6.2 Maximum Ratings

As mentioned in Output Voltage Characteristics, the power supply was tested to a maximum input voltage of 24V and remained stable on the output. The theoretical maximum input voltage is decided by the target output voltage and the minimum duty cycle of the PWM signal.

The power supply was also tested to a maximum output power of 5W at an input voltage of 12V. While under this load, the output voltage remained stable. In a less than optimal system, there will be quite substantial switching losses in the transistor, meaning that good heat dissipation is important. These losses reduce efficiency in the circuit. For better performance, chose a switching topology with low on-resistance and fast switching