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    • 11. 发明授权
    • Multi-output power supply apparatus
    • 多输出电源装置
    • US07586212B2
    • 2009-09-08
    • US11902880
    • 2007-09-26
    • Junichi MoritaTakuya IshiiMikio Motomori
    • Junichi MoritaTakuya IshiiMikio Motomori
    • H04B15/00G05F1/577H03L5/00
    • H02J1/08H02J1/108H02J2001/008Y10T307/352Y10T307/707
    • The present invention provides an efficient multi-output power supply apparatus that enables a reduction in the on voltage of a main switch in a step-down power supply circuit or the like over a wide input range from a low input to a high input. The power supply apparatus includes a first power supply circuit that increases an input voltage from an input power source to output a first output voltage Vo1, and a second power supply circuit that outputs a second output voltage Vo2 obtained from the input voltage via a main switch circuit connected to the input power source. The main switch circuit having a first switch element that is a PMOS transistor and a second switch element that is an NMOS transistor connected to each other in parallel. The first output voltage Vo1 is applied to a gate of the second switch element.
    • 本发明提供了一种有效的多输出电源装置,其能够在从低输入到高输入的宽输入范围内降低降压电源电路等中的主开关的导通电压。 电源装置包括:第一电源电路,其从输入电源增加输入电压以输出第一输出电压Vo1;以及第二电源电路,其经由主开关输出从输入电压获得的第二输出电压Vo2 电路连接到输入电源。 主开关电路具有作为PMOS晶体管的第一开关元件和作为彼此并联连接的NMOS晶体管的第二开关元件。 第一输出电压Vo1被施加到第二开关元件的栅极。