Matthew A Rowley

US Patent:

7986159, Jul 26, 2011

Filed:

Jul 16, 2010

Appl. No.:

12/838226

Inventors:

Jawaid Ahmad - Plano TX, US
Matthew D. Rowley - Parker TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03K 19/003
H03K 19/173
H05K 7/10

US Classification:

326 21, 326 38, 710301

Abstract:

With conventional redrivers used for external Serial Advanced Technology Attachment (eSATA), there is no ability to indicated to a host that an external device (like a hard disk drive) is not present. As a result, power is consumed by a host because of nearly continual transmission of communication reset signals. Here, a redriver has been provided that includes a cable disconnect terminal and circuitry within a controller that is able to detect whether an external device is present. This redriver enables a host to be powered down or placed in a low power mode while also enabling the use an eSATA compliant connector.

US Patent:

8643969, Feb 4, 2014

Filed:

Apr 26, 2012

Appl. No.:

13/457175

Inventors:

Rajarshi Mukhopadhyay - Allen TX, US
Matthew D. Rowley - Parker TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G11B 5/09

US Classification:

360 46

Abstract:

A method is provided. A first CMOS switch is deactivated while activating a second CMOS switch to cause the portion of the write signal to transition from a first direct current (DC) voltage to a first peak voltage. After a first interval, the second CMOS switch is deactivated while activating a third CMOS switch to cause the portion of the write signal to transition from the first peak voltage to a second DC voltage. After a second interval, the third CMOS switch is deactivated while activating a fourth CMOS switch to cause the portion of the write signal to transition from the second DC voltage to a second peak voltage After a third interval, the fourth CMOS switch is deactivated while activating the first CMOS switch to cause the portion of the write signal to transition from the second peak voltage to the first DC voltage.

US Patent:

20130257514, Oct 3, 2013

Filed:

Mar 30, 2012

Appl. No.:

13/435578

Inventors:

Matthew D. Rowley - Parker TX, US
Rajarshi Mukhopadhyay - Allen TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03K 17/687

US Classification:

327424

Abstract:

An apparatus is provided. A first switch is coupled between first and third nodes in an H-bridge. A second switch is coupled between first and fourth nodes in the H-bridge. A third switch is coupled between the second and third nodes. A fourth switch is coupled between second and fourth nodes in the H-bridge. A first source-follower is coupled to the first node of the H-bridge and the first supply rail, and the first source-follower is configured to receive a first reference signal. A second source-follower is coupled to the second node of the H-bridge and the second supply rail, and the second source-follower is configured to receive a second reference signal.

US Patent:

20150048866, Feb 19, 2015

Filed:

Aug 14, 2013

Appl. No.:

13/967303

Inventors:

- Dallas TX, US
Matthew D Rowley - Parker TX, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03K 17/10

US Classification:

327108

Abstract:

An aspect of the present invention includes a circuit having a cascaded H-bridge, an upper voltage supply component, a lower voltage supply component and a pre-driver component. The cascoded H-bridge is arranged to provide a driving signal for driving a load. The upper voltage supply component can provide an upper supply voltage to the cascoded H-bridge. The lower voltage supply component can provide a lower supply voltage to the cascaded H-bridge. The pre-driver component can provide a pre-driving signal to the cascoded H-bridge, wherein pre-driver component has a first voltage source and a second voltage source. The first voltage source can provide an upper swing voltage and the second voltage source can provide a lower swing voltage. The pre-driver component can provide the pre-driving signal based on the upper swing voltage, the lower swing voltage and one of the upper supply voltage and the lower supply voltage.