The system uses DSPMS320C28335 as the main control and the single-ended flyback circuit as the core. According to the AD acquisition of the two DC module output circuits, the two channels of PWM are controlled respectively and corresponding adjustments are made, thereby achieving two channels of DC A and B within 4.0A. The module current ratio is adjustable in steps of 0.1 between 0.5 and 2.0. The test shows that this system has achieved all the functions of the basic requirements and extended requirements of the question.
Blockdiagram
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