Switching power supply unit

Details Switching power supply unit Switching power supply unit

2008-12-29

2011-12-06

Behm, Harry (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C363S017000

Reexamination Certificate

active

08072785

ABSTRACT:
A switching power supply unit is provided, which may supply stable output while manufacturing cost is held down. In a smoothing circuit, a magnetic flux in a first circular magnetic path, a magnetic flux in a second circular magnetic path, a magnetic flux generated by a current flowing through a choke coil, and a magnetic flux generated by a current flowing through another choke coil are shared by one another in the inside of a common magnetic core. A current flowing through two choke coils and a current flowing through different, two choke coils are balanced, and thus stabilized. Moreover, in the smoothing circuit, since such a balanced state is automatically kept, a characteristic value of an element or the like need not be adjusted.

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