First, the parameters of MOS tube selection
1. Load current IL? - It directly depends on the output capacity of the MOSFET;
2, input-output voltage - it is limited by MOSFET load duty ratio capability;
3, switching frequency FS - parameter affects the instantaneous power dissipation of MOSFET switching;
4.? The maximum allowable operating temperature of the MOS tube - this meets the reliability objectives specified by the system.