公开(公告)号：US20140266103A1

公开(公告)日：2014-09-18

申请号：US13843121

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Yuhe Wang ,  Marzio Pedrali-Noy ,  Xuhao Huang ,  Martin Saint-Laurent ,  Xufeng Chen

IPC: G05F1/46

CPC classification number: G05F1/462 ,  G05F1/565 ,  G05F1/575

Abstract: Techniques are described that embed a digital assisted regulator with an LDO regulator on a chip without requiring a capacitor external to the chip and to regulate a voltage without undershoot. The digital assisted regulator responds to information regarding operation of the LDO regulator and to a signal that provides advance notification of a load change. When the advance notification signal is received, the digital assisted regulator pulls a circuit's supply voltage up to a chip's incoming supply voltage. When the correct operating voltage has been reached and any undershoot problem removed, the digital assisted regulator balances the current it provides with the current provided by the LDO regulator, to allow a quick response time for other load changes. Also, bandwidth of an LDO regulator may be expanded by use of an advance notice signal to increase bias current of an LDO output device to meet an upcoming load change.

Abstract translation: 描述了将芯片上的LDO调节器嵌入数字辅助调节器的技术，而不需要芯片外部的电容器并且调节电压而不会下冲。 数字辅助稳压器响应关于LDO调节器的操作的信息以及提供负载变化的提前通知的信号。 当接收到提前通知信号时，数字辅助调节器将电路的电源电压提升到芯片的输入电源电压。 当达到正确的工作电压并消除任何下冲问题时，数字辅助调节器将其提供的电流与LDO调节器提供的电流平衡，以允许其他负载变化的快速响应时间。 此外，LDO调节器的带宽可以通过使用提前通知信号来扩展，以增加LDO输出设备的偏置电流以满足即将到来的负载变化。

公开(公告)号：US09417643B2

公开(公告)日：2016-08-16

申请号：US13842930

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Martin Saint-Laurent ,  Yuhe Wang

IPC: G05F1/46 ,  G05F1/59 ,  H02M3/157 ,  G11C5/14 ,  H02M3/156

CPC classification number: G05F1/468 ,  G05F1/462 ,  G05F1/465 ,  G05F1/59 ,  G11C5/141 ,  G11C5/147 ,  G11C5/148 ,  H02M3/157 ,  H02M2003/1566

Abstract: A method includes receiving, at a voltage regulator, an activity adjustment signal from a digital circuit. The method also includes controlling one or more variable impedance elements of the voltage regulator to modify an output voltage provided to the digital circuit. The output voltage is based at least in part on the activity adjustment signal.

Abstract translation: 一种方法包括在电压调节器处接收来自数字电路的活动调节信号。 该方法还包括控制电压调节器的一个或多个可变阻抗元件以修改提供给数字电路的输出电压。 输出电压至少部分地基于活动调节信号。

公开(公告)号：US20140266143A1

公开(公告)日：2014-09-18

申请号：US13842930

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Martin Saint-Laurent ,  Yuhe Wang

IPC: G05F1/46 ,  H02M3/157

CPC classification number: G05F1/468 ,  G05F1/462 ,  G05F1/465 ,  G05F1/59 ,  G11C5/141 ,  G11C5/147 ,  G11C5/148 ,  H02M3/157 ,  H02M2003/1566

Abstract: A method includes receiving, at a voltage regulator, an activity adjustment signal from a digital circuit. The method also includes controlling one or more variable impedance elements of the voltage regulator to modify an output voltage provided to the digital circuit. The output voltage is based at least in part on the activity adjustment signal.

Abstract translation: 一种方法包括在电压调节器处接收来自数字电路的活动调节信号。 该方法还包括控制电压调节器的一个或多个可变阻抗元件以修改提供给数字电路的输出电压。 输出电压至少部分地基于活动调节信号。