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    • 6. 发明授权
    • Controlling power loss in a switched-capacitor power converter
    • 控制开关电容电源转换器的功率损耗
    • US08541999B2
    • 2013-09-24
    • US12783728
    • 2010-05-20
    • William C. AthasThomas C. Greening
    • William C. AthasThomas C. Greening
    • G05F1/00H02M3/18
    • H02M3/07H02M2001/0048Y02B70/1491
    • The disclosed embodiments relate to a system that implements a switched-capacitor power converter which is configured to actively control power loss while converting an input voltage to an output voltage. This system includes one or more switched-capacitor blocks (SCBs), wherein each SCB includes a first capacitor and a set of switching devices configured to couple a constant-potential terminal and a time-varying-potential terminal of the first capacitor between the input voltage, the output voltage and a reference voltage. The system also includes a clocking circuit which produces gate drive signals for switching transistors in the one or more SCBs. The system additionally includes a controller configured to actively control the gate drive signals from the clocking circuit to substantially minimize the power loss for the switched-capacitor power converter.
    • 所公开的实施例涉及实现开关电容器功率转换器的系统,其被配置为在将输入电压转换为输出电压的同时主动地控制功率损耗。 该系统包括一个或多个开关电容器块(SCB),其中每个SCB包括第一电容器和一组开关器件,其被配置为将第一电容器的恒定电位端子和时变电位端子耦合在输入端 电压,输出电压和参考电压。 该系统还包括产生用于在一个或多个SCB中的开关晶体管的栅极驱动信号的时钟电路。 该系统还包括控制器,其被配置为主动地控制来自时钟电路的栅极驱动信号,以基本上最小化开关电容器功率转换器的功率损耗。
    • 7. 发明授权
    • Resonant oscillator circuit with reduced startup transients
    • 谐振振荡电路具有降低的启动瞬变
    • US08085103B2
    • 2011-12-27
    • US12629370
    • 2009-12-02
    • William C. Athas
    • William C. Athas
    • H03K3/282
    • H02M3/07H03B5/06H03B5/1212H03B5/1228H03B2200/0094H03B2200/0096
    • Some embodiments of the present invention provide a system that implements a resonant oscillator circuit. This resonant oscillator circuit includes: a first inductor, a second inductor, a first capacitance, and a second capacitance, wherein the first and second inductors are configured to operate with the first and second capacitances to produce resonant oscillations which appear at a first phase output and a second phase output. The system also includes a startup circuit which is configured to start the resonant oscillator circuit in a state where: the first phase output is at a peak voltage; the second phase output is at a base voltage; and currents through the first and second inductors are substantially zero. By starting the resonant oscillator circuit in this state, the oscillations commence without a significant startup transient.
    • 本发明的一些实施例提供一种实现谐振振荡器电路的系统。 该谐振振荡器电路包括:第一电感器,第二电感器,第一电容器和第二电容器,其中第一和第二电感器被配置为与第一和第二电容器一起工作,以产生出现在第一相位输出 和第二相输出。 该系统还包括启动电路,其被配置为在第一相输出处于峰值电压的状态下启动谐振振荡器电路; 第二相输出为基极电压; 并且通过第一和第二电感器的电流基本上为零。 通过在该状态下启动谐振振荡器电路,振荡开始而没有明显的启动瞬变。
    • 8. 发明授权
    • Resonant oscillator with oscillation-startup circuitry
    • 具有振荡启动电路的谐振振荡器
    • US07982548B2
    • 2011-07-19
    • US12540578
    • 2009-08-13
    • William C. Athas
    • William C. Athas
    • H03B5/12
    • H02M3/07H03B5/06H03B5/1212H03B5/1228H03B2200/0094H03B2200/0096
    • Some embodiments of the present invention provide a system that implements a resonant oscillator circuit. This system includes a first inductor with a constant potential terminal coupled to an input voltage, and a time-varying potential terminal coupled to a first phase output. The system also includes a second inductor with a constant potential terminal coupled to the input voltage, and a time-varying potential terminal coupled to a second phase output. The system additionally includes a first n-type transistor with a source terminal coupled to a base voltage, a drain terminal coupled to the first phase output, and a gate terminal coupled to the second phase output. The system also includes a second n-type transistor with a source terminal coupled to the base voltage, a drain terminal coupled to the second phase output, and a gate terminal coupled to the first phase output. Finally, the system includes a startup circuit configured to commence oscillations in the resonant oscillator circuit by energizing the first inductor before energizing the second inductor.
    • 本发明的一些实施例提供一种实现谐振振荡器电路的系统。 该系统包括具有耦合到输入电压的恒定电位端的第一电感器和耦合到第一相输出的时变电位端子。 该系统还包括具有耦合到输入电压的恒定电位端子的第二电感器和耦合到第二相输出端的时变电位端子。 该系统还包括具有耦合到基极电压的源极端子的第一n型晶体管,耦合到第一相位输出的漏极端子和耦合到第二相位输出的栅极端子。 该系统还包括具有耦合到基极电压的源极端子的第二n型晶体管,耦合到第二相位输出的漏极端子和耦合到第一相位输出的栅极端子。 最后,该系统包括启动电路,该启动电路经配置以在激励第二电感器之前激励第一电感器来开始谐振振荡器电路中的振荡。
    • 9. 发明授权
    • Methods and apparatuses for calibrating sensors
    • 用于校准传感器的方法和装置
    • US07945412B2
    • 2011-05-17
    • US12359966
    • 2009-01-26
    • John Gregory DorseyCharles Randolph OverbeckWilliam C. Athas
    • John Gregory DorseyCharles Randolph OverbeckWilliam C. Athas
    • G06F17/40G06F19/00
    • G06F11/24G06F1/28
    • Methods and apparatuses to perform calibration of imprecise sensors for power monitoring in a data-processing system are described. The system includes a load coupled to one or more sensors. An electronic load changes a first input signal through one or more sensors by a predetermined amount. A difference in an output signal from the one or more sensors in response to the changing is obtained. The output signal is measured and sampled. A distribution of samples of the output signal is determined. The estimated parameters of the distribution that most likely to explain actual data are determined. Next, a transfer function of the one or more sensors is determined based on the estimated parameters. The input signal through the load is accurately predicted using the transfer function of the one or more sensors to monitor the power usage by the load.
    • 描述了在数据处理系统中执行用于功率监控的不精确传感器的校准的方法和装置。 该系统包括耦合到一个或多个传感器的负载。 电子负载通过一个或多个传感器将第一输入信号改变预定量。 获得响应于变化的来自一个或多个传感器的输出信号的差异。 测量和采样输出信号。 确定输出信号的样本分布。 确定最可能解释实际数据的分布的估计参数。 接下来,基于估计的参数来确定一个或多个传感器的传递函数。 通过一个或多个传感器的传递函数可精确地预测通过负载的输入信号,以监测负载的功率使用情况。