公开(公告)号：US20210064239A1

公开(公告)日：2021-03-04

申请号：US16588976

申请日：2019-09-30

Applicant: Microchip Technology Inc.

Inventor： Robert E. Caldwell, Jr.

IPC: G06F3/06 ,  G06F13/42

Abstract: A method for writing data to a dual-actuator disk drive includes providing a multi-actuator disk drive having a first actuator communicating with first disk platters and a second actuator communicating with second disk platters, receiving in a storage controller coupled to the disk drive a data stream including groups of blocks of data to be written to the multi-actuator disk drive, alternately distributing from a disk controller in the disk drive sequential ones of the groups of blocks of data from the data stream to the first actuator and the second actuator as defined by commands from the storage controller, and simultaneously writing from the first actuator to the at least one first disk platter ones of the groups of blocks of data routed to the first actuator and writing from the second actuator to the at least one second disk platter ones of the groups of blocks of data routed to the second actuator.

公开(公告)号：US10910050B2

公开(公告)日：2021-02-02

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：US20210011703A1

公开(公告)日：2021-01-14

申请号：US16577251

申请日：2019-09-20

Applicant: Microchip Technology Inc.

Inventor： Nilesh Rajbharti ,  Mark Ennamorato

IPC: G06F8/65 ,  G06F11/36 ,  G06F9/455 ,  G06F11/14

Abstract: A system and method for improved evaluation of semiconductor hardware is provided. The system comprises a firmware repository server, which firmware repository server comprises a plurality of firmware packages for the one or more evaluation hardware boards. The firmware repository server is further configured to: receive a firmware request for a user evaluation hardware board from a first of the client devices, search the plurality of firmware packages for compatible firmware packages for the user evaluation hardware board, generate a catalog of the compatible firmware packages for the user evaluation hardware board, transmit the catalog to the first client device, receive a request for a user selected firmware package from the catalog of compatible firmware packages, and to transmit firmware of the user selected firmware package to the client device for installation on the user evaluation hardware board.

公开(公告)号：US20200348738A1

公开(公告)日：2020-11-05

申请号：US16446498

申请日：2019-06-19

Applicant: Microchip Technology Inc.

Inventor： Renato Colombo ,  Cesare Bocchiola

IPC: G06F1/26 ,  H02M7/493 ,  H02M5/10

Abstract: A reverse power feeding (RPF) power supply unit (PSU) for remote network distribution point unit (DPU) that is reverse powered from multiple customer premise equipments (CPEs). A plurality of power converters, each having a different primary winding and sharing a common secondary winding of a transformer at the PSU, wherein only one of the power converters is operated at a time to provide a desired output voltage.

公开(公告)号：US20200328736A1

公开(公告)日：2020-10-15

申请号：US16557866

申请日：2019-08-30

Applicant: Microchip Technology Inc.

Inventor： Morten Terstrup ,  Thomas Joergensen

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

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：US10103635B2

公开(公告)日：2018-10-16

申请号：US15442886

申请日：2017-02-27

Applicant: Microchip Technology Incorporated

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

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/42 ,  H02M1/00

Abstract: A high power-factor buck-boost converter having a rectified low-frequency AC line voltage input and a DC output is provided. The converter may include a magnetic element, a controlled switch having a gate terminal and a drain terminal that is coupled to the magnetic element, a rectifier diode coupled to the magnetic element, an output smoothing capacitor coupled to the rectifier diode, and a control circuit having an output coupled to the gate terminal of the controlled switch for repeatedly turning the controlled switch off for a first time duration and on for a second time duration. The second time duration may be determined as a function of the first time duration immediately preceding the second time duration.

公开(公告)号：US10008967B2

公开(公告)日：2018-06-26

申请号：US15333249

申请日：2016-10-25

Applicant: Microchip Technology Incorporated

Inventor： Prasad Kulkarni ,  Ramesh Kankanala ,  Debraj Deb

IPC: H02P21/00 ,  H02P21/14

CPC classification number: H02P21/141 ,  H02P21/0089

Abstract: A closed loop flux weakening method and apparatus are provided. The closed loop flux weakening apparatus may include a difference circuit that obtains a difference between a q-axis reference voltage and a q-axis voltage, a controller that converts the difference between the q-axis reference voltage and the q-axis voltage into a d-axis current of a stator of the motor, and a summation circuit that obtains a d-axis reference current by adding the d-axis current of the stator of the motor and a feed forward d-axis current of the stator of the motor.

公开(公告)号：US09975145B2

公开(公告)日：2018-05-22

申请号：US14045689

申请日：2013-10-03

Applicant: Microchip Technology Inc.

Inventor： Jimes Lei ,  Ching Chu

IPC: B06B1/02

CPC classification number: B06B1/0215

Abstract: An electrical waveform generating circuit has a pair of Pulse Amplitude Controlled Switching Current Sources (PACS). A gate pulse driver circuit is coupled to an input of each of the pair of PACS for sending gate pulses for driving the pair of PACS. A digital-to-analog converter (DAC) circuit is coupled to the gate pulse driver circuit for controlling amplitudes of the gate pulses. A transducer is coupled to the PACS.

公开(公告)号：US09837889B2

公开(公告)日：2017-12-05

申请号：US13946952

申请日：2013-07-19

Applicant: Supertex, Inc.

Inventor： James T. Walker

IPC: H02M1/42 ,  H05B33/08

CPC classification number: H02M1/4225 ,  H05B33/0818 ,  Y02B70/126

Abstract: An improved power converter is disclosed.

公开(公告)号：US09658276B2

公开(公告)日：2017-05-23

申请号：US14743945

申请日：2015-06-18

Applicant: Microchip Technology Inc.

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

IPC: G01R31/26 ,  G01R31/02 ,  H02H3/04 ,  H02H3/08 ,  H02H3/093

CPC classification number: G01R31/2621 ,  G01R31/025 ,  H02H3/044 ,  H02H3/08 ,  H02H3/093

Abstract: A circuit and method are provided detecting a persistent short circuit in a power MOSFET for the purpose of protecting a load from over-current.