公开(公告)号：US10778034B2

公开(公告)日：2020-09-15

申请号：US16207848

申请日：2018-12-03

Applicant: Texas Instruments Incorporated

Inventor： Ashish Khandelwal ,  Joseph M. Khayat ,  Yipeng Su ,  Robert A. Neidorff ,  Bharath B. Kannan

IPC: H03K5/1532 ,  H02J50/10 ,  H03K19/20 ,  H02J50/80 ,  H03K5/1536 ,  H03K5/24 ,  H04B5/00 ,  H04B5/02 ,  H03K5/00

Abstract: A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.

公开(公告)号：US10141845B2

公开(公告)日：2018-11-27

申请号：US15366264

申请日：2016-12-01

Applicant: Texas Instruments Incorporated

Inventor： Saurav Bandyopadhyay ,  Robert A. Neidorff

IPC: H02M1/42 ,  H02M3/335 ,  G05F1/10 ,  H02M7/48 ,  H02M3/158 ,  H03K17/284

Abstract: Disclosed examples provide DC-DC converters and control circuits to provide high and low-side driver signals and to selectively adjust a delay time between a low-side switching device turning off and a high-side switching device turning on according to a comparator signal, including a clocked comparator circuit referenced to a switching node to sample the voltage across the high-side switching device in response to a first edge of the high-side driver signal, and to generate the comparator signal indicating a polarity of the sampled high-side switch voltage to facilitate zero voltage switching of the high-side switching device.

公开(公告)号：US20170363662A1

公开(公告)日：2017-12-21

申请号：US15188578

申请日：2016-06-21

Applicant: Texas Instruments Incorporated

Inventor： Robert A. Neidorff

IPC: G01R19/00 ,  H03K17/687

CPC classification number: G01R19/0092 ,  G01R19/16519 ,  G01R27/08 ,  H03K17/122 ,  H03K17/687

Abstract: Transistor arrays are disclosed herein. An example transistor array includes a first node for coupling the transistor array to a circuit. A first transistor and a second transistor are coupled to the first node. A gate controller is coupled to the gate of the first transistor and the gate of the second transistor and is for selectively turning on the first transistor and the second transistor. A current source is coupled to the first node and is active when the second transistor is off. Calibration circuitry measures the voltage of the first node when the current source is active.

公开(公告)号：US09838084B2

公开(公告)日：2017-12-05

申请号：US14502285

申请日：2014-09-30

Applicant: Texas Instruments Incorporated

Inventor： Ashish Khandelwal ,  Robert A. Neidorff

IPC: H03L7/10 ,  H04B5/00 ,  H01F38/14

CPC classification number: H04B5/0037 ,  H01F38/14 ,  H02J50/10 ,  H02J50/80 ,  H04L27/10

Abstract: A transmitter circuit in a wireless power transmission system has a tank circuit, having an inductor and a capacitor, the inductor being couplable to the inductor of a receiver circuit. An oscillator generates an oscillation frequency signal for driving the tank circuit. A first digital-to-analog converter (DAC) provides a first control signal to control the oscillating frequency of the oscillator. A frequency shift keying (FSK) circuit changes a digital signal input to the digital-to-analog converter for shifting the oscillation frequency utilized to drive the tank circuit, the FSK signal transmitting data or commands to the receiver circuit. A method of transmitting FSK signals in a wireless power transmission system is also disclosed.

公开(公告)号：US20170302178A1

公开(公告)日：2017-10-19

申请号：US15366264

申请日：2016-12-01

Applicant: Texas Instruments Incorporated

Inventor： Saurav Bandyopadhyay ,  Robert A. Neidorff

IPC: H02M3/158 ,  H03K17/284

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M1/38 ,  H02M3/1588 ,  H02M2001/0058 ,  H03K17/133 ,  H03K17/284 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: Disclosed examples provide DC-DC converters and control circuits to provide high and low-side driver signals and to selectively adjust a delay time between a low-side switching device turning off and a high-side switching device turning on according to a comparator signal, including a clocked comparator circuit referenced to a switching node to sample the voltage across the high-side switching device in response to a first edge of the high-side driver signal, and to generate the comparator signal indicating a polarity of the sampled high-side switch voltage to facilitate zero voltage switching of the high-side switching device.

公开(公告)号：US20160094278A1

公开(公告)日：2016-03-31

申请号：US14502285

申请日：2014-09-30

Applicant: Texas Instruments Incorporated

Inventor： Ashish Khandelwal ,  Robert A. Neidorff

IPC: H04B5/00 ,  H01F38/14

CPC classification number: H04B5/0037 ,  H01F38/14 ,  H02J50/10 ,  H02J50/80 ,  H04L27/10

Abstract: A transmitter circuit in a wireless power transmission system has a tank circuit, having an inductor and a capacitor, the inductor being couplable to the inductor of a receiver circuit. An oscillator generates an oscillation frequency signal for driving the tank circuit. A first digital-to-analog converter (DAC) provides a first control signal to control the oscillating frequency of the oscillator. A frequency shift keying (FSK) circuit changes a digital signal input to the digital-to-analog converter for shifting the oscillation frequency utilized to drive the tank circuit, the FSK signal transmitting data or commands to the receiver circuit. A method of transmitting FSK signals in a wireless power transmission system is also disclosed.

Abstract translation: 无线电力传输系统中的发射机电路具有具有电感器和电容器的振荡电路，所述电感器可耦合到接收器电路的电感器。 振荡器产生振荡频率信号以驱动储能电路。 第一个数模转换器（DAC）提供第一控制信号来控制振荡器的振荡频率。 频移键控（FSK）电路将数字信号输入改变为数模转换器，用于移位用于驱动音箱电路的振荡频率，FSK信号将数据或命令发送到接收器电路。 还公开了一种在无线电力传输系统中发送FSK信号的方法。

公开(公告)号：US20150171935A1

公开(公告)日：2015-06-18

申请号：US14502048

申请日：2014-09-30

Applicant: Texas Instruments Incorporated

Inventor： Ashish Khandelwal ,  Joseph M. Khayat ,  Yipeng Su ,  Robert A. Neidorff ,  Bharath B. Kannan

IPC: H04B5/00

CPC classification number: H02J50/10 ,  H02J5/005 ,  H02J7/025 ,  H02J50/80 ,  H03K5/1532 ,  H03K5/1536 ,  H03K5/24 ,  H03K19/20 ,  H03K2005/00078 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0093 ,  H04B5/02

Abstract: A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.

Abstract translation: 电感耦合到次级侧无线电力接收器的初级侧无线电力发射机用于向无线电力接收器供电以通过电感耦合从次级侧无线电力接收器接收通信包括初级侧电路接收来自次级侧的信号 侧无线电源接收器。 相位延迟或时间延迟电路产生固定的延迟时钟信号。 采样和保持电路利用固定相位或时间延迟的时钟信号对储能电路电压进行采样。 比较器耦合到采样和保持电路的输出端，用于从信号流中提取数据或命令。 还公开了一种操作初级侧无线发射机的方法，所述初级侧无线发射机感应耦合到次级侧无线电力接收机，用于向无线电力接收机供电以为耦合到接收机的负载供电。