Abstract
nowadays switch mode power supplies (SMPSs) have already widely adopted fully digital control. The paper proposes a concise and effective data transmission protocol based on the multi- resolution feedback method (MRFM) in the application of multiple isolated power supplies. The MRFM can compress sampling data of the 10-bit analog-to-digital converter (ADC) into the 4-bit code, and greatly improves the data transmission rate. The proposed data transmission protocol consists of data bits and address bits; data bits use the codes generated by the 4-bit/6-bit coding protocol, and address bits use the codes generated by the paired ones-complement code method; through the respective designs of data bits and address bits, the magnetic saturation problem of the pulse transformer is skillfully overcome. Simulation results verify the effectiveness and feasibility of the MRFM.
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