SWITCH CONTROL CIRCUIT AND POWER SUPPLY DEVICE INCLUDING THE SAME

摘要

The power supply device includes a power switch, a rectification diode which rectifies a supplied current in accordance with a switching operation of the power switch to generate an output current, and a switch control circuit which averages a detected sensing voltage corresponding to a sensing voltage which follows a current which flows through the power switch to generate an output current estimating voltage corresponding to the output current.

主权项

1. A power supply device, comprising:
a power switch; a rectification diode configured to rectify a supplied current in accordance with a switching operation of the power switch to generate an output current; and a switch control circuit configured to generate an output current estimating voltage corresponding to the output current by averaging a detected sensing voltage based on a sensing voltage that follows a current flowing through the power switch.