Research summary of high-power self-balanced DC electronic load Compared with the traditional analog resistive load, electronic load has the advantages of low energy consumption, small size and high performance, and is widely used in the test of power supply, battery and communication equipment. At present, the linear control of DC load mostly wastes energy on power devices by controlling the current of power devices. Because the power consumption of a single power device is limited, in order to realize the measurement task of large current, it is necessary to connect multiple power devices in parallel. At present, the design of high-power electronic load has some defects, such as poor stability and slow response speed. In order to improve these defects, a design scheme of high power self-balanced DC electronic load is proposed. Firstly, the topological structure of high-power self-balanced DC electronic load is designed, and the overall design of electronic load is comprehensively planned. Then TMS320F28030 is selected as the core processor from the aspects of I/O pins, communication mode, development language and design cost, and the selection of the core processor is completed. The hardware circuit design of DSP speed board circuit, sampling circuit, power supply circuit, protection circuit and communication circuit is completed. The design task of electronic load software is completed by CCS programming software; Before debugging, the power board circuit, the core part of electronic load design, is simulated by using professional analog circuit simulation software PSpice, which verifies the accuracy of the power board circuit design. Finally, through the cooperation of software and hardware, the debugging task of the whole electronic load system is completed. The debugging results show that the 5V-300A electronic load designed in this paper can complete the test tasks of constant current, constant voltage, constant resistance and constant power, and the control accuracy, current rise time and output ripple meet the control requirements.