Kenneth E Adkins

US Patent:

6400605, Jun 4, 2002

Filed:

May 30, 2000

Appl. No.:

09/583319

Inventors:

Kenneth C. Adkins - Fremont CA

Assignee:

Summit Microelectronics, Inc. - Campbell CA

International Classification:

G11C 1604

US Classification:

36518518, 36518519

Abstract:

The invention provides a single input pin on an integrated circuit chip that serves multiple functions during normal, test, and program modes. A first voltage detector detects a first predetermined high voltage level to place an integrated circuit in test mode. A second voltage detector detects a second predetermined high voltage level to place the integrated circuit in program mode. A high level switch is triggered to activate a pulse shaping circuit, which ramps up voltage gradually to prevent causing damage to programmable cells.

US Patent:

6791879, Sep 14, 2004

Filed:

Sep 23, 2002

Appl. No.:

10/252891

Inventors:

Kenneth C. Adkins - Fremont CA

Assignee:

Summit Microelectronics, Inc. - San Jose CA

International Classification:

G11C 1134

US Classification:

36518521, 365207

Abstract:

A programmable and non-volatile analog signal storage structure and method are disclosed that employ two non-volatile cells which are arranged as a differential transistor pair. The non-volatile transistor at the positive (or non-inverting) terminal of the amplifier is referred to as the reference cell, while the non-volatile transistor on the negative (or inverting) input of the amplifier is referred to as the storage cell. The structure comprises a storage cell and a reference cell that produces a voltage which is independent of temperature and supply voltage variation. Additionally, the circuit structure is capable of operating at low supply voltage levels (1. 5V).

US Patent:

7002266, Feb 21, 2006

Filed:

Nov 13, 2002

Appl. No.:

10/294842

Inventors:

Kenneth C. Adkins - Fremont CA, US
Theodore Martin Myers - Los Altos CA, US
John Tabler - San Jose CA, US
Anurag Kaplish - Mountain View CA, US
Thomas J. O'Obrien - Campbell CA, US

Assignee:

Summit Microelectronics - San Jose CA

International Classification:

H02M 3/16

US Classification:

307151, 323266

Abstract:

A control loop system is provided that employs an active DC output control circuit that more accurately calibrates the desire voltage at a load, e. g. 3. 3 volts, by adjusting a trim pin on a DC/DC converter. In a first embodiment, an active DC output control circuit calibrates a DC/DC converter that is connected to a single load. In a second embodiment, an active DC output control circuit calibrates multiple DC/DC converters that are connected to multiple loads.

US Patent:

7158841, Jan 2, 2007

Filed:

Apr 23, 2004

Appl. No.:

10/831508

Inventors:

Theodore M. Myers - Los Altos CA, US
Kenneth C. Adkins - Fremont CA, US
John A. Tabler - San Jose CA, US
Anurag Kaplish - Mountain View CA, US
Thomas J. O'Brien - Campbell CA, US

Assignee:

Summit Microelectronics, Inc. - Sunnyvale CA

International Classification:

G05B 13/02

US Classification:

700 28, 700 31

Abstract:

A feedback control-loop system that employs an active DC output control circuit is disclosed which compares an input parameter measurement against a target specification associated with the input parameter measurement. In one embodiment, the active DC output control circuit receives an input signal for laser bias adjustment. In another embodiment, the active DC output control circuit receives a motor speed input from a source, such as a tachometer, for motor speed adjustment. In another embodiment, the active DC output control circuit receives an input power amplifier measurement for wireless applications.

US Patent:

7834591, Nov 16, 2010

Filed:

Feb 16, 2006

Appl. No.:

11/356594

Inventors:

M Abid Hussain - Sunnyvale CA, US
Kenneth C Adkins - Mason OH, US
Georgios Konstantinos Paparrizos - Foster City CA, US

Assignee:

Summit Microelectronics, Inc. - CA

International Classification:

H02J 7/00

US Classification:

320137, 320128

Abstract:

Embodiments of the present invention include techniques for charging a battery using a switching regulator. Some embodiments include programmable switching battery chargers that can be configured using digital techniques. Other embodiments include switching battery chargers that modify the battery current based on sensed circuit conditions such as battery voltage or input current to the switching regulator. In one embodiment, the present invention includes a USB battery charger.

US Patent:

7880445, Feb 1, 2011

Filed:

Feb 16, 2006

Appl. No.:

11/356561

Inventors:

M Abid Hussain - Sunnyvale CA, US
Kenneth C Adkins - Mason OH, US
Georgios Konstantinos Paparrizos - Foster City CA, US

Assignee:

Summit Microelectronics, Inc. - Sunnyvale CA

International Classification:

H02J 7/06
H02J 7/24

US Classification:

320164

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.

US Patent:

8193780, Jun 5, 2012

Filed:

Dec 17, 2010

Appl. No.:

12/972200

Inventors:

M. Abid Hussain - Los Altos CA, US
Kenneth C. Adkins - Mason OH, US
Georgios Konstantinos Paparrizos - Foster City CA, US

Assignee:

Summit Microelectronics, Inc. - Sunnyvale CA

International Classification:

H02J 7/06
H02J 7/24

US Classification:

320164

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.

US Patent:

8471533, Jun 25, 2013

Filed:

May 11, 2012

Appl. No.:

13/470199

Inventors:

M. Abid Hussain - Los Altos CA, US
Kenneth C. Adkins - Mason OH, US
Georgios Konstantinos Paparrizos - Foster City CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H02J 7/06
H02J 7/24

US Classification:

320164

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.