公开(公告)号：EP3250977A1

公开(公告)日：2017-12-06

申请号：EP15826005.9

申请日：2015-12-30

申请人： Qualcomm Incorporated

发明人： FU, Zhengming ,  DOYLE, James, Thomas ,  DARBANIAN, Nazanin ,  PANDEY, Shree Krishna ,  CAO, Yi

IPC分类号： G05F1/575 ,  H02M3/158

CPC分类号： G05F3/08 ,  G05F1/575 ,  H02M3/158 ,  H02M3/1582 ,  H02M2001/0045 ,  H02M2003/1566

摘要： Operational mode changes in a system-on-a-chip (SoC) integrated circuit in a complex device such as a mobile phone cause spikes in current demand which can cause voltage droops that disrupt operation of the SoC. A hybrid parallel power supply capacitively couples a switching-mode power supply and a low-dropout voltage regulator in parallel to provide high efficiency and fast response times. The low-dropout voltage regulator may include a class-AB operational transconductance amplifier driving the coupling capacitor. The switching-mode power supply and the low-dropout voltage regulator can regulate their outputs to slightly difference voltage levels. This can allow the switching-mode power supply to supply most of the SoC's current demands.

公开(公告)号：EP3210288B1

公开(公告)日：2018-12-05

申请号：EP15781795.8

申请日：2015-09-24

申请人： Qualcomm Incorporated

发明人： ZHANG, Chuang ,  DOYLE, James, Thomas ,  MAHMOUDI, Farsheed ,  SHAYAN ARANI, Amirali

IPC分类号： H02M1/12 ,  H02M3/07 ,  H02M7/483 ,  H03H7/01

CPC分类号： H02M3/158 ,  H02M1/14 ,  H02M7/483 ,  H02M2003/072

摘要： A circuit including: a three-level buck converter having: a plurality of input switches and an inductor configured to receive a voltage from the plurality of input switches, the plurality of input switches coupled with a first capacitor and configured to charge and discharge the first capacitor; a second capacitor at an output of the buck converter; and a switched capacitor at an input node of the inductor, wherein the switched capacitor is smaller than either the first capacitor or the second capacitor.

公开(公告)号：EP3210288A1

公开(公告)日：2017-08-30

申请号：EP15781795.8

申请日：2015-09-24

申请人： Qualcomm Incorporated

发明人： ZHANG, Chuang ,  DOYLE, James, Thomas ,  MAHMOUDI, Farsheed ,  SHAYAN ARANI, Amirali

IPC分类号： H02M1/12 ,  H02M3/07 ,  H02M7/483 ,  H03H7/01

CPC分类号： H02M3/158 ,  H02M1/14 ,  H02M7/483 ,  H02M2003/072

摘要： A circuit including: a three-level buck converter having: a plurality of input switches and an inductor configured to receive a voltage from the plurality of input switches, the plurality of input switches coupled with a first capacitor and configured to charge and discharge the first capacitor; a second capacitor at an output of the buck converter; and a switched capacitor at an input node of the inductor, wherein the switched capacitor is smaller than either the first capacitor or the second capacitor.

摘要翻译： 一种电路，包括：三电平降压转换器，具有：多个输入开关和电感器，所述多个输入开关和电感器被配置为从所述多个输入开关接收电压，所述多个输入开关与第一电容器耦合并且被配置为对所述第一电容器 电容器; 在降压转换器的输出处的第二电容器; 以及在所述电感器的输入节点处的开关电容器，其中所述开关电容器小于所述第一电容器或所述第二电容器。