A n-channel, enhancement mode MOSFET has the following parameters:

A n-channel, enhancement mode MOSFET has the following parameters:

IDSS = 1mA

RDS(ON) = 50mΩ

TD(ON) = 60ns

tR = 100ns

tD(OFF) = 70ns

tF = 250ns T

he MOSFET operates in a dc motor where the supply voltage is 120V. The winding resistance of the motor is 1.5Ω The peak load current (ID) through the MOSFET is 25A and the switching frequency is 40kHz. The duty cycle of the control circuit is 60%.

1. the total power loss in the MOSFET;

2. the total power dissipated in the load.