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    Pre-Charge Technique For A Voltage Regulator
    1.
    发明申请
    Pre-Charge Technique For A Voltage Regulator 有权
    电压调节器的预充电技术

    公开(公告)号：US20160370816A1

    公开(公告)日：2016-12-22

    申请号：US14740386

    申请日：2015-06-16

    申请人： Silicon Laboratories Inc.

    发明人： Dazhi Wei ,  Gang Yuan ,  Erik Pankratz ,  Imranul Islam ,  Praveen Kallam ,  Axel Thomsen ,  Kenneth Wilson Fernald ,  Jinwen Xiao

    IPC分类号： G05F1/575

    CPC分类号： G05F1/575 ,  G05F1/56 ,  H02M3/1588 ,  Y02B70/1466

    摘要： In one embodiment, an apparatus includes a controller to control a voltage regulator. The controller may have a first comparator circuit to compare a first reference voltage to a feedback voltage. In turn, the first comparator circuit may include: a first comparator having a first input terminal to receive the feedback voltage and a second input terminal to receive the reference voltage and an output node to output an error signal based on the comparison; and a first pre-charge circuit coupled between the first input terminal and the output node configured to pre-charge a first portion of a compensation network to a pre-charge level. The first controller may further include a second comparator circuit coupled to the first comparator circuit compare the error signal to a ramp signal and to generate a first control output to control a power train of the voltage regulator in a first mode of operation.

    摘要翻译： 在一个实施例中，一种装置包括用于控制电压调节器的控制器。 控制器可以具有第一比较器电路，以将第一参考电压与反馈电压进行比较。 反过来，第一比较器电路可以包括：第一比较器，具有用于接收反馈电压的第一输入端子和用于接收参考电压的第二输入端子和输出节点，以基于该比较来输出误差信号; 以及耦合在所述第一输入端子和所述输出节点之间的第一预充电电路，被配置为将补偿网络的第一部分预先充电到预充电电平。 第一控制器还可以包括耦合到第一比较器电路的第二比较器电路，将误差信号与斜坡信号进行比较，并产生第一控制输出，以在第一操作模式下控制电压调节器的传动系。

    Apparatus for Battery Charger and Associated Methods
    2.
    发明申请
    Apparatus for Battery Charger and Associated Methods 有权

    公开(公告)号：US20170187199A1

    公开(公告)日：2017-06-29

    申请号：US14979516

    申请日：2015-12-28

    申请人： Silicon Laboratories Inc.

    发明人： Dazhi Wei ,  Praveen Kallam

    IPC分类号： H02J7/00

    CPC分类号： H02J7/007 ,  H02J7/0052 ,  H02J7/0068

    摘要： An apparatus includes a voltage regulator to regulate a voltage from a power source and to provide an output current at an output. The apparatus further includes a battery charger, coupled to the voltage regulator, to provide a charge current. The apparatus further includes a controller to control the charge current such that the charge current is less than or equal to a current available from the power source minus the output current.

    Low power switched-capacitor comparator
    3.
    发明授权
    Low power switched-capacitor comparator 有权

    公开(公告)号：US10348283B1

    公开(公告)日：2019-07-09

    申请号：US15902798

    申请日：2018-02-22

    申请人： Silicon Laboratories Inc.

    发明人： Jeffrey L. Sonntag ,  Svajda Miroslav ,  Dazhi Wei

    IPC分类号： H03K5/24 ,  H02M1/00 ,  G05F1/46 ,  H02M3/155

    摘要： A voltage converter includes a comparator that continuously monitors an output voltage of the voltage converter. The comparator includes a first comparator core utilizing first and second switched capacitors and a second comparator core using third and fourth switched capacitors. The first comparator core is powered down or in a refresh mode while the second comparator core is monitoring the output voltage. The second comparator core is powered down or in the refresh mode while the first comparator core is monitoring the output voltage. The first and second switched capacitors are configured in series with an amplifier stage of the first comparator core while the first comparator core is monitoring the output voltage. The refresh mode charges the first (third) and second (fourth) switched capacitors to a scaled version of the output voltage and a reference voltage less an offset voltage, respectively.

    Pre-charge technique for a voltage regulator
    8.
    发明授权
    Pre-charge technique for a voltage regulator 有权

    公开(公告)号：US09958888B2

    公开(公告)日：2018-05-01

    申请号：US14740386

    申请日：2015-06-16

    申请人： Silicon Laboratories Inc.

    发明人： Dazhi Wei ,  Gang Yuan ,  Erik Pankratz ,  Imranul Islam ,  Praveen Kallam ,  Axel Thomsen ,  Kenneth Wilson Fernald ,  Jinwen Xiao

    IPC分类号： G05F1/575 ,  G05F1/56 ,  H02M3/158

    CPC分类号： G05F1/575 ,  G05F1/56 ,  H02M3/1588 ,  Y02B70/1466

    摘要： In one embodiment, an apparatus includes a controller to control a voltage regulator. The controller may have a first comparator circuit to compare a first reference voltage to a feedback voltage. In turn, the first comparator circuit may include: a first comparator having a first input terminal to receive the feedback voltage and a second input terminal to receive the reference voltage and an output node to output an error signal based on the comparison; and a first pre-charge circuit coupled between the first input terminal and the output node configured to pre-charge a first portion of a compensation network to a pre-charge level. The first controller may further include a second comparator circuit coupled to the first comparator circuit compare the error signal to a ramp signal and to generate a first control output to control a power train of the voltage regulator in a first mode of operation.