Abstract:

SG3525 is a type of monolithic integrated PWM control chip.The system is designed with SG3525 as control core,and a stand-alone prototype of contactless low-power power transfer system possessing the over-current protection function is completed by applying various techniques including high frequency inverter technology,soft switching technology and capacitance compensates technology.The experimental results show that the power transfer efficiency can reach to 78.9% when the distance is 1mm between primary side and secondary side,which proves the system can realize the high-efficiency transfer of the power.

Key words: contactless;SG3525;power transfer