Steven G Shevach

US Patent:

6786639, Sep 7, 2004

Filed:

Aug 30, 2002

Appl. No.:

10/232258

Inventors:

Kevin Covi - Glenford NY
Raymond Longhi - Poughkeepsie NY
Edward J. Seminaro - Milton NY
Steven G. Shevach - Hurley NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01K 1500

US Classification:

374178, 374 1, 374137, 374185, 324763, 324525, 702130

Abstract:

A method and apparatus for measuring the temperature on an electronic chip. The Apparatus includes a thermal sense element on the chip, a power supply passing electrical current through said thermal sense element at a known voltage and temperature, and a measuring circuit determining the initial resistance of the thermal sense element at said known voltage and temperature. The measuring circuit measures the change of the resistance of the thermal sense element as the temperature of the electronic chip changes, and compares the change in resistance of the thermal sense element to the initial resistance. The measuring circuit determines the temperature of the electronic chip from the initial resistance and change in resistance of the thermal sense element during the operation of the electronic chip.

US Patent:

7298601, Nov 20, 2007

Filed:

Aug 9, 2005

Appl. No.:

11/199644

Inventors:

Kevin R. Covi - Glenford NY, US
Raymond J. Harrington - Staatsburg NY, US
Robert P. Makowicki - Staatsburg NY, US
Steven G. Shevach - Hurley NY, US
Dale F. Sorenson - Ruby NY, US
Brian C. Tucker - Hyde Park NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02H 9/00
H02H 3/20

US Classification:

361 56, 361 57, 361 911, 323272, 323285

Abstract:

A protection circuit for a parallel power system having at least two parallel coupled voltage regulators is disclosed. The protection circuit includes at least two isolation control circuits, each control circuit being coupled to a respective voltage regulator. Each isolation control circuit includes a current sense circuit for sensing current polarity at an output of the respective voltage regulator, and a controller for automatically isolating the respective voltage regulator when an over-voltage condition exists at an output of the parallel power system and a positive current polarity is sensed at the output of the respective voltage regulator. The at least two isolation control circuits isolate only a voltage regulator having positive current outflow during the over-voltage condition. In one embodiment, each isolation control circuit further includes an over-voltage detection circuit for detecting when the over-voltage condition exists at the output of the parallel power system.

US Patent:

7473101, Jan 6, 2009

Filed:

May 5, 2006

Appl. No.:

11/381858

Inventors:

William L. Brodsky - Binghamton NY, US
Kevin R. Covi - Glenford NY, US
Steven G. Shevach - Hurley NY, US
Mitchell L. Zapotoski - New Paltz NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01R 12/00

US Classification:

439 66

Abstract:

A connector for a voltage regulator module (VRM) that provides for a parallel coupling to a printed wiring board (PWB) without surface mounting of the VRM includes a plurality of conductive power blades mounted within slots of insulators. The VRM connector is coupled to PWB and VRM and provides for spacing between the VRM and the PWB. The VRM connector provides for high current flow and reduced circuit heating.

US Patent:

7787222, Aug 31, 2010

Filed:

Jun 27, 2007

Appl. No.:

11/769242

Inventors:

Kevin R. Covi - Glenford NY, US
Raymond J. Harrington - Staatsburg NY, US
Robert P. Makowicki - Staatsburg NY, US
Steven G. Shevach - Hurley NY, US
Dale F. Soreson - Ruby NY, US
Brain C. Tucker - Hyde Park NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02H 3/20

US Classification:

361 18

Abstract:

A protection circuit for a parallel power system having at least two parallel coupled voltage regulators is disclosed. The protection circuit includes at least two isolation control circuits, each control circuit being coupled to a respective voltage regulator. Each isolation control circuit includes a current sense circuit for sensing current polarity at an output of the respective voltage regulator, and a controller for automatically isolating the respective voltage regulator when an over-voltage condition exists at an output of the parallel power system and a positive current polarity is sensed at the output of the respective voltage regulator. The at least two isolation control circuits isolate only a voltage regulator having positive current outflow during the over-voltage condition. In one embodiment, each isolation control circuit further includes an over-voltage detection circuit for detecting when the over-voltage condition exists at the output of the parallel power system.

US Patent:

62785974, Aug 21, 2001

Filed:

Oct 5, 1999

Appl. No.:

9/412538

Inventors:

Kevin R. Covi - Glenford NY
Edward J. Seminaro - Milton NY
Steven Shevach - Hurley NY
Dale F. Sorenson - Ruby NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02H 700
H02H 320

US Classification:

361 911

Abstract:

An over-voltage protection circuit for power supplies employing phase-shift controllers is provided. The power supplies typically comprise a redundant system for maintaining availability of bus voltage in the event of the failure of one of the supplies. The circuitry provides advantages in high power applications over prior art by overcoming the inefficiencies of connecting the supplies to a common bus through a diode. Additional circuitry eliminates the false shutdown of working power supplies.

US Patent:

55396062, Jul 23, 1996

Filed:

Feb 25, 1994

Appl. No.:

8/201872

Inventors:

Kevin R. Covi - Glenford NY
William J. Petrowsky - Kingston NY
Steven G. Shevach - Hurley NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02H 300

US Classification:

361 94

Abstract:

An electronic circuit breaker includes multiloop control loops based upon a current sensing loop and a voltage sensing loop. The current sensing loop also operates to drive a timer which ultimately controls whether current flows through the load or not. Additionally, the current loop is made to be dominant over the voltage loop. However, during normal operation the voltage loop and current loop act cooperatively to effectively control the impedance as seen by the load.

US Patent:

20220301134, Sep 22, 2022

Filed:

Mar 22, 2021

Appl. No.:

17/208346

Inventors:

- Armonk NY, US
Peilin Song - Lagrangeville NY, US
Cyril Cabral, Jr. - Yorktown Heights NY, US
Steven G. Shevach - Hurley NY, US

International Classification:

G06T 7/00
G06T 7/33
G01N 21/359
G01N 21/88
G06N 20/00

Abstract:

Circuit board inspection by receiving a near infrared (NIR) image of at least a portion of a circuit board, analyzing the NIR image using a machine learning model, and detecting anomalous circuit board portions according to the analysis.

US Patent:

20230076383, Mar 9, 2023

Filed:

Sep 8, 2021

Appl. No.:

17/468922

Inventors:

- Armonk NY, US
Mark L. Demarie - Poughkeepsie NY, US
Steven G. Shevach - Hurley NY, US
Peter A. Wendling - Poughkeepsie NY, US

International Classification:

G05F 1/56

Abstract:

Embodiments for linking separate eFuse and ORING controllers for output overvoltage protection in power conversion applications. Voltage regulators are configured in parallel. An input circuit includes an input controller, the input circuit being coupled to an input of at least one voltage regulator of the voltage regulators. An output circuit includes an output controller, the output circuit being coupled to an output of the at least one voltage regulator. The output controller is coupled to the input circuit to cause the input circuit to prevent power to the at least one voltage regulator in response to the output controller detecting an overvoltage condition.