| 摘要 |
PROBLEM TO BE SOLVED: To provide a switching power supply wherein power supply efficiency can be effectively improved. SOLUTION: The switching power supply is so constructed that: the center tap of an isolation transformer is connected to a first output terminal (TOUT1) through an output inductor, the cathodes of first and second diodes (D1, D2) for rectification are connected to one end and the other end of the secondary winding of the isolation transformer, and the anodes of the first and second diodes for rectification are connected to a second output terminal (TOUT2). The switching power supply is provided with: capacitors (CS11, CS21) whose electrodes on one side are connected to the cathode of the first or second diode for rectification, diodes (DS13, DS23) connected between the electrodes of the capacitors on the other side and the first output terminal, and diodes (DS12, DS22) and inductors (LS12, LS22) connected between the electrodes of the capacitors on the other side and the second output terminal. COPYRIGHT: (C)2008,JPO&INPIT
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