Current sharing circuit for parallel DC-DC converter

A current sharing circuit used for parallel connection of DC-DC converters comprises a plurality of adjusting circuits connected in parallel, each adjusting circuit is connected with one DC-DC converter in series in a one-to-one correspondence mode, and each adjusting circuit comprises a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first triode and a UC2907DWG4 chip. By means of the working mode of the maximum current automatic current sharing method mainly based on the UC2907DWG4 chip, parallel current sharing is achieved, the DC-DC converters connected in parallel evenly bear load power, and the reliability of a power supply system is improved. 一种用于并联DC-DC转换器的均流电路，包括多个并联的调整电路，每个调整电路与一个DC-DC转换器一一对应串联，调整电路包括第一电容、第二电容、第三电容、第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、第一三极管和UC2907DWG4芯片，以UC2907DWG4芯片为主的最大电流自动均流法的工作方式，实现并联均流，使并联的各DC-DC转换器均匀地承担负载功率，提高电源系统可靠性。