Robert Charles Carroll

US Patent:

7923974, Apr 12, 2011

Filed:

Jan 4, 2008

Appl. No.:

11/969662

Inventors:

Gary D. Martin - Boxford MA, US
Robert T. Carroll - Andover MA, US

Assignee:

CHiL Semiconductor Corporation - Tewksbury MA

International Classification:

G05F 1/00
G05F 3/00

US Classification:

323212, 323213, 323237, 323243, 323246, 323222

Abstract:

A power supply system includes multiple power converter phases. A controller (e. g. , a processor device) monitors energy delivery for each of multiple power converter phases that supply energy to a load. The controller analyzes the energy delivery associated with each of the multiple power converter phases to identify an imbalance of energy delivered by the multiple power converter phases to the load. Based on the analyzing and detection of an imbalance condition, the controller modifies a future order of activating the multiple power converter phases for powering the load. Accordingly, a single phase of a multiphase switching power converter may be prevented from becoming overloaded while delivering energy to power the load.

US Patent:

8024138, Sep 20, 2011

Filed:

Jun 20, 2008

Appl. No.:

12/143056

Inventors:

Robert T. Carroll - Andover MA, US
James Noon - Merrimack NH, US
Venkat Sreenivas - Winchester MA, US
Gary D. Martin - Boxford MA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G01R 21/06

US Classification:

702 60, 702 64, 702 79, 702 81, 702189

Abstract:

In an example configuration, a power supply manager receives an output current value representing an amount of output current supplied by one or more power converter phases to a load. The power supply manager also receives a duty cycle value representing a duty cycle for controlling operation of the at least one power converter phase. The power supply manager produces an estimate of input current supplied to the power supply circuit based at least in part on multiplying the output current value by the duty cycle value. Contrary to conventional methods such as physically measuring an input current using complex measuring circuitry, embodiments herein include utilizing parameter information such as output current information and duty cycle information to deduce an amount of input current.

US Patent:

8134354, Mar 13, 2012

Filed:

Mar 3, 2009

Appl. No.:

12/396975

Inventors:

Benjamim Tang - Ranchos Palos Verdes CA, US
Robert T. Carroll - Andover MA, US
Scott W. Southwell - Seal Beach CA, US
Kenneth A. Ostrom - Palos Verdes Estates CA, US
Richard C. Pierson - Newport Beach CA, US

International Classification:

G05F 1/59

US Classification:

323283, 323272, 323284

Abstract:

Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a predetermined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected. The AVP load line is pre-positioned for more precise current control. Also disclosed is an adaptive filter with adjustable frequency characteristics in response to an ATR event.

US Patent:

8242759, Aug 14, 2012

Filed:

Jan 12, 2009

Appl. No.:

12/352491

Inventors:

Robert T. Carroll - Andover MA, US
James Noon - Merrimack NH, US
Venkat Sreenivas - Winchester MA, US
Gary D. Martin - Boxford MA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G05F 1/00

US Classification:

323272, 323283, 323284

Abstract:

According to one configuration, a multi-phase power supply adjusts a number of active phases based at least in part on a peak current supplied to a dynamic load. For example, a controller associated with the multi-phase power supply can monitor or receive a value indicative of a peak magnitude of current delivered by the multi-phase power supply to a dynamic load. The controller initiates comparison of the value to threshold information. Based at least in part on the comparison, the controller adjusts how many phases of the multi-phase power supply are activated to deliver the current delivered to the dynamic load. Thus, one embodiment herein is directed to controlling a multi-phase power supply based at least in part on a measured parameter such as peak current magnitude.

US Patent:

8344712, Jan 1, 2013

Filed:

Mar 22, 2011

Appl. No.:

13/069163

Inventors:

Gary D. Martin - Boxford MA, US
Robert T. Carroll - Andover MA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G05F 1/59
G05F 1/565

US Classification:

323272, 323222, 323283, 323285

Abstract:

A power supply system includes multiple power converter phases. A controller (e. g. , a processor device) monitors energy delivery for each of multiple power converter phases that supply energy to a load. The controller analyzes the energy delivery associated with each of the multiple power converter phases to identify an imbalance of energy delivered by the multiple power converter phases to the load. Based on the analyzing and detection of an imbalance condition, the controller modifies a future order of activating the multiple power converter phases for powering the load. Accordingly, a single phase of a multiphase switching power converter may be prevented from becoming overloaded while delivering energy to power the load.

US Patent:

8412923, Apr 2, 2013

Filed:

Feb 9, 2010

Appl. No.:

12/703082

Inventors:

Robert T. Carroll - Andover MA, US
Ronald Hulfachor - Nashua NH, US
Dror Barash - Brookline MA, US
Frank Kern - Bellingham WA, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G06F 1/24
G06F 1/26

US Classification:

713100, 713300

Abstract:

An integrated circuit resides on a circuit board. During operation, the digital controller integrated circuit produces control signals to control a power supply for delivery of power to a load. The integrated circuit can include multiple connectivity ports, on-board memory, and mode control logic. The multiple connectivity ports such as pins, pads, etc. , of the integrated circuit can be configured to provide connections between internal circuitry residing in the integrated circuit and external circuitry residing on a circuit board to which the integrated circuit is attached. The mode control logic monitors a status of one or more connectivity ports of the integrated circuit to detect when a board handler places the digital controller in a power island mode in which the integrated circuit is powered so that the board handler can access (e. g. , read/write) the memory in the digital controller integrated circuit while other portions of the board are unpowered.

US Patent:

8461816, Jun 11, 2013

Filed:

Jun 16, 2010

Appl. No.:

12/816744

Inventors:

Venkat Sreenivas - Winchester MA, US
Robert T. Carroll - Andover MA, US
James Noon - Merrimack NH, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G05F 1/59
G05F 1/575

US Classification:

323272, 232283

Abstract:

A controller receives a value indicative of a number of phases in a power supply to be activated for producing an output voltage to power a load. The controller utilizes the value to adjust a magnitude of at least one control coefficient associated with the power supply. The control can also use the value of the input voltage to adjust the magnitude of at least one control coefficient. The controller digitally computes values for the one or more control coefficients based on the received value indicating the number of phases in the power supply to be activated for producing the output voltage. Based on the adjusted magnitude of the at least one control coefficient, the controller produces control signals to control the number of phases in the power supply as specified by the value to produce the output voltage.

US Patent:

8558524, Oct 15, 2013

Filed:

Mar 22, 2011

Appl. No.:

13/069208

Inventors:

Robert T. Carroll - Andover MA, US
Ronald B. Hulfachor - Nashua NH, US

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

G05F 1/59

US Classification:

323272, 363 72

Abstract:

A power supply circuit can be configured to include a first circuit and a second circuit. Each circuit can be substantially identical to each other but provide different functionality depending on how they are configured. For example, each of the first circuit and second circuit can be chips having substantially the same pin layout and internal circuitry. However, the functionality provided by the circuits varies depending on whether a respective circuit is configured as a master or slave. The first circuit is configured as the master and generates multiple phase control signals. The first circuit uses a portion of the multiple phase control signals to control a first set of phases. The first circuit transmits a second portion of the multiple phase control signals to the second circuit configured as a slave. The second circuit is configured to receive and use the second portion of control signals to control a second set of phases.

Address:

148 M St #2, Boston, MA 02127

Phone:

(440)2595220

VIN:

4T1CE30P47U757026

Make:

TOYOTA

Model:

CAMRY SOLARA

Year:

2007