Abstract: In order to adapt to a wide range of input voltage applications,this paper combines the characteristics of variable frequency control（VFC）and phase shift control（PSC）to propose phase shift control of the converter when input high voltage. A hybrid control method that performs variable frequency control when a low voltage is input. The principle and characteristics of the full-bridge CLL resonant converter under two different modes are analyzed in detail,and the resonant network parameters of the converter are designed reasonably. In this paper,a 500 W prototype is taken as an example to verify the hybrid control full-bridge CLL resonant converter. The experimental results show that under the hybrid control strategy,the full-bridge CLL resonant converter can realize the ZVS of the primary switches and the ZCS of the secondary rectifier diodes,and has the characteristics of narrow switching frequency range and high efficiency.