| 摘要 |
PROBLEM TO BE SOLVED: To supply stable voltage without output voltage fluctuating even if it stops the operation of any regulators, and also to improve power efficiency, in a current share type switching power unit consisting of a plurality of regulators each of which has an error amplifier and a hysteresis comparator. SOLUTION: In the current share type switching power unit consisting of a plurality of regulators which have an error amplifier (21) and a hysteresis comparator (22) each, each regulator IC (20) is provided with a terminal (P1) for outputting the output of the error amplifier to outside, and a switch element (SW1) is connected between the output terminal of the error amplifier and the external terminal of a chip, and also a soft start circuit (23) consisting of a time constant circuit for switching on the switch element gradually is provided on the prestage of the control terminal of the switch element. COPYRIGHT: (C)2006,JPO&NCIPI
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