公开(公告)号：US09899920B2

公开(公告)日：2018-02-20

申请号：US15172120

申请日：2016-06-02

Applicant: MEDIATEK INC.

Inventor： Chien-Wei Kuan ,  Yen-Hsun Hsu ,  Shan-Fong Hong ,  Chih-Chen Li ,  Yu-Te Chao

IPC: G05F1/00 ,  G05F1/573 ,  H02M3/158 ,  H02M1/14 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M1/14 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0032 ,  H02M2001/0048 ,  H02M2003/1586 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A voltage regulator includes a plurality of output stages and a controller. The plurality of output stages are arranged for selectively enabling to generate output voltages and output currents or not according to a plurality of control signals, respectively. The controller is arranged for sensing the output currents of the output stages, and generating the control signals according to the sensed output currents. When the controller generates the control signals to reduce a quantity of the enabled output stages, the controller determines whether a summation of the sensed output currents is greater than a first threshold or not to determine whether to enable more output stages, then a period of time later, the controller selectively determines whether the summation of the sensed output currents is greater than a second threshold or not to determine whether to enable more output stages, wherein the second threshold is lower than the first threshold.

公开(公告)号：US20170077811A1

公开(公告)日：2017-03-16

申请号：US15172120

申请日：2016-06-02

Applicant: MEDIATEK INC.

Inventor： Chien-Wei Kuan ,  Yen-Hsun Hsu ,  Shan-Fong Hong ,  Chih-Chen Li ,  Yu-Te Chao

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M1/14 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0032 ,  H02M2001/0048 ,  H02M2003/1586 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A voltage regulator includes a plurality of output stages and a controller. The plurality of output stages are arranged for selectively enabling to generate output voltages and output currents or not according to a plurality of control signals, respectively. The controller is arranged for sensing the output currents of the output stages, and generating the control signals according to the sensed output currents. When the controller generates the control signals to reduce a quantity of the enabled output stages, the controller determines whether a summation of the sensed output currents is greater than a first threshold or not to determine whether to enable more output stages, then a period of time later, the controller selectively determines whether the summation of the sensed output currents is greater than a second threshold or not to determine whether to enable more output stages, wherein the second threshold is lower than the first threshold.

Abstract translation: 电压调节器包括多个输出级和控制器。 多个输出级被布置用于分别根据多个控制信号选择性地产生输出电压和输出电流。 控制器被布置用于感测输出级的输出电流，并根据感测的输出电流产生控制信号。 当控制器产生控制信号以减少使能的输出级的数量时，控制器确定所感测的输出电流的总和是否大于第一阈值，以确定是否启用更多的输出级，然后是一段时间 之后，控制器选择性地确定所感测的输出电流的总和是否大于第二阈值，以确定是否启用更多输出级，其中第二阈值低于第一阈值。