公开(公告)号：US20150137820A1

公开(公告)日：2015-05-21

申请号：US14084398

申请日：2013-11-19

Applicant: QUALCOMM Incorporated

Inventor： Eric I. Mikuteit

IPC: G01R31/36

CPC classification number: G01R31/3644 ,  G01R1/203 ,  G01R15/09 ,  G01R19/0092 ,  G01R31/3624 ,  H01M10/48 ,  H03K2217/0027

Abstract: A circuit comprises a battery field-effect transistor (FET) coupled between a battery and an electronic system so that current from the battery flows through the battery FET to the electronic system. A replica FET couples the battery to a current sensing circuit. One of the battery FET and the replica FET comprises a plurality of parallel FET segments having separate control terminals. A logic block provides a plurality of switch control signals based on a system state input. A switching circuit receives the switch control signals and selectively couples the separate control terminals of the FET segments to one of a first reference voltage terminal or a second reference voltage terminal to independently turn each FET segment on or off. The current sensing circuit provides a voltage indicative of the current flowing through the replica FET.

Abstract translation: 电路包括耦合在电池和电子系统之间的电池场效应晶体管（FET），使得来自电池的电流流过电池FET流到电子系统。 复制FET将电池耦合到电流感测电路。 电池FET和复制FET中的一个包括具有分离的控制端的多个并联FET段。 逻辑块基于系统状态输入提供多个开关控制信号。 开关电路接收开关控制信号，并且将FET段的分离的控制端子选择性地耦合到第一参考电压端子或第二参考电压端子中的一个，以独立地使每个FET段导通或关断。 电流感测电路提供指示流过复制FET的电流的电压。

公开(公告)号：US20140055082A1

公开(公告)日：2014-02-27

申请号：US13785677

申请日：2013-03-05

Applicant: QUALCOMM INCORPORATED

Inventor： Cheong Kun ,  Eric B. Zeisel ,  David Keitel ,  Eric I. Mikuteit ,  Abhijeet V. Dharmapurikar ,  Todd R. Sutton

IPC: H02J7/00

CPC classification number: H02J7/007 ,  H01M10/44 ,  H02J7/0068 ,  H02J7/022 ,  H02J7/044

Abstract: Exemplary embodiments are directed to systems, devices, methods, and computer-readable media for calibrating a charging current. A device may include a charger for conveying an output voltage to a chargeable device. The device may also include a monitoring system including an analog-to-digital converter for measuring a current received by the chargeable device. Further, the device may include a control device configured to receive a charging current value from the monitoring system and convey a signal to the charger in response to a comparison of the charging current value to a target current value.

Abstract translation: 示例性实施例涉及用于校准充电电流的系统，设备，方法和计算机可读介质。 装置可以包括用于将输出电压传送到可计费装置的充电器。 该装置还可以包括监视系统，该监视系统包括用于测量可计费装置所接收的电流的模数转换器。 此外，该装置可以包括配置成从监视系统接收充电电流值并响应于充电电流值与目标电流值的比较而将信号传送到充电器的控制装置。