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公开(公告)号：US20150066438A1
公开(公告)日：2015-03-05
申请号：US14473635
申请日：2014-08-29
Applicant: BROADCOM CORPORATION
Inventor： Todd Lee Brooks , Xicheng Jiang , Iuri Mehr , David Joseph Stoops , Vinod Jayakumar , Min Gyu Kim , Hui Zheng , I-Ning Ku , Vinay Chandrasekhar , Yee Ling Cheung
IPC: H03B5/04 , G01R19/00 , G01K1/00 , G01L7/00 , A61B5/021 , H05B33/08 , A61B5/01 , A61B5/024 , A61B5/08 , G01J1/00 , G01N33/00
CPC classification number: H05B33/089 , A61B5/01 , A61B5/021 , A61B5/024 , A61B5/0816 , A61B2562/06 , G01J1/44 , G01K1/02 , G01R19/0092 , H03K3/0231
Abstract: A sensor interface includes on-chip relaxation oscillator circuit and a PLL that operate cooperatively to generate a highly accurate clock signal on-chip using low-power components. A photodiode generates a current signal based on an optical signal that is representative of a sensor signal. An ADC that operates based on the highly accurate clock signal generates a digital signal based on the current signal generated by the photodiode, and a processor processed the digital signal to estimate sensor data within the sensor signal. Examples of characteristics that may be sensed can include environmental characteristics (e.g., temperature, humidity, barometric pressure, etc.) and/or biomedical characteristics (e.g., body temperature, heart rate, respiratory rate, blood pressure, etc.). In desired, an amplifier processes the photodiode-provided current signal before it is provided to the ADC. Also, one or more CDACs that generate feedback currents may be used to reduce noise sensitivity of the sensor interface.
Abstract translation: 传感器接口包括片上弛豫振荡器电路和PLL，其协作地工作以使用低功率元件在片上产生高精度的时钟信号。 光电二极管基于表示传感器信号的光信号产生电流信号。 基于高度精确的时钟信号操作的ADC基于由光电二极管产生的电流信号产生数字信号，并且处理器处理数字信号以估计传感器信号内的传感器数据。 可以感测的特征的实例可以包括环境特征（例如，温度，湿度，大气压力等）和/或生物医学特征（例如体温，心率，呼吸频率，血压等）。 在期望的情况下，放大器在将其提供给ADC之前处理提供的光电二极管的电流信号。 而且，可以使用产生反馈电流的一个或多个CDAC来降低传感器接口的噪声灵敏度。
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公开(公告)号：US09225234B2
公开(公告)日：2015-12-29
申请号：US13843202
申请日：2013-03-15
Applicant: BROADCOM CORPORATION
Inventor： I-Ning Ku , Hui Zheng , Xicheng Jiang
Abstract: A circuit for a charge-pump low-dropout (LDO) regulator may include a comparator circuit configured to control a pass transistor based on an error signal. A pre-charge path may be provided between a supply voltage and an output node of the regulator. The pre-charge path may be configured to allow charging of an output capacitor to a pre-charge voltage during a pre-charge operation mode. The output capacitor may be coupled between the output node of the regulator and ground potential. The pass transistor may be configured to allow charging of the output capacitor during an LDO mode of operation. A charge-pump circuit may be configured to provide a current for charging the output capacitor during the LDO mode of operation.
Abstract translation: 用于电荷泵低压差（LDO）调节器的电路可以包括被配置为基于误差信号来控制传输晶体管的比较器电路。 可以在调节器的电源电压和输出节点之间提供预充电路径。 预充电路径可以被配置为允许在预充电操作模式期间将输出电容器充电到预充电电压。 输出电容器可以耦合在调节器的输出节点和地电位之间。 传输晶体管可以被配置为允许在LDO操作模式期间对输出电容器进行充电。 电荷泵电路可以被配置为在LDO操作模式期间提供用于对输出电容器充电的电流。
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公开(公告)号：US20150155771A1
公开(公告)日：2015-06-04
申请号：US14139257
申请日：2013-12-23
Applicant: Broadcom Corporation
Inventor： I-Ning Ku , Hui Zheng , Jungwoo Song , Xicheng Jiang
CPC classification number: H02M1/14 , H02M3/07 , H02M2003/077
Abstract: Systems, apparatuses, and methods provided for ping-pong charge pumps. Flying capacitors present in ping-pong charge pumps are operated out of phase to increase equalization periods. Out-of-phase operation also decreases voltage differences between flying capacitors during equalization periods thus decreasing ping-pong charge pump output voltage ripple and snapback. The voltages of the flying capacitors may be equalized without the use of an equalization switch. Differential control currents that are based on the voltage difference between the flying capacitors are used to enable or disable the flying capacitors from driving an output load of the ping-pong charge pump during certain phases of operation. A capacitor with a lower voltage may be disabled, thus providing for voltage equalization as the enabled capacitor sources current to the output load. The flying capacitors are also equalized during overlapping time periods in which the flying capacitors are charging.
Abstract translation: 为乒乓电荷泵提供的系统，设备和方法。 乒乓电荷泵中存在的飞电容器异相运行，以增加均衡周期。 异相操作也会在均衡期间降低飞溅电容器之间的电压差，从而减少乒乓电荷泵输出电压纹波和回跳。 可以在不使用均衡开关的情况下使飞行电容器的电压相等。 基于飞跨电容器之间的电压差的差分控制电流用于在某些操作阶段启用或禁用飞镖电容器驱动乒乓电荷泵的输出负载。 可以禁用具有较低电压的电容器，从而在使能电容器电流流向输出负载时提供电压均衡。 飞行电容器在飞行电容器充电的重叠时间段期间也相等。
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Patent Agency Ranking
公开(公告)号：US08923492B2
公开(公告)日：2014-12-30
申请号：US13850355
申请日：2013-03-26
Applicant: Broadcom Corporation
Inventor： Hui Zheng , Sasi Kumar Arunachalam , Alex Jianzhong Chen , Aravind Kumar Padyana , I-Ning Ku , Jungwoo Song , Xicheng Jiang
IPC: H04M11/00
CPC classification number: H04M11/00 , H04M11/062
Abstract: A multi-mode line driver circuit designed to be fabricated in a CMOS process and capable of supporting a plurality of operating modes corresponding, for example, to different profiles of communication standards such as xDSL standards. The line driver circuit incorporates integrated mode switches with a two-stage amplifier architecture to relax amplifier requirements by distributing the signal gain into two amplifier stages. Reconfigurable feedback loops are provided to permit design optimization for particular modes of operation (e.g., ADSL and VDSL compliant modes). In one embodiment implemented as a Class-H amplifier, lift amplifier(s) are provided between a first amplifier stage and a second amplifier stage for controlling voltage supply levels of the second amplifier stage. The lift amplifiers may be enabled by voltage threshold detection circuitry that monitors either the input or the output signals of the first amplifier stage depending on the operable transmission mode.
Abstract translation: 设计为以CMOS工艺制造并能够支持多个操作模式的多模式线路驱动器电路，其例如对应于诸如xDSL标准的通信标准的不同简档。 线路驱动器电路集成了具有两级放大器架构的集成模式开关，通过将信号增益分配到两个放大器级来放大放大器要求。 提供可重构的反馈回路以允许针对特定操作模式（例如，ADSL和VDSL兼容模式）的设计优化。 在实现为H类放大器的一个实施例中，提升放大器设置在第一放大器级和第二放大级之间，用于控制第二放大级的电压电平。 升压放大器可以由电压阈值检测电路使能，电压阈值检测电路根据可操作的传输模式来监视第一放大器级的输入或输出信号。
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公开(公告)号：US20140254779A1
公开(公告)日：2014-09-11
申请号：US13850355
申请日：2013-03-26
Applicant: BROADCOM CORPORATION
Inventor： Hui Zheng , Sasi Kumar Arunachalam , Alex Jianzhong Chen , Aravind Kumar Padyana , I-Ning Ku , Jungwoo Song , Xicheng Jiang
IPC: H04M11/00
CPC classification number: H04M11/00 , H04M11/062
Abstract: A multi-mode line driver circuit designed to be fabricated in a CMOS process and capable of supporting a plurality of operating modes corresponding, for example, to different profiles of communication standards such as xDSL standards. The line driver circuit incorporates integrated mode switches with a two-stage amplifier architecture to relax amplifier requirements by distributing the signal gain into two amplifier stages. Reconfigurable feedback loops are provided to permit design optimization for particular modes of operation (e.g., ADSL and VDSL compliant modes). In one embodiment implemented as a Class-H amplifier, lift amplifier(s) are provided between a first amplifier stage and a second amplifier stage for controlling voltage supply levels of the second amplifier stage. The lift amplifiers may be enabled by voltage threshold detection circuitry that monitors either the input or the output signals of the first amplifier stage depending on the operable transmission mode.
Abstract translation: 设计为以CMOS工艺制造并能够支持多个操作模式的多模式线路驱动器电路，其例如对应于诸如xDSL标准的通信标准的不同简档。 线路驱动器电路集成了具有两级放大器架构的集成模式开关，通过将信号增益分配到两个放大器级来放大放大器要求。 提供可重构的反馈回路以允许针对特定操作模式（例如，ADSL和VDSL兼容模式）的设计优化。 在实现为H类放大器的一个实施例中，提升放大器设置在第一放大器级和第二放大级之间，用于控制第二放大级的电压电平。 升压放大器可以由电压阈值检测电路使能，电压阈值检测电路根据可操作的传输模式来监视第一放大器级的输入或输出信号。
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公开(公告)号：US09756699B2
公开(公告)日：2017-09-05
申请号：US14473635
申请日：2014-08-29
Applicant: BROADCOM CORPORATION
Inventor： Todd Lee Brooks , Xicheng Jiang , Iuri Mehr , David Joseph Stoops , Vinod Jayakumar , Min Gyu Kim , Hui Zheng , I-Ning Ku , Vinay Chandrasekhar , Yee Ling Cheung
IPC: H04B15/00 , H05B33/08 , G01R19/00 , H03K3/0231 , G01K1/02 , A61B5/01 , A61B5/024 , A61B5/08 , A61B5/021 , G01J1/44
CPC classification number: H05B33/089 , A61B5/01 , A61B5/021 , A61B5/024 , A61B5/0816 , A61B2562/06 , G01J1/44 , G01K1/02 , G01R19/0092 , H03K3/0231
Abstract: A sensor interface includes on-chip relaxation oscillator circuit and a PLL that operate cooperatively to generate a highly accurate clock signal on-chip using low-power components. A photodiode generates a current signal based on an optical signal that is representative of a sensor signal. An ADC that operates based on the highly accurate clock signal generates a digital signal based on the current signal generated by the photodiode, and a processor processed the digital signal to estimate sensor data within the sensor signal. Examples of characteristics that may be sensed can include environmental characteristics (e.g., temperature, humidity, barometric pressure, etc.) and/or biomedical characteristics (e.g., body temperature, heart rate, respiratory rate, blood pressure, etc.). If desired, an amplifier processes the photodiode-provided current signal before it is provided to the ADC. Also, one or more CDACs that generate feedback currents may be used to reduce noise sensitivity of the sensor interface.
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公开(公告)号：US09564794B2
公开(公告)日：2017-02-07
申请号：US14139257
申请日：2013-12-23
Applicant: Broadcom Corporation
Inventor： I-Ning Ku , Hui Zheng , Jungwoo Song , Xicheng Jiang
CPC classification number: H02M1/14 , H02M3/07 , H02M2003/077
Abstract: Systems, apparatuses, and methods provided for ping-pong charge pumps. Flying capacitors present in ping-pong charge pumps are operated out of phase to increase equalization periods. Out-of-phase operation also decreases voltage differences between flying capacitors during equalization periods thus decreasing ping-pong charge pump output voltage ripple and snapback. The voltages of the flying capacitors may be equalized without the use of an equalization switch. Differential control currents that are based on the voltage difference between the flying capacitors are used to enable or disable the flying capacitors from driving an output load of the ping-pong charge pump during certain phases of operation. A capacitor with a lower voltage may be disabled, thus providing for voltage equalization as the enabled capacitor sources current to the output load. The flying capacitors are also equalized during overlapping time periods in which the flying capacitors are charging.
Abstract translation: 为乒乓电荷泵提供的系统，设备和方法。 乒乓电荷泵中存在的飞电容器异相运行，以增加均衡周期。 异相操作也会在均衡期间降低飞溅电容器之间的电压差，从而减少乒乓电荷泵输出电压纹波和回跳。 可以在不使用均衡开关的情况下使飞行电容器的电压相等。 基于飞跨电容器之间的电压差的差分控制电流用于在某些操作阶段启用或禁用飞镖电容器驱动乒乓电荷泵的输出负载。 可以禁用具有较低电压的电容器，从而在使能电容器电流流向输出负载时提供电压均衡。 飞行电容器在飞行电容器充电的重叠时间段期间也相等。
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公开(公告)号：US20140266099A1
公开(公告)日：2014-09-18
申请号：US13843202
申请日：2013-03-15
Applicant: BROADCOM CORPORATION
Inventor： I-Ning Ku , Hui Zheng , Xicheng Jiang
IPC: G05F1/46
Abstract: A circuit for a charge-pump low-dropout (LDO) regulator may include a comparator circuit configured to control a pass transistor based on an error signal. A pre-charge path may be provided between a supply voltage and an output node of the regulator. The pre-charge path may be configured to allow charging of an output capacitor to a pre-charge voltage during a pre-charge operation mode. The output capacitor may be coupled between the output node of the regulator and ground potential. The pass transistor may be configured to allow charging of the output capacitor during an LDO mode of operation. A charge-pump circuit may be configured to provide a current for charging the output capacitor during the LDO mode of operation.
Abstract translation: 用于电荷泵低压差（LDO）调节器的电路可以包括被配置为基于误差信号来控制传输晶体管的比较器电路。 可以在调节器的电源电压和输出节点之间提供预充电路径。 预充电路径可以被配置为允许在预充电操作模式期间将输出电容器充电到预充电电压。 输出电容器可以耦合在调节器的输出节点和地电位之间。 传输晶体管可以被配置为允许在LDO操作模式期间对输出电容器进行充电。 电荷泵电路可以被配置为在LDO操作模式期间提供用于对输出电容器充电的电流。
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