Update: This post is deprecated and will no longer be updated, as the RPi Pico cannot produce stable PWM signals. For example, it may pull up a whole pair of complementary PWM signals when applying the official APIs. Consequently, this leads to catastrophic damage (i.e., shoot-through) in half-bridge applications.<\/p>\n\n\n\n
Therefore, it is suggested to use MCUs specifically designed for digital-control power converters such as STM32G4 and 280049, which provide industry-level high-resolution timers.<\/p>\n\n\n\n
An application for a digital-control buck converter with STM32G4 is developed and can be referenced here<\/a>.<\/p>\n\n\n\n Design idea:<\/strong> Designing a DC\/DC Converter (chopper) with the use of Raspberry Pi Pico MPU to convert input DC voltage from 0-30V to 5V to power up electronic devices such as Raspberry Pi AI Kit.<\/p>\n\n\n\n Converter Type:<\/strong> Synchronous Buck Converter (Synchronous Rectification\/Synchronous Switching)<\/p>\n\n\n\n Input Voltage: <\/strong>Li-Po Battery in range of 1s-6s (Maximum 30VDC)<\/p>\n\n\n\n Output Voltage:<\/strong> 5VDC<\/p>\n\n\n\n Rated Power:<\/strong> 25W (Rated Current: 5A)<\/p>\n\n\n\n Reason for choosing Raspberry Pico as a microcontroller:<\/p>\n\n\n\n Familiar with Raspberry Pi Pico \u2714<\/p>\n\n\n\n Familiar with STM32 \u274c<\/p>\n\n\n\n Reference:<\/strong><\/p>\n\n\n\n
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