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公开(公告)号：US20200177012A1
公开(公告)日：2020-06-04
申请号：US16237732
申请日：2019-01-01
Applicant: NXP B.V.
Inventor： XUECHU LI , Tinghua Yun , Fuchun Zhan
Abstract: In a wireless charging system having a power transmitter (TX) and a power receiver (RX), the RX has a rectifier that rectifies an AC power signal received wirelessly from the TX into a rectified DC power signal. The RX also has regulation modules that monitor the DC power signal at various different voltage regions having one or more different high-voltage regions and one or more different low-voltage regions. Each regulation module affects operations of the wireless charging system in a different way. The regulation modules protect the RX from both over-voltage and under-voltage conditions.
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公开(公告)号：US10985592B2
公开(公告)日：2021-04-20
申请号：US16237732
申请日：2019-01-01
Applicant: NXP B.V.
Inventor： Xuechu Li , Tinghua Yun , Fuchun Zhan
Abstract: In a wireless charging system having a power transmitter (TX) and a power receiver (RX), the RX has a rectifier that rectifies an AC power signal received wirelessly from the TX into a rectified DC power signal. The RX also has regulation modules that monitor the DC power signal at various different voltage regions having one or more different high-voltage regions and one or more different low-voltage regions. Each regulation module affects operations of the wireless charging system in a different way. The regulation modules protect the RX from both over-voltage and under-voltage conditions.
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公开(公告)号：US10284074B2
公开(公告)日：2019-05-07
申请号：US15706763
申请日：2017-09-18
Applicant: NXP B.V.
Inventor： Mingliang Wan , Tinghua Yun , Jian Qing , Peter Christiaans
IPC: H02M1/32 , H02H7/122 , H01L27/02 , H03K17/06 , H02H3/18 , H02H9/04 , H03K17/30 , H03K17/16 , H03K17/041 , H03K17/04
Abstract: A load switch includes a switch element and first and second control circuits. The switch element has an input terminal for receiving an input voltage, an output terminal for providing an output voltage, and a control terminal for receiving a switch signal, which turns the switch element on and off. The first control circuit is connected to the control terminal of the switch element and turns off the switch element in response to a first control signal. The second control circuit also is connected to the control terminal of the switch element and keeps the switch element turned off, after the first control circuit has turned off the switch element.
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公开(公告)号：US10168725B2
公开(公告)日：2019-01-01
申请号：US15679024
申请日：2017-08-16
Applicant: NXP B.V.
Inventor： Tinghua Yun , Xindong Duan , Mingliang Wan
Abstract: A current clamp circuit includes a current-source circuit, a current-sense circuit, and a feedback circuit. The current-sense circuit includes a transistor, a resistive network, and a multiplexer. The transistor outputs a sensed current signal having a current that is equal to a current of an output signal provided by the current-source circuit. The feedback circuit limits the current of the sensed current signal and the output signal below a threshold current. The multiplexer modifies a resistance of the resistive network based on a first control signal. The multiplexer circuit and the feedback circuit are programmed using the first control signal and a second control signal when the transistor operates in a linear region and in a saturation region, respectively, to accurately output the sensed current signal.
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公开(公告)号：US20180136685A1
公开(公告)日：2018-05-17
申请号：US15679024
申请日：2017-08-16
Applicant: NXP B.V.
Inventor： Tinghua Yun , Xindong Duan , Mingliang Wan
CPC classification number: G05F3/262 , G01R19/0092 , G01R27/02 , H02M3/1588
Abstract: A current clamp circuit includes a current-source circuit, a current-sense circuit, and a feedback circuit. The current-sense circuit includes a transistor, a resistive network, and a multiplexer. The transistor outputs a sensed current signal having a current that is equal to a current of an output signal provided by the current-source circuit. The feedback circuit limits the current of the sensed current signal and the output signal below a threshold current. The multiplexer modifies a resistance of the resistive network based on a first control signal. The multiplexer circuit and the feedback circuit are programmed using the first control signal and a second control signal when the transistor operates in a linear region and in a saturation region, respectively, to accurately output the sensed current signal.
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Patent Agency Ranking
公开(公告)号：US11165364B2
公开(公告)日：2021-11-02
申请号：US16283845
申请日：2019-02-25
Applicant: NXP B.V.
Inventor： Fuchun Zhan , Tinghua Yun , Jian Qing , Chao Chen , Li Zhang , Feng Cong
Abstract: A synchronous rectifier converts an AC input into a DC output. The synchronous rectifier has four switches controlled by four switch control modules. Each switch is connected between a different AC component and either the DC output or ground. Each switch control module has digitally assisted “switch on” circuitry that detects “on” bounces in the corresponding AC component to control when to turn on the corresponding switch and digitally assisted “switch off” circuitry that detects “off” bounces in the AC component to control when to turn off the corresponding switch. The “switch on” circuitry has a digitally assisted comparator to detect threshold crossings in the AC component, and the “switch off” circuitry has a digitally assisted programmable delay cell to turn off the switch for a predetermined duration following each detected threshold crossing.
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公开(公告)号：US10445268B2
公开(公告)日：2019-10-15
申请号：US15142228
申请日：2016-04-29
Applicant: NXP B.V.
Inventor： Jinxi Yan , Shuiwen Huang , Tinghua Yun
IPC: G06F13/362 , G06F13/42 , G06F13/16
Abstract: Methods for bidirectional communication and bidirectional communication buffers are described. In one embodiment, a method for bidirectional communication using first and second communication buses, which have opposite directions of data transmission, is described. The method for bidirectional communication involves detecting a signal from a first communication bus and buffering the detected signal and transmitting the buffered signal through a second communication bus while blocking data transmission from the second communication bus. Other embodiments are also described.
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公开(公告)号：US20190036444A1
公开(公告)日：2019-01-31
申请号：US15706763
申请日：2017-09-18
Applicant: NXP B.V.
Inventor： Mingliang Wan , Tinghua Yun , Jian Qing , Peter Christiaans
Abstract: A load switch includes a switch element and first and second control circuits. The switch element has an input terminal for receiving an input voltage, an output terminal for providing an output voltage, and a control terminal for receiving a switch signal, which turns the switch element on and off. The first control circuit is connected to the control terminal of the switch element and turns off the switch element in response to a first control signal. The second control circuit also is connected to the control terminal of the switch element and keeps the switch element turned off, after the first control circuit has turned off the switch element.
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公开(公告)号：US10013380B2
公开(公告)日：2018-07-03
申请号：US15079133
申请日：2016-03-24
Applicant: NXP B.V.
Inventor： Hongyun Zhang , Jian Qing , Tinghua Yun
IPC: G06F1/32 , G06F13/42 , G06F13/40 , G06F13/364
CPC classification number: G06F13/404 , G06F1/3203 , G06F1/3206 , G06F1/3215 , G06F1/3228 , G06F1/325 , G06F13/364 , G06F13/4291 , G06F2213/0016 , Y02D10/14 , Y02D10/151
Abstract: Embodiments of a method and system are disclosed. One embodiment of a method for address decoding in a data communications system using a serial data transfer bus is disclosed. The method involves, detecting a start command from a master device of the data communications system at the serial data transfer bus, and disabling an address decoder of a slave device of the data communications system in response to the detecting the start command.
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公开(公告)号：US20160335210A1
公开(公告)日：2016-11-17
申请号：US15142228
申请日：2016-04-29
Applicant: NXP B.V.
Inventor： Jinxi Yan , Shuiwen Huang , Tinghua Yun
IPC: G06F13/362 , G06F13/16 , G06F13/42
CPC classification number: G06F13/362 , G06F13/1673 , G06F13/4221
Abstract: Methods for bidirectional communication and bidirectional communication buffers are described. In one embodiment, a method for bidirectional communication using first and second communication buses, which have opposite directions of data transmission, is described. The method for bidirectional communication involves detecting a signal from a first communication bus and buffering the detected signal and transmitting the buffered signal through a second communication bus while blocking data transmission from the second communication bus. Other embodiments are also described.
Abstract translation: 描述了用于双向通信和双向通信缓冲器的方法。 在一个实施例中，描述了使用具有相反的数据传输方向的使用第一和第二通信总线的双向通信的方法。 用于双向通信的方法涉及检测来自第一通信总线的信号并缓冲检测到的信号，并且通过第二通信总线发送缓冲的信号，同时阻止来自第二通信总线的数据传输。 还描述了其它实施例。
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