Multioutput Isolated Power Supply With Selectable Constant Voltage and Constant Current Modes Based on Magnetic Coupling Resonance

A multioutput isolated power supply system based on magnetic coupling resonance (MOIPS-MCR) technology is proposed in this letter. It can not only selectively switch between constant voltage (CV) and constant current (CC) output modes at each receiver but also flexibly adjust the number of receivers, achieving high flexibility, high efficiency, and high security of power supply to multiple devices. The topology of the MOIPS-MCR was first introduced. Then, the output voltage and current expressions for each receiver in different modes were derived, and the principle of adjusting the number of receivers was introduced. An experimental prototype with two receivers was produced to validate the system's performance. Experimental results demonstrate that load-independent CV and CC modes at each receiver of the system and the flexible adjustment of the number of receivers can be achieved.