| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC-DC converter which has small current loss accompanying switching. SOLUTION: In the DC-DC converter 1, a high-side power transistor Q1 and a low-side power transistor Q2 are connected in series between high-potential power wiring PH and low-potential power wiring PL. Further, an LC filter 15 is connected between a connection point LX and an output terminal Tout. Then the range of a potential applied to the gate of the high-side power transistor Q1 and the range of a potential applied to the gate of the low-side power transistor Q2 are set inside the range (Vin1 to GND) between potentials applied to both ends of a circuit comprising the high-side power transistor Q1 and low-side power transistor Q2. COPYRIGHT: (C)2010,JPO&INPIT
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