A small buck converter has 24 V input and 12 V output. The transistot has Rds(on) = 0.1 Ohms. The diode is modelled as a 1 V drop. Each device has Rtheta(ja) = 40 K/W and Tjucntion < 150 Celsius. You may suggest a switching frequency.
What is the maximum load possible without a heat sink at 20 Celsius ambient?