Full-bridge soft switching inverter and driving method thereof

摘要

A full-bridge soft switching inverter and a driving method thereof, using zero-voltage switching and conducting a circular current in a circuit including two n-channel MOSFET's so as to drive at least one load such as a cold cathode fluorescent lamp (CCFL) and a signal output device and to achieve low switching loss with high efficiency. The full-bridge soft switching inverter comprises a full-bridge circuit configuration including a first p-channel MOSFET having a first gate, a first drain and a first source; a first n-channel MOSFET having a second gate, a second drain and a second source; a second p-channel MOSFET having a third gate, a third drain and a third source; and a second n-channel MOSFET having a fourth gate, a fourth drain and a fourth source. The first gate driving signal and the second gate driving signal are substantially in-phase, while the third gate driving signal and the fourth gate driving signal are substantially in-phase.