Kenneth E Adkins

US Patent:

7528574, May 5, 2009

Filed:

Feb 16, 2006

Appl. No.:

11/357259

Inventors:

Kenneth C Adkins - Mason OH, US
M Abid Hussain - Sunnyvale CA, US

Assignee:

Summit Microelectronics, Inc. - Sunnyvale CA

International Classification:

H01M 10/44
H01M 10/46

US Classification:

320128

Abstract:

In one embodiment the present invention includes a method of charging a battery comprising storing a plurality of charging parameters in one or more programmable data storage elements. The charging parameters may be used to program a variety of battery charging parameters including constant currents, voltages, thresholds, timers, or temperature controls. In one embodiment, the present invention includes a software algorithm that changes the charging parameters to improve battery charging efficiency.

US Patent:

8258857, Sep 4, 2012

Filed:

Aug 25, 2010

Appl. No.:

12/868587

Inventors:

Kenneth C. Adkins - Mason OH, US
Sang Ton Ngo - San Jose CA, US
M. Abid Hussain - Los Altos CA, US
Thomas O'Brien - Powell OH, US
Sridhar Kotikalapoodi - Santa Clara CA, US
George A. Hall - Orangevale CA, US

Assignee:

Summit Microelectronics, Inc. - San Diego CA

International Classification:

G05F 1/10

US Classification:

327536

Abstract:

Embodiments of the present invention include charge pump circuits and methods. In one embodiment, a first charge pump receives a voltage and generates a first charge pump output voltage and current for supplying the power requirements of a circuit. A second charge pump is coupled in series with the first charge pump. The second charge pump generates a second charge pump output voltage and current for supplying different power requirements of the circuit. In one embodiment, the first charge pump provides a high current low voltage output to a first circuit and the second charge pump provides a low current high voltage output to a second circuit. Capacitors of the first charge pump may be external to an integrated circuit and capacitors of the second charge pump may be internal to the integrated circuit.

US Patent:

8344791, Jan 1, 2013

Filed:

Aug 1, 2012

Appl. No.:

13/564456

Inventors:

Kenneth C Adkins - Mason OH, US
Sang Ton Ngo - San Jose CA, US
M Abid Hussain - Los Altos CA, US
Thomas O'Brien - Powell OH, US
Sridhar Kotikalapoodi - Santa Clara CA, US
George A Hall - Orangevale CA, US

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

G05F 1/10

US Classification:

327536

Abstract:

Embodiments of the present invention include charge pump circuits and methods. In one embodiment, a first charge pump receives a voltage and generates a first charge pump output voltage and current for supplying the power requirements of a circuit. A second charge pump is coupled in series with the first charge pump. The second charge pump generates a second charge pump output voltage and current for supplying different power requirements of the circuit. In one embodiment, the first charge pump provides a high current low voltage output to a first circuit and the second charge pump provides a low current high voltage output to a second circuit. Capacitors of the first charge pump may be external to an integrated circuit and capacitors of the second charge pump may be internal to the integrated circuit.

US Patent:

8476890, Jul 2, 2013

Filed:

Feb 5, 2008

Appl. No.:

12/026497

Inventors:

Kenneth C Adkins - Mason OH, US
Anurag Kaplish - Sunnyvale CA, US

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

G05F 1/00

US Classification:

323285

Abstract:

In one embodiment the present invention includes a method of controlling a switching regulator based on a derived input current. In one embodiment, an output current of said switching regulator is detected and used to generate a first voltage or current signal corresponding to the output current. Additionally, a switching signal of said switching regulator is detected and used to generate a second voltage or current signal corresponding to the switching signal. The resulting signals may be combined to produce a voltage or current signal corresponding to an input current of said switching regulator. The switching signal may be modified based on the derived voltage or current signal and used to control the system.

US Patent:

8552753, Oct 8, 2013

Filed:

Nov 15, 2010

Appl. No.:

12/946463

Inventors:

Kenneth C. Adkins - Mason OH, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01R 27/08

US Classification:

324705, 324691, 324713

Abstract:

Embodiments of the present invention include circuits and methods for sensing resistance. In one embodiment, a current is generated into a node. The node is coupled to a first terminal of a resistor. A second terminal of the resistor is coupled in series with a capacitance and a reference voltage. The current is turned off when a voltage on the node meets a threshold. A second voltage is detected on the node after the current is turned off. A resistance value is determined based on the first voltage on the node and the second voltage on the node. In one embodiment, the resistor is external to an integrated circuit and sensed through a single pin of the integrated circuit. The integrated circuit may include a current source, comparator, and a digital-to-analog converter.

US Patent:

20130257358, Oct 3, 2013

Filed:

May 22, 2013

Appl. No.:

13/900354

Inventors:

Kenneth C Adkins - Mason OH, US
Georgios Konstantinos Paparrizos - Foster City CA, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

H02J 7/00

US Classification:

320107, 320162

Abstract:

In one embodiment the present invention includes a system and method of charging a battery using a switching regulator. In one embodiment, a switching regulator receives an input voltage and input current. The output of the switching regulator is coupled to a battery to be charged. The switching regulator provides a current into the battery that is larger than the current into the switching regulator. As the voltage on the battery increases, the current provided by the switching regulator is reduced. The present invention may be implemented using either analog or digital techniques for reducing the current into the battery as the battery voltage increases.