Stephen W Terry

US Patent:

7932703, Apr 26, 2011

Filed:

Jul 2, 2008

Appl. No.:

12/217242

Inventors:

Paul L. Brohlin - Parker TX, US
Stephen Terry - Knoxville TN, US
Richard K. Stair - Knoxville TN, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G05F 1/10
G05F 1/652

US Classification:

323222, 323223, 323224, 323282, 323284, 323285

Abstract:

A delay applied to a turn-on time for a high side switch in a switch mode power converter prevents oscillation between continuous and discontinuous conduction modes under light load conditions. The delay equalizes turn-on time for a high side switch with respect to continuous and discontinuous modes, so that turn-on time is not treated differently between the different modes. The delay value can be set for be equivalent to a propagation delay through a driver for a low side switch, in addition to a turn-off time for the low side switch. The addition of the delay element tends to maintain the switch mode power converter in a discontinuous mode under light load conditions and avoids oscillation between discontinuous and continuous conduction modes.

US Patent:

20110163608, Jul 7, 2011

Filed:

Jul 16, 2010

Appl. No.:

12/838298

Inventors:

Paul LeRoy Brohlin - Parker TX, US
Stephen Christopher Terry - Knoxville TN, US
Deepak Mohanlal Khanchandani - Banglaore, IN

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H01F 38/14

US Classification:

307104

Abstract:

An embodiment of the invention provides a method for reducing data corruption in a wireless power transmission system. Power is transmitted from a primary coil to a secondary coil by induction. The voltage induced on the secondary coil by induction is rectified. The change in current supplied to a load configured to be coupled to the wireless power transmission system is limited.

US Patent:

20130162200, Jun 27, 2013

Filed:

Dec 22, 2011

Appl. No.:

13/334700

Inventors:

Stephen C. Terry - Mckinney TX, US
Paul Brohlin - Parker TX, US

International Classification:

H02J 7/00

US Classification:

320108, 320162

Abstract:

A device includes a charge controller to regulate a battery output voltage based on an input voltage and an input current received from a charging circuit. A loop controller monitors the input voltage and the input current to generate a feedback signal to adjust the input voltage to the charge controller.