公开(公告)号：US20170257030A1

公开(公告)日：2017-09-07

申请号：US15599579

申请日：2017-05-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Reza Sharifi ,  Kevin Scoones ,  Orlando Lazaro

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/14 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A voltage converter includes a high side transistor, a low side transistor coupled to the high side transistor at a switching node, and an inductor coupled to the switching node and providing an output node. A controller is provided that is coupled to the high side transistor and the low side transistor. The controller is configured to selectively turn on and off the high and low side transistors in a repeat cycle. The controller is configured to control the high and low side transistors to cause a sequence of packets of charge to be delivered to the inductor. Also included is an adaptive timer circuit coupled to the output node and the controller and configured to adaptively adjust the amount of charge in each packet based on the voltage ripple of the output node.

公开(公告)号：US08508876B2

公开(公告)日：2013-08-13

申请号：US13712363

申请日：2012-12-12

Applicant: Texas Instruments Incorporated

Inventor： Arup Polley ,  Rajarshi Mukhopadhyay ,  Reza Sharifi ,  Mark A. Wolfe

IPC: G11B20/10

CPC classification number: G11B21/21 ,  G11B5/6029 ,  G11B5/6076

Abstract: A data storage system for detecting a location of a head relative to a magnetic media is described. This system comprises arms, a preamplifier circuit coupled to the arms for controlling the arms, a proximity sensing system positioned within the preamplifier circuit, the proximity sensing system comprising: an input stage for transmitting an input sense signal; a programmable gain stage coupled to receive the input sense signal and operative for transmitting a gain signal in response to receiving the input sense signal; a multiplexer coupled to receive the gain signal and at least one control signal, the multiplexer operative for transmitting a multiplexed signal; a detector coupled to receive the multiplexed signal and a second control signal, the detector operative for transmitting an output signal; wherein an amplitude associated with the output signal enables detecting the location of the head.

Abstract translation: 描述了一种用于检测头相对于磁性介质的位置的数据存储系统。 该系统包括臂，耦合到用于控制臂的臂的前置放大器电路，位于前置放大器电路内的接近感测系统，所述接近感测系统包括：用于传输输入感测信号的输入级; 可编程增益级，其被耦合以接收所述输入检测信号并且用于响应于接收所述输入检测信号而发送增益信号; 多路复用器，其耦合以接收增益信号和至少一个控制信号，多路复用器用于发送多路复用信号; 耦合以接收所述多路复用信号的检测器和第二控制信号，所述检测器用于发送输出信号; 其中与输出信号相关联的振幅使得能够检测头部的位置。