Detailed description of SPWM inverter power supply module based on STM32 single chip microcomputer
Function Description
This module can convert 4.5V to 35V DC input voltage into ±4.5V-±35V AC voltage. The module uses STM32F030F4P6 microcontroller to generate SPWM waves to drive the L298 module. The L298 module integrates H-bridge circuit and integrates the H-bridge drive The circuit greatly reduces the difficulty of SPWM driving the H bridge. You only need to add an LC filter circuit at the output of the L298 to filter out the smooth sinusoidal voltage waveform, which can be loaded, and the output current can reach 1.5A; it is convenient for you to learn from the MCU SPWM principle; can also control the output amplitude and frequency through serial port commands;
STM32 single-chip microcomputer (STM32F030F4P6) generates two SPWM waves, and the on-board serial port download interface is convenient for users to program by themselves;
The latter LC filter output, the waveform smoothness is high;
Output 50HZ sinusoidal AC voltage;
Input DC voltage range (4.5~35V);
Output AC effective voltage range (3.1~24V);
The maximum output current is 1.5A;
Wide voltage input, no need for additional driver IC power supply
Information Description
The attached content provides the PDF version of the schematic diagram.
The program is written in C language, compiled by keil software, and the file is the project source code.
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