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公开(公告)号：US10088884B2
公开(公告)日：2018-10-02
申请号：US14921276
申请日：2015-10-23
Applicant: NXP B.V.
Inventor： Kenneth Jaramillo , Madan Mohan Reddy Vemula , Sharad Murari , Abhijeet Chandrakant Kulkarni , Krishnan Tiruchi Natarajan
Abstract: A protocol can specifie a power-sourcing voltage range that indicates power sourcing capabilities. Additional power sourcing capabilities can be communicated using voltage variations within the power-sourcing voltage range. A power-sourcing device can provide power to an external power-sinking device over a wired connection containing a plurality of wires. A voltage control circuit can be configured to drive a voltage over a wire of the plurality of wires. Processing circuitry can communicate, using the voltage control circuit, first power-sourcing capabilities to the external power-sinking device by setting the voltage over the wire to a value within the power-sourcing voltage range. The processing circuitry can also communicate, using the voltage control circuit, the additional power sourcing capabilities of the power-sourcing device using voltage variations on the wire, the voltage variations maintaining voltage on the wire within the power-sourcing voltage range.
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12.发明申请公开(公告)号：US20180152183A1
公开(公告)日：2018-05-31
申请号：US15364014
申请日：2016-11-29
Applicant: NXP B.V.
Inventor： Madan Mohan Reddy Vemula
CPC classification number: G06F13/4282 , G06F13/4068 , H02J7/0052 , H02J2007/0062 , Y02D10/14 , Y02D10/151
Abstract: Embodiments of a resistor module of a USB interface device and a method for operating a resistor module of a USB interface device are described. In an embodiment, a resistor module of a USB interface device includes a pull-down resistor connectable to a USB power-sourcing device, a switch connected between the pull-down resistor and a fixed reference voltage, an energy storage unit connectable to the USB power-sourcing device and configured to store electrical energy in response to a current from the USB power-sourcing device, a switch control unit connected to the energy storage unit and configured to control the switch with a control signal in response to a voltage of the energy storage unit, and a glitch filter connected to the switch and to the switch control unit and configured to remove a glitch in the control signal. Other embodiments are also described.
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公开(公告)号：US20170115711A1
公开(公告)日：2017-04-27
申请号：US14921276
申请日：2015-10-23
Applicant: NXP B.V.
Inventor： Kenneth Jaramillo , Madan Mohan Reddy Vemula , Sharad Murari , Abhijeet Chandrakant Kulkarni , Krishnan Tiruchi Natarajan
CPC classification number: G06F1/266 , G06F13/102 , G06F13/4282 , G06F2213/0042 , H04L12/10 , H04L12/40045
Abstract: A protocol can specifie a power-sourcing voltage range that indicates power sourcing capabilities. Additional power sourcing capabilities can be communicated using voltage variations within the power-sourcing voltage range. A power-sourcing device can provide power to an external power-sinking device over a wired connection containing a plurality of wires. A voltage control circuit can be configured to drive a voltage over a wire of the plurality of wires. Processing circuitry can communicate, using the voltage control circuit, first power-sourcing capabilities to the external power-sinking device by setting the voltage over the wire to a value within the power-sourcing voltage range. The processing circuitry can also communicate, using the voltage control circuit, the additional power sourcing capabilities of the power-sourcing device using voltage variations on the wire, the voltage variations maintaining voltage on the wire within the power-sourcing voltage range.
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公开(公告)号：US20160328337A1
公开(公告)日：2016-11-10
申请号：US14705631
申请日：2015-05-06
Applicant: NXP B.V.
Inventor： Chiahung Su , Madan Mohan Reddy Vemula
CPC classification number: G06F13/126 , G06F11/2247 , G06F11/3051 , G06F13/385
Abstract: One or more characteristics of devices are ascertained in accordance with one or more aspects of the disclosure. As may be consistent with one or more embodiments, the attachment of an external circuit to an input port is detected based on a resistance value presented by the external circuit. A resistance range that includes the resistance value presented at the input port is determined, in response to detecting the attachment, by dynamically coupling one or more of a plurality of resistor-based circuits relative to the input port. A signal presented by the external circuit on the input port is coded based on the determined resistance range, using one or more of the resistor-based circuits, and the code is used to identify a type of the external circuit. These aspects can provide for the communication of power and data with a variety of different types of external circuits.
Abstract translation: 根据本公开的一个或多个方面来确定装置的一个或多个特征。 可以与一个或多个实施例一致，基于由外部电路呈现的电阻值来检测外部电路到输入端口的附着。 响应于检测到附件，通过动态地耦合多个基于电阻器的电路中的一个或多个相对于输入端口来确定包括在输入端口处呈现的电阻值的电阻范围。 基于所确定的电阻范围，使用一个或多个基于电阻器的电路对由输入端口上的外部电路呈现的信号进行编码，并且该代码用于识别外部电路的类型。 这些方面可以提供电力和数据与各种不同类型的外部电路的通信。
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公开(公告)号：US10826290B2
公开(公告)日：2020-11-03
申请号：US15390037
申请日：2016-12-23
Applicant: NXP B.V.
Inventor： Gijs Jan de Raad , Madan Mohan Reddy Vemula
Abstract: Embodiments of an electrostatic discharge (ESD) protection device and a method of operating an ESD protection device are described. In one embodiment, the ESD protection circuit is connected between a VDD rail and a VSS rail and includes an internal floating ESD rail located between the VDD rail and the VSS rail, I/O pins connected between the internal floating ESD rail and the VSS rail, ESD diodes corresponding to at least one I/O pin, an internal bias cell corresponding to an I/O pin and configured to short the corresponding I/O pin to the internal floating ESD rail when the I/O pin is pulled high, and an internal bias cell corresponding to a VDD pin of the VDD rail and configured to short the VDD rail to the internal floating ESD rail when the VDD pin is pulled high.
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Patent Agency Ranking
公开(公告)号：US10811963B2
公开(公告)日：2020-10-20
申请号：US16172381
申请日：2018-10-26
Applicant: NXP B.V.
Inventor： Xiaoqun Liu , Madan Mohan Reddy Vemula
Abstract: A multi-stage charge pump circuit including a first stage of the multi-stage charge pump having a first voltage output, a last stage of the multi-stage charge pump having a first voltage input, and an inter-stage limitation circuit configured to protect a voltage drop of the first voltage output of the first stage of the multi-stage charge pump when there is a voltage drop on the first voltage input of the last stage of the multi-stage charge pump.
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公开(公告)号：US20200161986A1
公开(公告)日：2020-05-21
申请号：US16193199
申请日：2018-11-16
Applicant: NXP B.V.
Inventor： Xueyang Geng , Madan Mohan Reddy Vemula , Alma Anderson
IPC: H02M7/217
Abstract: A low voltage drop rectifier is provided. The rectifier includes a diode having a first terminal coupled at an input node and a second terminal coupled at an output node. A first transistor having a first current electrode is coupled at the input node and a second current electrode is coupled at the output node. A comparator having a first input is coupled at the input node, a second input is coupled at the output node, and an output is coupled to a control electrode of the first transistor. A bias circuit is coupled to the comparator circuit and is configured to generate a bias current in the comparator.
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公开(公告)号：US20180183233A1
公开(公告)日：2018-06-28
申请号：US15390037
申请日：2016-12-23
Applicant: NXP B.V.
Inventor： Gijs Jan de Raad , Madan Mohan Reddy Vemula
IPC: H02H9/04
Abstract: Embodiments of an electrostatic discharge (ESD) protection device and a method of operating an ESD protection device are described. In one embodiment, the ESD protection circuit is connected between a VDD rail and a VSS rail and includes an internal floating ESD rail located between the VDD rail and the VSS rail, I/O pins connected between the internal floating ESD rail and the VSS rail, ESD diodes corresponding to at least one I/O pin, an internal bias cell corresponding to an I/O pin and configured to short the corresponding I/O pin to the internal floating ESD rail when the I/O pin is pulled high, and an internal bias cell corresponding to a VDD pin of the VDD rail and configured to short the VDD rail to the internal floating ESD rail when the VDD pin is pulled high.
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公开(公告)号：US20160352323A1
公开(公告)日：2016-12-01
申请号：US14725366
申请日：2015-05-29
Applicant: NXP B.V.
Inventor： Madan Mohan Reddy Vemula , Harold Hanson
IPC: H03K17/16 , H03K17/687
CPC classification number: H03K19/0185 , G06F13/24 , G06F13/4068 , H03K2217/0054
Abstract: Aspects of the present disclosure are directed to detecting and powering external circuits via a common port. As may be implemented in accordance with one or more embodiments, an accessory detection circuit detects a type of an external circuit based upon a pull-down resistance at an interface port (e.g., where each accessory type provides a discernable pull-down resistance). Power switching circuitry couples power between the interface port and an internal power-based circuit, and operates in an open condition when the accessory detection circuit is active. An adaptive biasing circuit sets a voltage across the power switching circuitry to about zero, based on a voltage level provided on the interface port, thereby mitigating changes in the pull-down resistance due to current leakage. Once the type of external circuit is identified, the power switching circuity couples power between the external circuit and the internal circuit.
Abstract translation: 本公开的方面旨在通过公共端口检测和供电外部电路。 根据一个或多个实施例可以实现，附件检测电路基于接口端口处的下拉电阻（例如，每个附件类型提供可识别的下拉电阻）来检测外部电路的类型。 电源开关电路在接口端口和内部基于电源的电路之间连接电源，并在附件检测电路处于活动状态时工作在开启状态。 基于在接口端口上提供的电压电平，自适应偏置电路将功率开关电路两端的电压设置为约零，从而减轻由于电流泄漏引起的下拉电阻的变化。 一旦识别出外部电路的类型，电源开关电路将外部电路和内部电路之间的电力耦合起来。
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公开(公告)号：US09473130B2
公开(公告)日：2016-10-18
申请号：US14048689
申请日：2013-10-08
Applicant: NXP B.V.
Inventor： Chiahung Su , Madan Mohan Reddy Vemula
CPC classification number: H03K5/22 , G06F1/02 , H02J7/0052 , H03K4/08 , H03K4/94
Abstract: Various aspects of the disclosure are directed to methods and apparatuses involving providing a clock signal. As consistent with one or more embodiments herein, a sawtooth waveform signal is generated in a manner that facilitates low power operation. In some implementations, the sawtooth waveform signal is generated using an oscillator that operates without necessarily employing R-C circuits and/or without rail-to-rail voltage supply, such as via a nonlinear oscillator. The sawtooth waveform signal is used to generate a trapezoidal waveform signal, and a clock signal is generated using the trapeziodal waveform signal.
Abstract translation: 本公开的各个方面涉及涉及提供时钟信号的方法和装置。 与本文中的一个或多个实施例一致，以促进低功率操作的方式产生锯齿波形信号。 在一些实施方式中，锯齿波形信号是通过使用振荡器来产生的，所述振荡器例如通过非线性振荡器，不需要使用R-C电路和/或没有轨到轨电压供电。 锯齿波形信号用于产生梯形波形信号，并且使用梯形波形信号产生时钟信号。
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