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1. 发明授权

US09225323B1 Signal crossing detection 有权
标题翻译：信号交叉检测
公开(公告)号：US09225323B1
公开(公告)日：2015-12-29
申请号：US14309329
申请日：2014-06-19
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H05B37/02 , H03K5/1536 , H02M3/158 , H05B33/08
CPC分类号： H03K5/1536 , G01R19/175 , H02M3/1588 , H02M2001/0009 , H05B33/0815 , Y02B70/1466
摘要： Various aspects of the present disclosure are directed to detecting crossings such as zero crossings that can pose problems to circuit operation. In accordance with an example embodiment, two or more circuits are implemented for detecting signal crossings of an electrical signal during respective time cycles, such that at least one of the circuits is operating to detect such a crossing at all times. Each circuit undergoes a reset condition, which is controlled to ensure that at least one circuit remains operating for detecting zero crossing.
摘要翻译：本公开的各个方面涉及检测可能对电路操作造成问题的过路点，例如过零点。根据示例性实施例，实现了两个或多个电路，用于在各个时间周期期间检测电信号的信号交叉，使得至少一个电路正在操作以始终检测这样的交叉。每个电路经历复位条件，其被控制以确保至少一个电路保持工作以检测过零点。

2. 发明申请

US20170288397A1 ELECTROSTATIC DISCHARGE PROTECTION 审中-公开
公开(公告)号：US20170288397A1
公开(公告)日：2017-10-05
申请号：US15083699
申请日：2016-03-29
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H02H9/04
CPC分类号： H02H9/046 , H01L27/0266 , H02H11/006
摘要： Circuits and methods concerning voltage surge protection are disclosed. In an example embodiment, an apparatus includes a switching circuit configured to enable a current path between a first node and a second node in a first mode and disable the current path in a second mode. A biasing circuit configured to, in the surge protection mode, prevent a voltage surge at the first node from enabling the current path to the second node by biasing a voltage of the control node.

3. 发明授权

US09622303B1 Current mirror and constant-current LED driver system for constant-current LED driver IC device 有权
公开(公告)号：US09622303B1
公开(公告)日：2017-04-11
申请号：US14861385
申请日：2015-09-22
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H03K5/151 , H03K5/24 , G06F1/06 , H05B33/08
CPC分类号： H05B33/0827
摘要： Embodiments of a current mirror for a constant-current light-emitting diode (LED) driver system and a constant-current LED driver integrated circuit (IC) device having the current mirror are described. In one embodiment, a current mirror includes at least one current mirror cell. Each of the at least one current mirror cell includes semiconductor circuits configured to generate an output current based on a reference current and a control module configured to alternately and continuously charge the semiconductor circuits in response to non-overlapping clock signals.

4. 发明申请

US20170086268A1 CURRENT MIRROR AND CONSTANT-CURRENT LED DRIVER SYSTEM FOR CONSTANT-CURRENT LED DRIVER IC DEVICE 有权
公开(公告)号：US20170086268A1
公开(公告)日：2017-03-23
申请号：US14861385
申请日：2015-09-22
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H05B33/08
CPC分类号： H05B33/0827
摘要： Embodiments of a current mirror for a constant-current light-emitting diode (LED) driver system and a constant-current LED driver integrated circuit (IC) device having the current mirror are described. In one embodiment, a current mirror includes at least one current mirror cell. Each of the at least one current mirror cell includes semiconductor circuits configured to generate an output current based on a reference current and a control module configured to alternately and continuously charge the semiconductor circuits in response to non-overlapping clock signals.

5. 发明授权

US09526137B1 Low-noise current regulation circuits 有权
标题翻译：低噪声电流调节电路
公开(公告)号：US09526137B1
公开(公告)日：2016-12-20
申请号：US14754057
申请日：2015-06-29
申请人： NXP B.V.
发明人： Ge Wang , Ling Su
IPC分类号： H05B33/08 , H02M3/04
CPC分类号： H05B33/0818 , H02M3/04 , H05B33/0815 , H05B33/0824 , Y02B20/347
摘要： Apparatuses and methods concerning regulation of load currents are disclosed. As an example, one apparatus includes a first clock generation circuit configured to generate a first clock signal with a frequency spectrum having a first frequency range. A second clock generation circuit is configured to produce a second clock signal by spreading the frequency spectrum of the first clock signal to have a second frequency range that is wider than the first frequency range. The second clock signal has a frequency spectrum extending outside of the frequency range. The apparatus includes a third circuit configured to regulate a voltage at a supply node as a function of the second clock signal. A current regulation circuit is configured to regulate current in a circuit path, from the supply node and passing through a load circuit coupled to the current regulator, as a function of the first clock signal.
摘要翻译：公开了关于负载电流调节的装置和方法。作为示例，一个装置包括被配置为产生具有第一频率范围的频谱的第一时钟信号的第一时钟生成电路。第二时钟生成电路被配置为通过将第一时钟信号的频谱扩展为具有比第一频率范围宽的第二频率范围来产生第二时钟信号。第二时钟信号具有延伸到频率范围之外的频谱。该装置包括被配置为根据第二时钟信号调节供电节点处的电压的第三电路。电流调节电路被配置为根据第一时钟信号调节来自电源节点的电路路径中的电流并且通过耦合到电流调节器的负载电路。

6. 发明申请

US20150318782A1 CAPACITANCE MULTIPLIER AND METHOD 有权
标题翻译：电容乘法器和方法
公开(公告)号：US20150318782A1
公开(公告)日：2015-11-05
申请号：US14268929
申请日：2014-05-02
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H02M3/07
CPC分类号： H03H11/483 , H02M3/07
摘要： Capacitance multiplier circuitry provides an increased equivalent capacitance, and may be implemented using a desirably small footprint. As may be implemented in accordance with one or more embodiments, a capacitor provides a first capacitance across first and second plates, and capacitance multiplier circuitry operates with the capacitor to provide a second equivalent capacitance that is a multiple of the first capacitance. The capacitance multiplier circuitry includes a first circuit path having a first resistor between the first plate and a common terminal, and a second circuit path having a switch and a second resistor between the second plate and the common terminal. An amplifier has differential inputs respectively corresponding to the first and second circuit paths and provides the second equivalent capacitance by controlling operation of the switch based upon the differential inputs and the respective resistances provided by the resistors in the first and second circuit paths.
摘要翻译：电容乘法器电路提供增加的等效电容，并且可以使用期望的小占位面积来实现。如可以根据一个或多个实施例来实现的，电容器提供跨越第一和第二板的第一电容，并且电容倍增器电路与电容器一起工作以提供作为第一电容的倍数的第二等效电容。电容倍增器电路包括在第一板和公共端之间具有第一电阻器的第一电路，以及在第二板和公共端之间具有开关和第二电阻的第二电路。放大器具有分别对应于第一和第二电路路径的差分输入，并且通过基于差分输入和由第一和第二电路路径中的电阻器提供的各个电阻来控制开关的操作来提供第二等效电容。

7. 发明授权

US10250118B1 PWM mode boost switching regulator with programmable pulse skip mode 有权
公开(公告)号：US10250118B1
公开(公告)日：2019-04-02
申请号：US15954520
申请日：2018-04-16
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H02M3/156 , H02M1/08 , H02M1/00
摘要： A power supply is disclosed. The power supply includes a switch to regulate an input voltage and a current sense transistor to sense current through the switch. The power supply further includes a switching control to control a switching frequency of the switch. A programmable pulse skip circuit coupled to the switching control is also included. The switching control is configured to alter the switching frequency based on a pulse skip control signal received from the programmable pulse skip circuit. The programmable pulse skip circuit produces the pulse skip control signal based on an external control signal inputted to the programmable pulse skip circuit and the sensed current by the current sense transistor.

8. 发明授权

US10164527B2 Closed-loop boost drivers with responsive switching control 有权
公开(公告)号：US10164527B2
公开(公告)日：2018-12-25
申请号：US14106043
申请日：2013-12-13
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H02M3/156 , H02M3/158 , H05B33/08
摘要： Various aspects of the present disclosure are directed toward apparatuses, methods, and systems for presenting boosted power regulation to a load. These aspects include a power-switching circuit that selectively passes current in response to a boost-converter control circuit. A current-control circuit selectively powers the load in response to the power-switching circuit passing current.

9. 发明授权

US10020676B2 Watchdog circuit 有权
公开(公告)号：US10020676B2
公开(公告)日：2018-07-10
申请号：US15082025
申请日：2016-03-28
申请人： NXP B.V.
发明人： Ge Wang , Harold Garth Hanson
IPC分类号： H02J7/00 , H02J9/00 , H02J9/06 , G06F11/07 , G06F1/24
CPC分类号： H02J9/061 , G06F1/24 , G06F11/0736 , G06F11/0745 , G06F11/0757 , G06F11/0793
摘要： One example discloses a watchdog circuit: wherein the watchdog circuit is configured to receive a primary ground from a primary power supply, and a backup ground from a backup power supply; wherein the watchdog circuit includes a ground switch coupled to the primary ground and the backup ground; and wherein the ground switch is configured to isolate the primary ground from the backup ground in response to a fault signal.

10. 发明申请

US20170086269A1 AMPLIFIER FOR A CONSTANT-CURRENT LED DRIVER CIRCUIT AND CONSTANT-CURRENT LED DRIVER IC DEVICE 有权
公开(公告)号：US20170086269A1
公开(公告)日：2017-03-23
申请号：US14970392
申请日：2015-12-15
申请人： NXP B.V.
发明人： Ge Wang
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/0851 , H05B33/086
摘要： Embodiments of an amplifier for a constant-current light-emitting diode (LED) driver circuit and a constant-current LED driver integrated circuit (IC) device having the amplifier are described. In one embodiment, an amplifier includes a folded cascode input stage including chopping switch circuits configured to perform frequency chopping to reduce an input offset of the amplifier and a rail-to-rail output stage connected to the folded cascode input stage. The rail-to-rail output stage includes slew rate enhancement circuits.

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