发明授权
US07671623B2 Device for managing the consumption peak of a domain on each powering-up
有权
用于在每次启动时管理域的消费峰值的设备
- 专利标题: Device for managing the consumption peak of a domain on each powering-up
- 专利标题(中): 用于在每次启动时管理域的消费峰值的设备
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申请号: US11701973申请日: 2007-02-02
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公开(公告)号: US07671623B2公开(公告)日: 2010-03-02
- 发明人: Fabrice Blisson
- 申请人: Fabrice Blisson
- 申请人地址: FR Montrouge
- 专利权人: STMicroelectronics S.A.
- 当前专利权人: STMicroelectronics S.A.
- 当前专利权人地址: FR Montrouge
- 代理机构: Gardere Wynne Sewell LLP
- 优先权: FR0601015 20060203
- 主分类号: H03K17/16
- IPC分类号: H03K17/16
摘要:
A device is provided for managing the current consumption peak on each powering-up of a domain in an electronic circuit. A plurality of domains are present and a global power supply grid provides power. Each domain is selectively supplied by a local supply grid connected to the global supply grid via a plurality of commanded switch transistors. A pre-charge transistor is used to pre-charge a domain at powering-up. A command circuit controls operation of the switch transistors through an analog command signal whose slew rate is controlled to ensure that switch transistor conduction is delayed to enable the pre-charge circuit to charge the domain to a sufficient degree that activation of the switch transistor will not draw excessive current. A detection circuit is configured to compare the instant value of the supply voltage with a fixed reference supply voltage and/or to compare, with the value of a fixed command voltage, the instant value of the differential voltage between the global supply voltage and the command voltage.
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