Hello, I have a problem in power supply which i have designed. I have designed a dual supply of 3.3V and 5.4V from 30 V using semtech SC2442H DC DC converter and Infineon BS0604NS2 Mosfet. The problem is that mosfet is getting heated up a lot, it goes to about 100 C. I have calculated the power, it turn to be 0.72 W and the Mosfet can handle upto 2 W. Can some one point why is the mosfet getting heated???Because of this the inductor and capacitor near it is also getting heated up. DC DC converter operating frequency is 250 KHz.
Thanks and regards Praveen