| 摘要 |
PURPOSE:To enhance efficiency by reducing power loss due to rectifying element through the use of reverse output characteristics of power MOSFET. CONSTITUTION:A power MOSFET is employed in place of a rectifying diode and a counter electromotive force, to be induced in the secondary winding of a choke coil having primary and secondary windings upon turn OFF of a first power MOSFET, is applied on the gate of a second power MOSFET thus lowering ON voltage appearing between source and drain of the second power MOSFET according to the reverse output characteristics of the second power MOSFET. |
