| 摘要 |
PROBLEM TO BE SOLVED: To improve the capability of supplying current to a dynamic load, where current consumption becomes instantaneously large, and to feed power to a steady-state load, where the variational width of the current consumption is small, in an efficient and stable manner. SOLUTION: A switching supply circuit comprises a first transformer, having the core of an amorphous magnetic body; a second transformer having the core of a ferrite magnetic body; a first switching element for enabling current to flow to the primary-side wiring of the first transformer, in accordance with a first drive signal; a second switching element for enabling current to flow to the primary-side wiring of the second transformer, in accordance with a second drive signal; first and second output circuits for generating respective first and second output voltages, based on the voltages generated in the secondary-side wiring of the first and second transformers; and first and second control circuits for generating the first and second drive signals, respectively independently. COPYRIGHT: (C)2008,JPO&INPIT
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