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Steven P Laur

from Indian Harbour Beach, FL
Age ~47

Steven Laur Phones & Addresses

  • Indian Harbour Beach, FL
  • Merritt Island, FL
  • 6420 Pleasant Creek Ct, Raleigh, NC 27613
  • s
  • 3208 River Bottom Rd, Cary, NC 27519
  • Hudson, FL
  • Rockville, MD
  • Port Saint Lucie, FL
  • Brooksville, FL

Publications

Us Patents

Phase Shift Modulation-Based Control Of Amplitude Of Ac Voltage Output Produced By Double-Ended Dc-Ac Converter Circuitry For Powering High Voltage Load Such As Cold Cathode Fluorescent Lamp

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US Patent:
7368880, May 6, 2008
Filed:
Jan 31, 2005
Appl. No.:
11/046976
Inventors:
Steven P. Laur - Raleigh NC, US
Zaki Moussaoui - Palm Bay FL, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
H05B 41/16
US Classification:
315247, 315224, 315276, 315307
Abstract:
A double-ended, DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load. The converter may be either voltage fed or current fed.

Circuit For Multiplexing Digital And Analog Information Via Single Pin Of Driver For Switched Mosfets Of Dc-Dc Converter

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US Patent:
7504816, Mar 17, 2009
Filed:
Feb 22, 2006
Appl. No.:
11/359076
Inventors:
Steven Patrick Laur - Raleigh NC, US
Wei Dong - Cary NC, US
Mehul Dilip Shah - Morrisville NC, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
G05B 24/00
H04J 15/00
G08C 15/00
US Classification:
323354, 323351, 307 2, 34082559, 370529
Abstract:
Multiple characteristics of a DC-DC converter, such as its mode of operation (e. g. , either forced continuous conduction mode, or discontinuous conduction mode), and an operational parameter (such as the dead-time between switching times of the output switching devices (upper and lower MOSFETs) of the converter, whose associated driver integrated circuit has a pin usage that leaves only a single pin available for auxiliary purposes, are programmed by a single pin-based digital and analog information multiplexing circuit that couples both digital information and analog information within the same control signal to the driver IC by way of only the one available pin.

Dc-Ac Converter Having Phase-Modulated, Double-Ended, Half-Bridge Topology For Powering High Voltage Load Such As Cold Cathode Fluorescent Lamp

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US Patent:
7560872, Jul 14, 2009
Filed:
Jul 6, 2005
Appl. No.:
11/175486
Inventors:
Steven P. Laur - Raleigh NC, US
Zaki Moussaoui - Palm Bay FL, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
H05B 37/02
H05B 37/00
H05B 41/16
US Classification:
315220, 315224, 315226, 315244, 315277, 315291
Abstract:
A phase-modulated, double-ended, half-bridge topology-based DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load.

Dc-Ac Converter Having Phase-Modulated, Double-Ended, Full-Bridge Topology For Powering High Voltage Load Such As Cold Cathode Fluorescent Lamp

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US Patent:
7564193, Jul 21, 2009
Filed:
Jul 6, 2005
Appl. No.:
11/175488
Inventors:
Steven P. Laur - Raleigh NC, US
Zaki Moussaoui - Palm Bay FL, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
H05B 41/24
US Classification:
315276, 315224, 315307, 315312
Abstract:
A phase-modulated, double-ended, full-bridge topology-based DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load.

Gate Driver Topology For Maximum Load Efficiency

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US Patent:
7615940, Nov 10, 2009
Filed:
Jun 30, 2006
Appl. No.:
11/479675
Inventors:
Weihong Qiu - San Jose CA, US
Ben Dowlat - San Jose CA, US
Rami Abou-Hamze - Los Gatos CA, US
Steven Laur - Raleigh NC, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
G05F 1/00
US Classification:
315308, 315247, 315291, 315307, 315224
Abstract:
A circuit comprises a first input for receiving a supply voltage and a second input for receiving a sensed current signal from an output of a DC to DC converter. The circuit also includes an output voltage for providing an adjustable drive voltage to a drive circuit. The circuit additionally includes circuitry for adjusting the drive voltage responsive to supply voltage and the sensed current signal.

Dc/Dc Converter With Adaptive Drive Voltage Supply

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US Patent:
7847531, Dec 7, 2010
Filed:
Sep 21, 2009
Appl. No.:
12/563468
Inventors:
Weihong Qiu - San Jose CA, US
Ben Dowlat - San Jose CA, US
Rami Abou-Hamze - Los Gatos CA, US
Steven Laur - Raleigh NC, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
G05F 1/56
US Classification:
323282, 323271, 323283, 323285
Abstract:
A circuit comprises a first input for receiving a supply voltage and a second input for receiving a sensed current signal from an output of a DC to DC converter. The circuit also includes an output voltage for providing an adjustable drive voltage to a drive circuit. The circuit additionally includes circuitry for adjusting the drive voltage responsive to supply voltage and the sensed current signal.

Circuit For Multiplexing Digital And Analog Information Via Single Pin Of Driver For Switched Mosfets Of Dc-Dc Converter

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US Patent:
7986137, Jul 26, 2011
Filed:
Mar 11, 2009
Appl. No.:
12/402302
Inventors:
Steven P. Laur - Raleigh NC, US
Wei Dong - Cary NC, US
Mehul Dilip Shah - Morrisville NC, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
G05B 24/00
US Classification:
323318, 307 1, 323354
Abstract:
Multiple characteristics of a DC-DC converter, such as its mode of operation (e. g. , either forced continuous conduction mode, or discontinuous conduction mode), and an operational parameter (such as the dead-time between switching times of the output switching devices (upper and lower MOSFETs) of the converter, whose associated driver integrated circuit has a pin usage that leaves only a single pin available for auxiliary purposes, are programmed by a single pin-based digital and analog information extracting circuit that couples both digital information and analog information within the same control signal to the driver IC by way of only the one available pin.

Switching Regulator With Balanced Control Configuration With Filtering And Referencing To Eliminate Compensation

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US Patent:
8154268, Apr 10, 2012
Filed:
Nov 26, 2008
Appl. No.:
12/324368
Inventors:
Rhys S. A. Philbrick - Cary NC, US
Matthew B. Harris - Raleigh NC, US
Steven P. Laur - Raleigh NC, US
Assignee:
Intersil Americas Inc. - Milpitas CA
International Classification:
G05F 1/565
G05F 1/575
US Classification:
323286, 323282, 323285
Abstract:
A controller for a switching regulator is disclosed including a sense circuit, an error amplifier circuit, a filter and reference circuit, and a comparator circuit. The switching regulator includes a pulse switch circuit coupled to an output inductor for developing an output voltage. The sense circuit provides a sense signal indicative of current through the output inductor. The error amplifier circuit develops an error signal indicative of error of the output voltage. The filter and reference circuit high pass filters the sense signal to provide a filtered sense signal, and references the filtered sense signal and the error signal to a common DC level. The comparator circuit develops a pulse control signal used to control switching of the pulse switch circuit based on comparing the error signal with the filtered sense signal.
Steven P Laur from Indian Harbour Beach, FL, age ~47 Get Report