公开(公告)号：US20210210402A1

公开(公告)日：2021-07-08

申请号：US16816874

申请日：2020-03-12

Applicant: Microchip Technology Inc.

Inventor： Damian McCann

IPC: H01L23/367 ,  H01L23/373

Abstract: A thermal management package for a semiconductor device includes a high dielectric constant material substrate, a high thermal conductivity slug disposed in a first window in the high dielectric constant material substrate and held therein by a first bonding material, an outer substrate formed from a material having a low dielectric constant and having a second window formed therein, the high dielectric constant material substrate disposed in the second window in the low dielectric constant outer substrate and held therein by a second bonding material.

公开(公告)号：US20210005256A1

公开(公告)日：2021-01-07

申请号：US16525546

申请日：2019-07-29

Applicant: Microchip Technology Inc.

Inventor： John L. McCollum ,  Fengliang Xue

IPC: G11C13/00

Abstract: A ReRAM memory cell includes a ReRAM element, a programming circuit coupled to the ReRAM element and defining a programming circuit path in the ReRAM memory cell, and an erase circuit coupled to the ReRAM element and defining an erase circuit path in the ReRAM memory cell. The programming circuit path is separate from the erase circuit path.

公开(公告)号：US10797686B1

公开(公告)日：2020-10-06

申请号：US16557866

申请日：2019-08-30

Applicant: Microchip Technology Inc.

Inventor： Morten Terstrup ,  Thomas Joergensen

IPC: H03K5/135 ,  H04L7/033 ,  H03L7/085

Abstract: A phase predictor to accurately detect and predict the phase relationship between two clocks running at different frequencies. The phase relationship can be used to record the transmission and reception times of Ethernet frames transmitted over a transmission medium with very high accuracy.

公开(公告)号：US10149357B2

公开(公告)日：2018-12-04

申请号：US15437081

申请日：2017-02-20

Applicant: Microchip Technology Inc.

Inventor： Scott Lynch

IPC: H05B33/08

Abstract: Employed within an LED driver operating from the AC power line, the invention controls both input current and output power. With this regulation circuit, input current appears purely resistive, precisely tracking the input voltage waveshape. At the same time, it provides good line regulation and inherent phase dimmer compatibility, requiring no special circuitry to detect and handle a dimmer.

公开(公告)号：US09883554B2

公开(公告)日：2018-01-30

申请号：US15276253

申请日：2016-09-26

Applicant: Microchip Technology Incorporated

Inventor： Scott Lynch

IPC: H05B33/08

CPC classification number: H05B33/0812 ,  H05B33/083

Abstract: A sequential linear LED driver circuit is provided. The sequential linear LED driver circuit may include a plurality of current sinks, wherein each of the plurality of current sinks is configured to be coupled to a segment of a string of light-emitting diodes (LEDs), and a voltage divider that generates a plurality of reference voltages, wherein each of the plurality of reference voltages is applied to a respective current sink of the plurality of current sinks. The output of each current sink of the plurality of current sinks may be connected at a summing node.

公开(公告)号：US09698689B2

公开(公告)日：2017-07-04

申请号：US15088789

申请日：2016-04-01

Applicant: Microchip Technology Incorporated

Inventor： Alexander Mednik

IPC: H02M3/158 ,  H02M1/34 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/34 ,  H02M2001/0009

Abstract: A zero-voltage switching buck converter circuit and control circuit are provided. The buck converter circuit may include a first inductor, a smoothing capacitor coupled to the first inductor, a rectifier diode coupled in parallel with the first inductor and the smoothing capacitor, a control switch coupled to the first inductor, a control circuit configured to turn the control switch off and on repeatedly at a high frequency rate; and a snubber network coupled to the first inductor and the control circuit. The snubber network may include second and third inductors connected in series, wherein one terminal of the first inductor is connected to a node connecting the second and third inductors, and an auxiliary switch connected to the control circuit. A first terminal of the second inductor that is not connected to the node may be coupled to the control switch, and a first terminal of the third inductor that is not connected to the node may be coupled to the auxiliary switch.

公开(公告)号：US09661702B2

公开(公告)日：2017-05-23

申请号：US15051335

申请日：2016-02-23

Applicant: Microchip Technology Incorporated

Inventor： Alexander Mednik ,  Rohit Tirumala

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0845 ,  Y02B20/345 ,  Y02B20/347

Abstract: A constant-current controller with square wave input current shaping for driving a series of light emitting diodes (LEDs) is provided. The controller may include a sample and hold circuit that samples a current sense voltage, a first multiplier circuit that multiplies an output of the sample and hold circuit, an error detector circuit that compares an output of the multiplier circuit with a reference voltage, an error amplifier that amplifies an output of the error detector circuit, a second multiplier circuit that multiplies an output of the error amplifier by a coefficient, and an output circuit that outputs a pulse-width modulated control signal based on an output of the second multiplier circuit. The coefficient may vary depending on whether the constant-current LED driver controller is used with a boost converter or a buck-boost converter.

公开(公告)号：US09590613B2

公开(公告)日：2017-03-07

申请号：US14742571

申请日：2015-06-17

Applicant: Microchip Technology Inc.

Inventor： Alexander Mednik ,  Rohit Tirumala ,  Marc Tan ,  Simon Krugly

IPC: G05F1/00 ,  H03K17/16 ,  H02M3/158 ,  H02M1/08

CPC classification number: H03K17/162 ,  H02M1/08 ,  H02M3/1584 ,  H02M2003/1586

Abstract: A comparator sense input is disconnected from a current sense resistor for the duration of a switching transition in an adjacent channel(s). Instead, the sense input receives a signal of the magnitude and the slew rate sampled prior to the transition.

Abstract translation: 在相邻信道中的切换转换的持续时间内，比较器检测输入与电流检测电阻断开。 相反，感测输入接收在转换之前采样的幅度和转换速率的信号。

公开(公告)号：US09584009B2

公开(公告)日：2017-02-28

申请号：US13938229

申请日：2013-07-10

Applicant: Supertex, Inc.

Inventor： Marc Tan

IPC: H02M1/42 ,  H02M1/00

CPC classification number: H02M1/4225 ,  H02M2001/0009 ,  Y02B70/126

Abstract: The invention generally relates to the field of power factor correction and specifically to generation of a reference waveform which is proportional to line voltage and is controllable in amplitude.

Abstract translation: 本发明一般涉及功率因数校正领域，特别涉及一种与线路电压成比例且可在幅度上控制的参考波形的产生。

公开(公告)号：US09448575B2

公开(公告)日：2016-09-20

申请号：US14018281

申请日：2013-09-04

Applicant: Supertex, Inc.

Inventor： Tony Yuan Yen Mai ,  Isaac Terasuth Ko

IPC: G05F3/16 ,  G05F3/20 ,  G05F1/613 ,  G05F3/30

CPC classification number: G05F1/613 ,  G05F3/30

Abstract: An adjustable shunt regulator circuit has two current paths in parallel, with each current path having a bipolar transistor therein with the bases of the bipolar transistors of the two current paths connected in common. One of the current paths has a high impedance node. A MOS transistor has a gate connected to the high impedance node, and a source and a drain. A resistor divide circuit is connected in parallel to the source and drain of the MOS transistor and provides the output of the regulator circuit. The resistor divide circuit has a first resistor connected in series with a second resistor at a first node. A feedback connects the first node to the bases of the bipolar transistors connected in common of the two current paths.

Abstract translation: 可调并联调节器电路具有并联的两个电流路径，每个电流路径具有双极晶体管，其中两个电流路径的双极晶体管的基极共同连接。 其中一条电​​流路径具有高阻抗节点。 MOS晶体管具有连接到高阻抗节点的栅极以及源极和漏极。 电阻分压电路与MOS晶体管的源极和漏极并联连接，并提供稳压电路的输出。 电阻分压电路具有与第一节点处的第二电阻器串联连接的第一电阻器。 反馈将第一节点连接到两个电流路径共同连接的双极晶体管的基极。