SWITCH CONTROL CIRCUIT, COUPLED INDECTOR BOOST CONVERTER COMPRISING THE SAME, AND DRIVING METHOD OF THE COUPLED INDECTOR BOOST CONVERTER

摘要

The present invention relates to a switch control circuit, a coupled inductor boost converter including the same, and a driving method. The coupled inductor boost converter comprises a first inductor connected between an input voltage and a first point; a second inductor connected between the first point and a second point; a power switch connected to the first point and the ground; and the switch control circuit. The switch control circuit turns on the power switch at a time point which the voltage of the first point is zero by receiving the voltage of the second point and using the same. [Reference numerals] (100) Zero voltage detection unit;(110) Clamp;(120) Error amplifier;(130) PWM controller