| 摘要 |
PROBLEM TO BE SOLVED: To increase current or power capacity of a power IC for control, a thin DC/DC converter with a diode, a planar reactor, and a planar capacitor, and a thin power supply using the converter. SOLUTION: A plurality of LC units 21a-21c, where planar reactors 23a-23c and planar capacitors 24a-24c are formed in one piece are connected in parallel to form a current capacity increase type. Or the plurality of LC units 21a-21c, where the planar reactors 23a-23c and the planar capacitors 24a-24c are formed in one piece are set to a multi-output type, where each output terminal is provided as the power capacity increased type. By performing molding on a card- type battery in a single body, a card-type power supply with substantially the same size as that of the card-type can be achieved.
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