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    Charge measurement calibration in a system using a pulse frequency modulated DC-DC converter
    1.
    发明授权
    Charge measurement calibration in a system using a pulse frequency modulated DC-DC converter 有权

    公开(公告)号：US12019124B2

    公开(公告)日：2024-06-25

    申请号：US17215723

    申请日：2021-03-29

    Applicant: Silicon Laboratories Inc.

    Inventor： Jeffrey L. Sonntag ,  Timothy J. Dupuis ,  Jinwen Xiao

    IPC: G01R31/387 ,  G01R31/3832 ,  G01R31/385

    CPC classification number: G01R31/387 ,  G01R31/3833 ,  G01R31/385

    Abstract: A calibration current load is selectively coupled to an output of a pulse frequency modulated (PFM) DC-DC converter during a calibration operation to increase charge supplied from a battery supplying an input voltage to the converter. A voltage across a sense resistor in series with the battery is integrated during a measurement interval while the calibration current load is coupled to the output. A charge drawn per pulse from the battery is determined based on the sense resistor, the integrated voltage and the number of pulses during the measurement interval. Alternatively, a first PFM frequency is determined with a first calibration current load coupled to the converter output. A second PFM frequency is determined with a second calibration current load. The charge drawn per pulse from the battery is determined based on the first and second PFM frequencies and the first and second calibration current loads.

    Apparatus for mixed signal interface acquisition circuitry and associated methods
    2.
    发明授权
    Apparatus for mixed signal interface acquisition circuitry and associated methods 有权
    用于混合信号接口采集电路和相关方法的装置

    公开(公告)号：US08762586B2

    公开(公告)日：2014-06-24

    申请号：US13799159

    申请日：2013-03-13

    Applicant: Silicon Laboratories Inc.

    Inventor： Clayton Daigle ,  Jinwen Xiao ,  Axel Thomsen ,  Subrata Roy ,  Xiaodong Wang

    IPC: G06F3/00 ,  G06F13/00

    CPC classification number: H03K19/017509

    Abstract: An integrated circuit (IC) includes a plurality of pads adapted to communicate signals with a circuit external to the IC, and a first mixed signal interface block coupled to a first pad in the plurality of pads, where the first mixed signal interface block is adapted to receive a first trigger signal from the circuit external to the IC and to provide a second trigger signal. The IC further includes a second mixed signal interface block coupled to a second pad in the plurality of pads, where the second mixed signal interface block is adapted to receive and track a first input signal from the circuit external to the IC in a first mode of operation of the IC. The second mixed signal interface block is further adapted to generate, in response to the second trigger signal, a first output signal based on the first input signal and to provide the first output signal to a digital core of the IC in a second mode of operation of the IC, where the power consumption of the IC is lower in the first mode of operation than in the second mode of operation.

    Abstract translation: 集成电路（IC）包括适于与IC外部的电路传送信号的多个焊盘以及耦合到多个焊盘中的第一焊盘的第一混合信号接口块，其中第一混合信号接口块被适配 以从IC外部的电路接收第一触发信号并提供第二触发信号。 IC还包括耦合到多个焊盘中的第二焊盘的第二混合信号接口块，其中第二混合信号接口块适于以第一模式的第一模式接收并跟踪来自IC外部的电路的第一输入信号 IC的运作。 第二混合信号接口块还适于响应于第二触发信号而产生基于第一输入信号的第一输出信号，并且在第二操作模式中将第一输出信号提供给IC的数字核心 的IC，其中IC的功耗在第一操作模式中比在第二操作模式中更低。

    CHARGE MEASUREMENT IN A SYSTEM USING A PULSE FREQUENCY MODULATED DC-DC CONVERTER
    3.
    发明申请
    CHARGE MEASUREMENT IN A SYSTEM USING A PULSE FREQUENCY MODULATED DC-DC CONVERTER 审中-公开

    公开(公告)号：US20180180699A1

    公开(公告)日：2018-06-28

    申请号：US15392487

    申请日：2016-12-28

    Applicant: Silicon Laboratories Inc.

    Inventor： Jeffrey L. Sonntag ,  Timothy J. Dupuis ,  Jinwen Xiao

    IPC: G01R35/00 ,  H02J7/00 ,  G01R31/36

    CPC classification number: H02J7/0063 ,  G01R31/3617 ,  G01R31/3675 ,  H02J2007/005

    Abstract: The charge drawn from a battery during each switching event (pulse) of a pulse frequency modulated DC-DC converter is determined during a calibration period. based on differences in pulse rate with different current loading. Another approach calibration approach determines charge drawn from the battery by measuring voltage across a sense resistor while measuring the total pulse rate and while adding sufficient load current to ensure that the voltage is much larger than the residual offset of the measurement system. During operation, the system counts number of pulses are counted and the total charge drawn from the battery is determined based, at least in part, on the charge transferred per pulse during calibration, the operational mode, the battery voltage during calibration and operationally and the output voltage. Based on the total charge drawn and temperature (for temperature dependent battery types), the battery state of charge is estimated.

    CHARGE MEASUREMENT CALIBRATION IN A SYSTEM USING A PULSE FREQUENCY MODULATED DC-DC CONVERTER
    4.
    发明申请
    CHARGE MEASUREMENT CALIBRATION IN A SYSTEM USING A PULSE FREQUENCY MODULATED DC-DC CONVERTER 审中-公开

    公开(公告)号：US20180180698A1

    公开(公告)日：2018-06-28

    申请号：US15392475

    申请日：2016-12-28

    Applicant: Silicon Laboratories Inc.

    Inventor： Jeffrey L. Sonntag ,  Timothy J. Dupuis ,  Jinwen Xiao

    IPC: G01R35/00 ,  G01R31/36

    CPC classification number: G01R31/387 ,  G01R31/3833

    Abstract: A calibration current load is selectively coupled to an output of a pulse frequency modulated (PFM) DC-DC converter during a calibration operation to increase charge supplied from a battery supplying an input voltage to the converter. A voltage across a sense resistor in series with the battery is integrated during a measurement interval while the calibration current load is coupled to the output. A charge drawn per pulse from the battery is determined based on the sense resistor, the integrated voltage and the number of pulses during the measurement interval. Alternatively, a first PFM frequency is determined with a first calibration current load coupled to the converter output. A second PFM frequency is determined with a second calibration current load. The charge drawn per pulse from the battery is determined based on the first and second PFM frequencies and the first and second calibration current loads.

    Pre-Charge Technique For A Voltage Regulator
    6.
    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

    Applicant: Silicon Laboratories Inc.

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

    IPC: G05F1/575

    CPC classification number: G05F1/575 ,  G05F1/56 ,  H02M3/1588 ,  Y02B70/1466

    Abstract: 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.

    Abstract translation: 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。

    Charge measurement in a system using a pulse frequency modulated DC-DC converter
    10.
    发明授权
    Charge measurement in a system using a pulse frequency modulated DC-DC converter 有权

    公开(公告)号：US10270272B2

    公开(公告)日：2019-04-23

    申请号：US15392487

    申请日：2016-12-28

    Applicant: Silicon Laboratories Inc.

    Inventor： Jeffrey L. Sonntag ,  Timothy J. Dupuis ,  Jinwen Xiao

    IPC: H02J7/00 ,  G01R31/3832 ,  G01R31/374

    Abstract: The charge drawn from a battery during each switching event (pulse) of a pulse frequency modulated DC-DC converter is determined during a calibration period. based on differences in pulse rate with different current loading. Another approach calibration approach determines charge drawn from the battery by measuring voltage across a sense resistor while measuring the total pulse rate and while adding sufficient load current to ensure that the voltage is much larger than the residual offset of the measurement system. During operation, the system counts number of pulses are counted and the total charge drawn from the battery is determined based, at least in part, on the charge transferred per pulse during calibration, the operational mode, the battery voltage during calibration and operationally and the output voltage. Based on the total charge drawn and temperature (for temperature dependent battery types), the battery state of charge is estimated.

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