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1. 发明授权

US07898278B2 Power control circuitry, circuitry for analysing a switched power rail, and method of controlling connection of a power source to a switched power rail 有权
标题翻译：功率控制电路，用于分析开关电源轨的电路以及控制电源与切换的电源轨的连接的方法
公开(公告)号：US07898278B2
公开(公告)日：2011-03-01
申请号：US11979541
申请日：2007-11-05
申请人： David Walter Flynn , Leah Elizabeth Schuth , Sachin Satish Idgunji
发明人： David Walter Flynn , Leah Elizabeth Schuth , Sachin Satish Idgunji
IPC分类号： G01R31/28
CPC分类号： H02M3/156 , H03K3/0315 , H03K19/0016 , Y10T307/852
摘要： Power control circuitry is provided for controlling connection of a power source having a source voltage level to a switched power rail to provide power to an associated circuit block. The power control circuitry comprises a switch block for selectively connecting the switched power rail to the power source, and a switch controller for controlling operation of the switch block. A ring oscillator circuit is powered from the switched power rail and produces an oscillating output signal, and analysis circuitry is then used to analyse change in frequency of the oscillating output signal produced by the ring oscillator circuit during a period of time when the switched power rail is not at the source voltage level. The switch controller is then arranged to control at least one aspect of the operation of the switch block in dependence on the analysis. This technique provides a simple and effective digital technique for observing voltage changes on the switched power rail.
摘要翻译：提供功率控制电路用于控制具有源电压电平的电源与切换的电源轨的连接，以向相关的电路块提供电力。功率控制电路包括用于选择性地将切换的电源轨连接到电源的开关块和用于控制开关块的操作的开关控制器。环形振荡器电路由切换的电源轨供电并产生振荡输出信号，然后分析电路用于分析由环形振荡器电路产生的振荡输出信号的频率的变化，在这段时间内，切换的电源轨不在源电压电平。开关控制器然后被布置成根据分析来控制开关块的操作的至少一个方面。该技术提供了一种简单有效的数字技术，用于观察开关式电源轨上的电压变化。

2. 发明申请

US20090115258A1 Power control circuitry, circuitry for analysing a switched power rail, and method of controlling connection of a power source to a switched power rail 有权
标题翻译：功率控制电路，用于分析开关电源轨的电路以及控制电源与切换的电源轨的连接的方法
公开(公告)号：US20090115258A1
公开(公告)日：2009-05-07
申请号：US11979541
申请日：2007-11-05
申请人： David Walter Flynn , Leah Elizabeth Schuth , Sachin Satish Idgunji
发明人： David Walter Flynn , Leah Elizabeth Schuth , Sachin Satish Idgunji
IPC分类号： H01H47/20
CPC分类号： H02M3/156 , H03K3/0315 , H03K19/0016 , Y10T307/852
摘要： Power control circuitry is provided for controlling connection of a power source having a source voltage level to a switched power rail to provide power to an associated circuit block. The power control circuitry comprises a switch block for selectively connecting the switched power rail to the power source, and a switch controller for controlling operation of the switch block. A ring oscillator circuit is powered from the switched power rail and produces an oscillating output signal, and analysis circuitry is then used to analyse change in frequency of the oscillating output signal produced by the ring oscillator circuit during a period of time when the switched power rail is not at the source voltage level. The switch controller is then arranged to control at least one aspect of the operation of the switch block in dependence on the analysis. This technique provides a simple and effective digital technique for observing voltage changes on the switched power rail.
摘要翻译：提供功率控制电路用于控制具有源电压电平的电源与切换的电源轨的连接，以向相关的电路块提供电力。功率控制电路包括用于选择性地将切换的电源轨连接到电源的开关块和用于控制开关块的操作的开关控制器。环形振荡器电路由切换的电源轨供电并产生振荡输出信号，然后分析电路用于分析由环形振荡器电路产生的振荡输出信号的频率在切换的电源轨不在源电压电平。开关控制器然后被布置成根据分析来控制开关块的操作的至少一个方面。该技术提供了一种简单有效的数字技术，用于观察开关式电源轨上的电压变化。

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