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公开(公告)号：US09863982B2
公开(公告)日：2018-01-09
申请号：US14871636
申请日：2015-09-30
Applicant: QUALCOMM Incorporated
Inventor： Ranjit Kumar Guntreddi , Zengjing Wu , Zhaohui Zhu , Gianluca Valentino
CPC classification number: G01R19/0092 , G05F1/10 , H02M3/156 , H02M2001/0009
Abstract: The embodiments described herein relate to an improved circuit technique for sensing current conducting in a power transistor coupled with an input power supply. The circuit includes a bi-directional current sensing circuit using current sensing transistor gate control. The circuit includes a forward current sensing transistor to sense current conducting in the power transistor during forward mode current of the circuit and a reverse boost current sensing transistor to sense current conducting during reverse current mode of the circuit. A level shifter is also provided with complementary outputs to either turn on the forward current sensing transistor or turn off the reverse boost current sensing transistor when the circuit is in forward current mode, or to turn off the forward current sensing transistor and turn on the reverse boost current sensing transistor when the circuit is in reverse current mode.
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公开(公告)号：US20150046105A1
公开(公告)日：2015-02-12
申请号：US14253415
申请日：2014-04-15
Applicant: QUALCOMM Incorporated
Inventor： Ranjit Kumar Guntreddi , Krishnakumar Gopalakrishnan , Justin T Blackman , Eric I Mikuteit , Todd R Sutton
IPC: G01R31/36
CPC classification number: G01R31/3835 , G01R31/367
Abstract: In one embodiment, a circuit comprises a sensor providing a digital signal responsive to a battery voltage on a battery terminal of a battery. The sensor can be an analog-to-digital convertor. A processor is coupled to the sensor and is configured to calculate a state of charge of the battery based on the digital signal at a first time, the digital signal at a second time, and a stored battery profile of open circuit voltage as a function of state of charge at the second time.
Abstract translation: 在一个实施例中，电路包括响应于电池的电池端子上的电池电压而提供数字信号的传感器。 传感器可以是模数转换器。 处理器耦合到传感器，并且被配置为基于第一时间的数字信号，第二时间的数字信号和作为开关电路的功能的存储的开路电压的电池轮廓来计算电池的充电状态 第二次充电状态。
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公开(公告)号：US20170089958A1
公开(公告)日：2017-03-30
申请号：US14871636
申请日：2015-09-30
Applicant: QUALCOMM Incorporated
Inventor： Ranjit Kumar Guntreddi , Zengjing Wu , Zhaohui Zhu , Gianluca Valentino
CPC classification number: G01R19/0092 , G05F1/10 , H02M3/156 , H02M2001/0009
Abstract: The embodiments described herein relate to an improved circuit technique for sensing current conducting in a power transistor coupled with an input power supply. The circuit includes a bi-directional current sensing circuit using current sensing transistor gate control. The circuit includes a forward current sensing transistor to sense current conducting in the power transistor during forward mode current of the circuit and a reverse boost current sensing transistor to sense current conducting during reverse current mode of the circuit. A level shifter is also provided with complementary outputs to either turn on the forward current sensing transistor or turn off the reverse boost current sensing transistor when the circuit is in forward current mode, or to turn off the forward current sensing transistor and turn on the reverse boost current sensing transistor when the circuit is in reverse current mode.
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