公开(公告)号：US09136733B2

公开(公告)日：2015-09-15

申请号：US13167250

申请日：2011-06-23

Applicant: Rajesh Narwal ,  Shantanu Goel

Inventor： Rajesh Narwal ,  Shantanu Goel

IPC: H02J1/00 ,  H02J3/00 ,  H02J9/06 ,  G06F1/04 ,  G06F1/26 ,  H02M1/14

CPC classification number: H02J9/061 ,  G06F1/04 ,  G06F1/26 ,  H02J2009/068 ,  H02M1/14 ,  Y10T307/696

Abstract: A system switches between application of a first supply voltage and a second supply voltage to a load. The second supply voltage is a regulated voltage that is generated from the first supply voltage, or is alternatively generated from a reference voltage, such as bandgap. When the load is supplied from the first supply voltage, the regulated voltage is also generated from the first supply voltage. At or after switching the load to the second supply voltage, the regulated voltage is generated instead from the reference voltage. The load is a clock circuit, such as an oscillator. The controlled switching of the supply voltage for the load in the manner described addresses concerns over introducing errors in the output clock signal when the clock circuit's supply voltage is changed.

Abstract translation: 系统在向负载施加第一电源电压和第二电源电压之间切换。 第二电源电压是从第一电源电压产生的调节电压，或者是替代地从参考电压（例如带隙）产生的。 当从第一电源电压提供负载时，也从第一电源电压产生调节电压。 在将负载切换到第二电源电压之后或之后，产生调节电压而不是参考电压。 负载是时钟电路，例如振荡器。 以所述方式控制负载的电源电压切换解决了当时钟电路的电源电压改变时引入输出时钟信号中的误差的问题。

公开(公告)号：US20120326517A1

公开(公告)日：2012-12-27

申请号：US13167250

申请日：2011-06-23

Applicant: Rajesh Narwal ,  Shantanu Goel

Inventor： Rajesh Narwal ,  Shantanu Goel

IPC: H02J1/00

CPC classification number: H02J9/061 ,  G06F1/04 ,  G06F1/26 ,  H02J2009/068 ,  H02M1/14 ,  Y10T307/696

Abstract: A system switches between application of a first supply voltage and a second supply voltage to a load. The second supply voltage is a regulated voltage that is generated from the first supply voltage, or is alternatively generated from a reference voltage, such as bandgap. When the load is supplied from the first supply voltage, the regulated voltage is also generated from the first supply voltage. At or after switching the load to the second supply voltage, the regulated voltage is generated instead from the reference voltage. The load is a clock circuit, such as an oscillator. The controlled switching of the supply voltage for the load in the manner described addresses concerns over introducing errors in the output clock signal when the clock circuit's supply voltage is changed.

Abstract translation: 系统在向负载施加第一电源电压和第二电源电压之间切换。 第二电源电压是从第一电源电压产生的调节电压，或者是替代地从参考电压（例如带隙）产生的。 当从第一电源电压提供负载时，也从第一电源电压产生调节电压。 在将负载切换到第二电源电压之后或之后，产生调节电压而不是参考电压。 负载是时钟电路，例如振荡器。 以所述方式控制负载的电源电压切换解决了当时钟电路的电源电压改变时引入输出时钟信号中的误差的问题。