(a) Technical Field
Embodiments relate to a switch control circuit for zero voltage switching and a buck converter including the same.
(b) Description of the Related Art
A buck converter includes a power switch that receives an input voltage and performs switching and an inductor and a capacitor that are connected to the power switch. A diode may be connected between the inductor and the ground to decrease a flowing inductor current while the power switch is turned off. The buck converter may include a metal-oxide semiconductor field-effect transistor (MOSFET) instead of a diode. The switching of MOSFET may be controlled in synchronization with the switching of the power switch.
The buck converter may operate according to a threshold operation mode in which an inductor current reaches zero. In this case, in order to perform zero voltage switching (ZVS), the buck converter further includes a separate ZVS circuit.