Switch control circuit, coupled inductor boost converter including the same, and driving method of the coupled inductor boost converter

摘要

The present invention related to a switch control circuit, a coupled inductor boost converter including the same, and a driving method thereof. The coupled inductor boost converter includes a first inductor connected between an input voltage and a first node, a second inductor connected between the first node and a second node, and a power switch connected between the first node and a ground, and a switch control circuit. The switch control circuit receives a voltage of the second node and turn on the power switch by using the voltage of the second node at a time when a voltage of the first node becomes a zero voltage.

主权项

1. A coupled inductor boost converter comprising:
a first inductor including a first end coupled to an input voltage and a second end directly coupled to a first node; a second inductor including a first end directly coupled to the first node and a second end; a power switch coupled between the first node and a ground; and a switch control circuit configured to measure a voltage at the second end of the second inductor and turn on the power switch based on the voltage of the second node when a voltage of the first node is zero voltage.