buck/boost

The main control uses the STM32F334 minimum system board that was previously open source. The driver circuit uses the EG2104 half-bridge driver backplane, which was also previously open source. The current sampling is INA193, and the common mode is 80V.

The buck circuit can be learned as you wish without fear of large ripples. The actual measurement is only 30mv. The high withstand voltage capacitor is very suitable for those who are learning about power supply for the first time. The boost circuit is dangerous, only try it if you have experience. Not only can it be used to learn the classic BUCK and BOOST circuits, but it can also be used to learn the high-precision timer that comes with F334.

Very suitable for beginners to get started with power.

See the attachment for test procedures. When testing, you only need to connect the 12V power supply and the 12V auxiliary power supply on the board, and then give it a 50% duty cycle to see if the output is about 6V, indicating success.

Note: The 12V port on the board should be connected to 12V, and the 5V port should be connected to 5V. Don’t mess around! ! ! Otherwise, snap, it’s gone!