发明授权
- 专利标题: Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages
- 专利标题(中): 用于为半导体集成电路器件提供多个电源电压的电源电路
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申请号: US11101483申请日: 2005-04-08
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公开(公告)号: US07928601B2公开(公告)日: 2011-04-19
- 发明人: Hidekiyo Ozawa , Hidenobu Ito , Chikara Tsuchiya
- 申请人: Hidekiyo Ozawa , Hidenobu Ito , Chikara Tsuchiya
- 申请人地址: JP Yokohama
- 专利权人: Fujitsu Semiconductor Limited
- 当前专利权人: Fujitsu Semiconductor Limited
- 当前专利权人地址: JP Yokohama
- 代理机构: Arent Fox, LLP
- 优先权: JP2004-379718 20041228
- 主分类号: H02J1/00
- IPC分类号: H02J1/00
摘要:
A DC-DC converter for controlling the order for providing a semiconductor integrated circuit device with a plurality of power supply voltages. A switch control circuit controls activation and inactivation of a transistor of the switch circuit based on the comparison result of a first voltage and a reference voltage and a notification signal provided to the switch control circuit. The switch control circuit generates a second voltage that is higher than the first voltage when the first voltage is higher than the reference voltage and the notification signal indicates that other semiconductor integrated circuit devices are ready to operate.
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