A two-stage converter with wide-range is implemented with silicon carbide power devices in this paper. The first stage is a boost converter and the second stage is a fullbridge resonant converter. According to the output voltage range of the system, the corresponding output voltage range through pulse width modulation control is designed for the firststage converter. In this way, the second-stage converter can be operated through near series resonant frequency control, the magnetizing inductance can be designed to be large to reduce circulating current, and with the synchronous rectification technology of the secondary side, the overall system efficiency can be improved.