| 摘要 |
PROBLEM TO BE SOLVED: To improve a power supply circuit in power supply efficiency. SOLUTION: A power MOS FET Q1, as the high side of a composite power MOS-FET PM which constitutes a DC-DC converter, is composed of a lateral MOS-FET, and a power MOS-FET Q2 as the low side of the composite power MOS-FET PM is composed of a vertical MOS-FET. |
