公开(公告)号：US20160211675A1

公开(公告)日：2016-07-21

申请号：US14600926

申请日：2015-01-20

Applicant: NXP B.V.

Inventor： Michael Joehren ,  Robert Crosby

IPC: H02J7/00 ,  H02J7/02

CPC classification number: H02M3/1582 ,  H02J7/0065 ,  H02J7/0093

Abstract: Embodiments of methods for charging/discharging a battery and DC/DC converter devices for charging/discharging a battery are described. In one embodiment, a method for charging/discharging a battery involves conveying energy from a direct current (DC) power source to the battery through a DC/DC converter device and conveying energy from the battery to the DC power source through the DC/DC converter device. Other embodiments are also described.

Abstract translation: 描述了用于对电池充电/放电的方法和用于对电池充电/放电的DC / DC转换器装置的实施例。 在一个实施例中，一种用于对电池充电/放电的方法包括通过DC / DC转换器装置将能量从直流（DC）电源传送到电池，并通过DC / DC将能量从电池传送到DC电源 转换器装置。 还描述了其它实施例。

公开(公告)号：US09843198B2

公开(公告)日：2017-12-12

申请号：US14668700

申请日：2015-03-25

Applicant: NXP B.V.

Inventor： Michael Joehren

IPC: H02J17/00 ,  H02J5/00 ,  H02M7/23 ,  H02M1/00 ,  H02J50/10

CPC classification number: H02J5/005 ,  H02J17/00 ,  H02J50/10 ,  H02M7/23 ,  H02M2001/008

Abstract: Aspects of the present disclosure are directed to methods, apparatuses and systems involving voltage control using rectifying circuitry. According to an example embodiment, an apparatus includes an antenna, a capacitor, and voltage control circuitry. The voltage control circuitry includes a first rectifying circuit to rectify a wireless signal and provide the rectified signal to an output load, a second rectifying circuit to rectify the wireless signal and provide the rectified signal to the capacitor, and a control logic circuit to regulate an output voltage provided to the output load relative to a threshold value. For each rectifying cycle, the control logic circuit determines whether the output voltage is above the threshold value, enables, in response to determining that the output voltage is below the threshold value, the first rectifying circuit, and enables, in response to determining that the output voltage is above the threshold value, the second rectifying circuit.

公开(公告)号：US09661198B2

公开(公告)日：2017-05-23

申请号：US14615318

申请日：2015-02-05

Applicant: NXP B.V.

Inventor： Christophe Marc Macours ,  Shawn William Scarlett ,  Michael Joehren

IPC: H04N5/232 ,  H04N5/225 ,  H02P6/18 ,  H02P25/034

CPC classification number: H04N5/2253 ,  H02P6/183 ,  H02P25/034

Abstract: A voice coil motor displacement sensor and a voice coil motor controller that uses said sensor. The sensor configured to apply an alternating measurement signal at a predetermined frequency to a voice coil motor, the sensor configured to use a measure of a voltage across and a current through the voice coil motor to determine its impedance at the predetermined frequency and determine an estimated displacement of said voice coil motor using said impedance and a predetermined displacement-impedance function.

公开(公告)号：US20160111892A1

公开(公告)日：2016-04-21

申请号：US14871666

申请日：2015-09-30

Applicant: NXP B.V.

Inventor： Michael Joehren

IPC: H02J5/00 ,  H02H9/04

CPC classification number: H02J5/005 ,  H02H9/041 ,  H02M1/32

Abstract: A front-end circuit is disclosed for a resonant wireless power receiver, the circuit comprising: input terminals for connection to an antenna; a rectifier configured to rectify an AC signal having a peak input voltage received at the input terminals and to provide an output having an output voltage; an over-voltage detector configured to at least one of detect the output voltage exceeding a threshold voltage an overvoltage and detect the peak input voltage exceeding the threshold voltage; and an over-voltage controller configured to provide an electrical short-circuit across the input terminals in response to the respective output voltage or peak input voltage exceeding the threshold voltage. Integrated circuits, NFC devices and mobile device comprising such a front-end circuit are also disclosed, as is a method for controlling wireless charging.

Abstract translation: 公开了一种用于谐振无线电力接收器的前端电路，该电路包括：用于连接到天线的输入端子; 整流器，被配置为对具有在输入端子处接收的峰值输入电压的AC信号进行整流，并提供具有输出电压的输出; 过电压检测器，被配置为至少检测超过阈值电压的过压的输出电压，并检测超过阈值电压的峰值输入电压; 以及过电压控制器，其被配置为响应于相应的输出电压或峰值输入电压超过阈值电压而在输入端子之间提供电短路。 还公开了包括这种前端电路的集成电路，NFC设备和移动设备，以及用于控制无线充电的方法。

公开(公告)号：US20150229814A1

公开(公告)日：2015-08-13

申请号：US14615318

申请日：2015-02-05

Applicant: NXP B.V.

Inventor： Christophe Marc Macours ,  Shawn William Scarlett ,  Michael Joehren

IPC: H04N5/225

CPC classification number: H04N5/2253 ,  H02P6/183 ,  H02P25/034

Abstract: A voice coil motor displacement sensor and a voice coil motor controller that uses said sensor. The sensor configured to apply an alternating measurement signal at a predetermined frequency to a voice coil motor, the sensor configured to use a measure of a voltage across and a current through the voice coil motor to determine its impedance at the predetermined frequency and determine an estimated displacement of said voice coil motor using said impedance and a predetermined displacement-impedance function.

Abstract translation: 音圈电机位移传感器和使用该传感器的音圈电机控制器。 所述传感器被配置为将预定频率的交替测量信号施加到音圈电动机，所述传感器被配置为使用跨过音频电流的测量和通过音圈电动机的电流来确定其在预定频率处的阻抗，并且确定估计 所述音圈电动机使用所述阻抗和预定位移阻抗功能的位移。

公开(公告)号：US09641364B2

公开(公告)日：2017-05-02

申请号：US14292199

申请日：2014-05-30

Applicant: NXP B.V.

Inventor： Michael Joehren

IPC: H04B5/00 ,  H04L27/06 ,  H04W4/00 ,  H04B1/401

CPC classification number: H04L27/06 ,  H04B1/401 ,  H04B5/0025 ,  H04B5/0075 ,  H04W4/80

Abstract: Various aspects of the present disclosure involve communications, and more specifically wireless communications with modulation. As may be implemented in accordance with one or more embodiments, a rectifier having a plurality of active circuits operates in first and second modes to modulate signals communicated via an antenna as follows. The first mode is at least a half-active mode in which at least one of the active circuits passes the signal, and the second mode consumes less power than the first mode. A modulator modulates a waveform of the signal by selectively operating at least one of the plurality of active circuits, therein setting an impedance of the rectifier and modulating an amplitude of the signal.

公开(公告)号：US20160285277A1

公开(公告)日：2016-09-29

申请号：US14668700

申请日：2015-03-25

Applicant: NXP B.V.

Inventor： Michael Joehren

IPC: H02J5/00 ,  H02J17/00

CPC classification number: H02J5/005 ,  H02J17/00 ,  H02J50/10 ,  H02M7/23 ,  H02M2001/008

Abstract: Aspects of the present disclosure are directed to methods, apparatuses and systems involving voltage control using rectifying circuitry. According to an example embodiment, an apparatus includes an antenna, a capacitor, and voltage control circuitry. The voltage control circuitry includes a first rectifying circuit to rectify a wireless signal and provide the rectified signal to an output load, a second rectifying circuit to rectify the wireless signal and provide the rectified signal to the capacitor, and a control logic circuit to regulate an output voltage provided to the output load relative to a threshold value. For each rectifying cycle, the control logic circuit determines whether the output voltage is above the threshold value, enables, in response to determining that the output voltage is below the threshold value, the first rectifying circuit, and enables, in response to determining that the output voltage is above the threshold value, the second rectifying circuit.

Abstract translation: 本公开的方面涉及使用整流电路的涉及电压控制的方法，装置和系统。 根据示例实施例，一种装置包括天线，电容器和电压控制电路。 电压控制电路包括：第一整流电路，用于对无线信号进行整流，并将整流信号提供给输出负载;第二整流电路，对整流无线信号进行整流，并向电容器提供整流信号;以及控制逻辑电路， 输出电压相对于阈值提供给输出负载。 对于每个整流周期，控制逻辑电路确定输出电压是否高于阈值，响应于确定输出电压低于阈值，启用第一整流电路，并且能够响应于确定 输出电压高于阈值，第二整流电路。

公开(公告)号：US10181852B1

公开(公告)日：2019-01-15

申请号：US16011661

申请日：2018-06-19

Applicant: NXP B.V.

Inventor： Chandra Prakash Tiwari ,  Michael Joehren

IPC: H03K19/00 ,  H03K19/003 ,  H03K3/356

Abstract: A bidirectional voltage translator shifts a voltage level of a first voltage signal to generate a second voltage signal, and vice-versa. The voltage translator includes first and second I/O terminals for receiving and outputting the first and second voltage signals, respectively, and first and second one-shot circuits connected to first and second output transistors, respectively. The outputs of the transistors are connected to the first and second I/O terminals, respectively, and also are fed back to the respective one-shot circuits. When the output of the voltage translator has a high slew-rate, the one of the first and second one-shot circuits that corresponds to the output modulates the gate voltage of the corresponding output transistor based on the feedback signal to control the slew-rate of the output.

公开(公告)号：US09473110B2

公开(公告)日：2016-10-18

申请号：US14059831

申请日：2013-10-22

Applicant: NXP B.V.

Inventor： Michael Joehren

IPC: H03J5/24 ,  H03J3/20 ,  H02J17/00 ,  H02J7/02

CPC classification number: H03J5/244 ,  H02J7/025 ,  H02J50/12 ,  H03J3/20 ,  H03J2200/06

Abstract: An antenna control circuit including: an H-bridge circuit including three half-bridge circuits; and a controller configured to control the H-bridge circuit; wherein a first half-bridge circuit and a second half-bridge circuit of the three half-bridge circuits are configured to electrically connect across a resonant antenna with a first resonant frequency and a second resonant frequency; wherein a third half-bridge circuit is configured to electrically connect to a first capacitance connected to the resonant antenna, wherein the controller is configured to control the third half-bridge circuit to switch the connection of the first capacitance to the resonant antenna to a first position that changes the resonant frequency of the resonant antenna to the first resonant frequency.

Abstract translation: 一种天线控制电路，包括：H桥电路，包括三个半桥电路; 以及控制器，被配置为控制所述H桥电路; 其中所述三个半桥电路的第一半桥电路和第二半桥电路被配置为跨谐振天线与第一谐振频率和第二谐振频率电连接; 其中第三半桥电路被配置为电连接到连接到所述谐振天线的第一电容，其中所述控制器被配置为控制所述第三半桥电路将所述第一电容与所述谐振天线的连接切换到第一 将谐振天线的谐振频率改变到第一谐振频率的位置。

公开(公告)号：US09077390B1

公开(公告)日：2015-07-07

申请号：US14133250

申请日：2013-12-18

Applicant: NXP B.V.

Inventor： Michael Joehren

IPC: H02J7/00 ,  H04B5/00 ,  H01M10/46

CPC classification number: H04B5/0037 ,  H02J5/005 ,  H02J7/025 ,  H02J9/005 ,  H02J50/10 ,  H04B5/0031 ,  H04B5/0075

Abstract: Wireless power and data transfer can be implemented for powering and communicating with a variety of devices, in a manner that facilitates device access under such wireless power conditions. As consistent with one or more embodiments, wireless power and data are communicated in an apparatus such as a mobile device having a power circuit (e.g., a battery) that powers a processor under normal operating conditions, and that also operates in a low-power state (e.g., in which the processor is not operating and/or not operating using the power circuit). Power is generated using wireless power signals and used to power the power circuit and to both extract and store data from wireless data signals. With this approach, data can be transferred in a low-power state, and the processor can use the stored data upon transitioning to an on state in which the processor is active and powered by the power circuit/battery.

Abstract translation: 可以实现无线电力和数据传输以为各种设备供电和通信，以便于在这种无线电力条件下的设备接入。 与一个或多个实施例一致，无线电力和数据在诸如具有在正常操作条件下为处理器供电的电源电路（例如，电池）的移动设备的设备中传送，并且还以低功率运行 状态（例如，处理器不工作和/或不使用电源电路运行）。 使用无线电力信号产生电力，并用于为电源电路供电，并从无线数据信号中提取和存储数据。 利用这种方法，可以以低功率状态传输数据，并且处理器可以在转换到处理器处于活动状态并由电源电路/电池供电的接通状态时使用所存储的数据。