18736682. SWITCHING POWER SUPPLY DEVICE (TDK CORPORATION)

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SWITCHING POWER SUPPLY DEVICE

Organization Name

TDK CORPORATION

Inventor(s)

Makoto Sato of Tokyo (JP)

SWITCHING POWER SUPPLY DEVICE

This abstract first appeared for US patent application 18736682 titled 'SWITCHING POWER SUPPLY DEVICE



Original Abstract Submitted

Provided is a switching power supply device in which coefficients of coupling a plurality of secondary windings to a primary winding of a transformer can be made equal, and current imbalance can be eliminated. The switching power supply device includes a planar type transformer, wherein a bridge, in which a plurality of switch elements are connected in series, and a primary winding is provided on a primary side of the transformer, and the switch elements include the switch elements controlled by a first on time, and the switch elements controlled by a second on time different from the first on time.