公开(公告)号：US20200327937A1

公开(公告)日：2020-10-15

申请号：US16405895

申请日：2019-05-07

Applicant: Microchip Technology Inc.

Inventor： Victor Nguyen ,  Fethi Dhaoui ,  John L. McCollum ,  Fengliang Xue

IPC: G11C13/00 ,  H01L45/00

Abstract: A ReRAM memory cell includes a ReRAM device including a solid electrolyte layer disposed between a first ion-source electrode and a second electrode and a select circuit including two series-connected select transistors connected in series with the ReRAM device, each of the two series-connected select transistors having a gate connected to a separate control line.

公开(公告)号：US09730280B2

公开(公告)日：2017-08-08

申请号：US15277566

申请日：2016-09-27

Applicant: Microchip Technology Incorporated

Inventor： Scott Lynch

IPC: H05B37/00 ,  H05B33/08 ,  H02M1/14

CPC classification number: H05B33/0812 ,  H02M1/14 ,  H05B33/083

Abstract: A ripple reduction circuit is provided. The ripple reduction circuit may include a ripple capacitor configured to drive at least a first segment of a string of light emitting diodes (LEDs), a first diode having an anode coupled to the ripple capacitor, and a cathode configured to be coupled to an input end of the first LED segment, a second diode having a cathode coupled to the ripple capacitor and the anode of the first diode, and an anode configured to be coupled between the first LED segment and a second LED segment of the string of LEDs, a third diode having an anode coupled to the ripple capacitor, and a cathode configured to be coupled to a last LED segment of the string of LEDs, and a fourth diode having a cathode coupled to the ripple capacitor and the anode of the third diode.

公开(公告)号：US09621149B2

公开(公告)日：2017-04-11

申请号：US14817107

申请日：2015-08-03

Applicant: Microchip Technology Inc.

Inventor： Benedict C. K. Choy ,  James T. Walker ,  Ming-Yuan Yeh

IPC: H03K17/16 ,  H03K17/06

CPC classification number: H03K17/063 ,  H03K17/163

Abstract: Systems and methods are disclosed for operating a highly linearized resistance for a switch through use of a bootstrapped features. In one exemplary implementation, there is provided a method and system that implements a method for operating a circuit configured to provide a highly linearized resistance including receiving a signal via a bootstrapped switch, coupling the received signal to a gate if the received signal is high, receiving a signal via a switch control input coupled to a high impedance element. Moreover, the method includes coupling the high impedance element to the gate and turning off the switch via a gate turn off when the gate turn off pulls the gate low.

公开(公告)号：US09621021B2

公开(公告)日：2017-04-11

申请号：US13924302

申请日：2013-06-21

Applicant: Supertex, Inc.

Inventor： Marc Tan ,  Alexander Mednik ,  Simon Krugly ,  Wilson Wai-Sum Chan

IPC: H02M1/08 ,  H02M3/158 ,  H02M1/00 ,  H02M1/36

CPC classification number: H02M1/08 ,  H02M1/36 ,  H02M3/158 ,  H02M2001/0006 ,  H02M2001/0045

Abstract: The invention relates to the control of auxiliary power supply connected in parallel with a switch of a switching regulator. A switch and a diode are included within the connection to the auxiliary supply. The auxiliary supply switch enables a flow of current to the auxiliary supply when the auxiliary supply switch is on and the switch in parallel is off. The auxiliary diode prevents a reverse flow of current when the switch in parallel is on. The auxiliary power supply is suitable to supply of current in both stages of switching regulator operation, to configurations with a common node carrying either type of potential, steady or switching, provides supply of current at high efficiency in the switching stage of switching regulator operation, and provides high efficiency over a wide range of operating conditions of the switching regulator.

公开(公告)号：US09474118B2

公开(公告)日：2016-10-18

申请号：US14549433

申请日：2014-11-20

Applicant: Microchip Technology Inc.

Inventor： Alexander Mednik

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346

Abstract: The invention comprises a dimming switch for use with a string of light emitting diodes (LEDs). The dimming switch comprises a bipolar junction transistor (BJT) driven in a cascode scheme. The dimming switch also comprises circuitry to offset the current that drives the base of the BJT to provide a controlled amount of current to the LEDs when the dimming input signal is high.

Abstract translation: 本发明包括用于一串发光二极管（LED）的调光开关。 调光开关包括以共源共享方案驱动的双极结型晶体管（BJT）。 调光开关还包括用于抵消驱动BJT的基极的电流的电路，以在调光输入信号为高时向LED提供受控量的电流。

公开(公告)号：US09265103B2

公开(公告)日：2016-02-16

申请号：US14680010

申请日：2015-04-06

Applicant: Microchip Technology Inc.

Inventor： Scott Lynch ,  Benedict C. K. Choy

IPC: H05B33/08

CPC classification number: H05B33/0812 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/083 ,  H05B33/0845 ,  Y02B20/347

Abstract: An LED driver circuit for controlling direct current supplied to a plurality of serially connected segments of Light Emitting Diodes (LEDs) is disclosed. In one embodiment, the LED driver circuit comprises a self-commutating circuit, which comprises a plurality of current control elements, each current control element having two ends, a first end connected to a different end of each segment along the plurality of serially connected segments of LEDs and a second end connected to a path to ground. The path to ground comprises a sense resistor and the path to ground is shared by the second end of each current control element. Each current control element is coupled to an adjacent current control element by a cross-regulation circuit and controlled by a signal from an adjacent current control element.

公开(公告)号：US20150145425A1

公开(公告)日：2015-05-28

申请号：US14549433

申请日：2014-11-20

Applicant: Microchip Technology Inc.

Inventor： Alexander Mednik

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346

Abstract: The invention comprises a dimming switch for use with a string of light emitting diodes (LEDs). The dimming switch comprises a bipolar junction transistor (BJT) driven in a cascode scheme. The dimming switch also comprises circuitry to offset the current that drives the base of the BJT to provide a controlled amount of current to the LEDs when the dimming input signal is high.

Abstract translation: 本发明包括用于一串发光二极管（LED）的调光开关。 调光开关包括以共源共享方案驱动的双极结型晶体管（BJT）。 调光开关还包括用于抵消驱动BJT的基极的电流的电路，以在调光输入信号为高时向LED提供受控量的电流。

公开(公告)号：US07126515B1

公开(公告)日：2006-10-24

申请号：US11236371

申请日：2005-09-27

Applicant: Bryan Kris

Inventor： Bryan Kris

IPC: H03M1/00

CPC classification number: H03M1/1225 ,  H03M1/1215

Abstract: An analog-to-digital conversion apparatus for converting a plurality of analog input signals may include a plurality of analog input, a plurality of sample and hold circuits, one or more analog-to-digital converters (ADCs), a plurality of trigger selection circuits, and one or more analog multiplexers. The analog inputs may receive an analog input signals. The sample and hold circuits may include an input selectively coupled to at least one of the plurality of input and an output. The analog-to-digital converters (ADCs) may include an input and an output. The trigger selection circuits may selectively couple one of the inputs to one of the sample and hold circuits. The analog multiplexers may include a plurality of inputs selectively coupled to one or more of the sample and hold circuit outputs and an output coupled to one of the one or more analog-to-digital-converters.

Abstract translation: 用于转换多个模拟输入信号的模拟 - 数字转换装置可以包括多个模拟输入，多个采样和保持电路，一个或多个模数转换器（ADC），多个触发选择 电路和一个或多个模拟多路复用器。 模拟输入可以接收模拟输入信号。 采样和保持电路可以包括选择性地耦合到多个输入和输出中的至少一个的输入。 模数转换器（ADC）可以包括输入和输出。 触发选择电路可以选择性地将输入中的一个耦合到采样和保持电路之一。 模拟多路复用器可以包括选择性地耦合到一个或多个采样和保持电路输出的多个输入和耦合到一个或多个模数转换器之一的输出。

公开(公告)号：US20040140884A1

公开(公告)日：2004-07-22

申请号：US10754259

申请日：2004-01-09

Applicant: Microchip Technology Inc.

Inventor： William F. Gallagher III ,  Ronald Salesky ,  Shinichiro Inui ,  Riccardo Benedetti ,  Samuel Alexander ,  Lee R. Furey ,  Youbok Lee

IPC: H04Q005/22

CPC classification number: G06K7/10039 ,  G06K7/0008

Abstract: Arbitration of multiple transponders, such as RFID tags, occurs in an interrogation field. The arbitration process is custom-tailored for individual applications, under software control, by the transponder reader or tag reader. Different wake-up slots are calculated for each tag during successive transmission cycles based upon the tag ID and the transmission cycle number. The tag reader may also send a special command to a tag to read its data and cause the tag to become decoupled from the environment. The tags may be selectively placed in either a tag-talk-first mode or a reader-talk-first mode. Furthermore, the tag reader may send a special fast read command to the tag which includes a read request and at least one parameter of the read request.

Abstract translation: 多个转发器（如RFID标签）的仲裁发生在询问领域。 仲裁过程是由应答程序读取器或标签读取器在软件控制下针对各个应用程序进行定制的。 基于标签ID和传输周期数，在连续传输周期期间针对每个标签计算不同的唤醒时隙。 标签读取器还可以向标签发送特殊命令以读取其数据并使标签与环境分离。 标签可以选择性地放置在标签通话第一模式或读取器通话第一模式中。 此外，标签读取器可以向包括读取请求和读取请求的至少一个参数的标签发送特殊的快速读取命令。

公开(公告)号：US6049289A

公开(公告)日：2000-04-11

申请号：US706682

申请日：1996-09-06

Applicant: Dennis W. Waggamon ,  Willem J. Marneweck ,  Vivien N. Delport ,  Frederick J. Bruwer

Inventor： Dennis W. Waggamon ,  Willem J. Marneweck ,  Vivien N. Delport ,  Frederick J. Bruwer

IPC: E05B49/00 ,  G07C9/00 ,  G08C17/02 ,  G08C19/28 ,  H04B1/69 ,  H04J13/00 ,  G06F7/04

CPC classification number: G07C9/00309 ,  G08C17/02 ,  G08C19/28 ,  G07C2009/00793 ,  G08C2201/62 ,  H04J13/0074

Abstract: A remote control system for opening and closing a barrier, such as a garage door, includes an RF receiver and a plurality of RF transmitters. The transmitters and receiver include circuitry programmed to provide transmission of encrypted code signals each time the transmitters are used and employing a code hopping method which prevents unauthorized signal interception or code "grabbing". The system is operated in a code learning mode for the receiver by momentarily actuating a receiver learn mode button for receiving each transmitter identification code and a secret decryption key for that transmitter with the system automatically returning to the operate mode. Each transmitter identification and secret key code signal is automatically and randomly stored in an available and unused memory in the receiver circuitry. A multibit hopping code is transmitted from each transmitter to the receiver with each transmitter operation in the operate mode of the system and the hopping code changes with each transmission to prevent theft or code grabbing and resultant unauthorized operation of the system.