| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that when an AC-to-DC conversion circuit is constituted by a PFC circuit and a full-bridge circuit, the number of magnetic components and switching elements is increased and power conversion efficiency tends to lower. <P>SOLUTION: Power of an AC power supply 10 is inputted to a converter CNV via a rectifier circuit RC1. The converter CNV takes in an output of the rectifier circuit RC1 via a pair of primary-side coils W1 and W2, and outputs it to a rectifier circuit RC2 via a secondary-side coil W3 magnetically coupled to the primary-side coils W1 and W2. An output of the rectifier circuit RC2 is applied to an output capacitor 14 via a smoothing coil 12. The other terminals of the primary-side coils W1 and W2 are connected to the connection point between switching elements M1 and M3 and the connection point between switching elements M2 and M4, respectively. Power conversion processing is performed by operations of the switching elements M1 to M4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
