Patents by Inventor Matthew B. Harris
Matthew B. Harris has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240108334Abstract: Methods, devices, and systems for controlling a tissue-treatment motion by a surgical instrument are disclosed.Type: ApplicationFiled: September 30, 2022Publication date: April 4, 2024Inventors: Frederick E. Shelton, IV, Taylor W. Aronhalt, Michael J. Vendely, Shane R. Adams, Nicholas J. Ross, Matthew D. Cowperthwait, Jason L. Harris, Kevin M. Fiebig, Eric B. LaFay, Jose Luis De Cordoba Matilla, Raymond E. Parfett, Curtis A. Maples, Sarah A. Worthington, Jacqueline C. Aronhalt
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Patent number: 8344717Abstract: A switching regulator and controller and an electronic device using same are disclosed in which the controller includes 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 which balances the filtered sense signal and the error signal at a common DC level. The comparator circuit develops a pulse control signal using the error signal and the filtered sense signal, where the pulse control signal is for controlling switching of the pulse switch circuit.Type: GrantFiled: January 31, 2012Date of Patent: January 1, 2013Assignee: Intersil Americas Inc.Inventors: Rhys S. A. Philbrick, Matthew B. Harris, Steven P. Laur
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Publication number: 20120126773Abstract: A switching regulator and controller and an electronic device using same are disclosed in which the controller includes 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 which balances the filtered sense signal and the error signal at a common DC level. The comparator circuit develops a pulse control signal using the error signal and the filtered sense signal, where the pulse control signal is for controlling switching of the pulse switch circuit.Type: ApplicationFiled: January 31, 2012Publication date: May 24, 2012Applicant: INTERSIL AMERICAS INC.Inventors: Rhys S.A. Philbrick, Matthew B. Harris, Steven P. Laur
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Patent number: 8154268Abstract: 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.Type: GrantFiled: November 26, 2008Date of Patent: April 10, 2012Assignee: Intersil Americas Inc.Inventors: Rhys S. A. Philbrick, Matthew B. Harris, Steven P. Laur
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Publication number: 20090140711Abstract: 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.Type: ApplicationFiled: November 26, 2008Publication date: June 4, 2009Applicant: Intersil Americas Inc.Inventors: Rhys S. A. Philbrick, Matthew B. Harris, Steven P. Laur
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Patent number: 7215102Abstract: A semi-clockless, cascaded, current-mode regulator has a first regulator that receives a clock signal from a controller. By ‘semi-clockless’ is meant that a clock signal is applied to the first of a cascaded plurality of regulators, and that as a result of the cascading of clock delay circuits in each of the regulators, the remaining regulators receive sequentially delayed versions of the clock signal applied to the first regulator. The regulators are coupled to control the operations of associated pulse width modulation controlled switching circuits. Outputs of the switching circuits are combined to realize a multi-phase output voltage.Type: GrantFiled: July 20, 2005Date of Patent: May 8, 2007Assignee: Intersil Americas Inc.Inventors: Matthew B. Harris, Weihong Qiu
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Patent number: 7084613Abstract: A PWM system that minimizes output ripple of a multiphase DC-DC converter which converts N input voltages including at least one dissimilar input voltage. The PWM system includes PWM waveform logic that generates N PWM signals including a PWM signal for each of the N input voltages, and PWM control logic that optimizes relative phases of the N PWM signals based on voltage levels of the N input voltages. Various circuits and/or methods are contemplated for optimizing phase, including, for example, centering pulses for each PWM cycle, distributing pulses based on predetermined optimal phase angles, determining input voltage levels and selecting predetermined optimal phase angles, generating phase signals employing predetermined phase angles, measuring input voltages and calculating optimal phase angles, and using PLL logic or the like to measure and equalize off-times between PWM pulses.Type: GrantFiled: February 26, 2004Date of Patent: August 1, 2006Assignee: Intersil Americas Inc.Inventors: Matthew B. Harris, James W. Leith, Brandon D. Day
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Patent number: 7061215Abstract: A cascadable power regulator including a programmable delay unit and PWM control logic. The programmable delay unit initiates a delay period in response to a digital input signal and asserts a digital output signal upon expiration of the delay period. The PWM control logic controls a PWM cycle in response to the digital input signal and in response to an output control condition. The cascadable regulator uses digital signals to communicate between channels. Digital signals are not prone to the same kind of signal degradation or noise susceptibility as analog signals. Thus, the number of phases is not limited, the physical separation between the regulators is not limited, and the switching frequency is not as limited. There is no clock signal from a separate controller so that the controller is a relatively simple, low-cost device. Since there is no clock, a unique self-oscillating system is achieved using the cascadable regulator.Type: GrantFiled: December 18, 2003Date of Patent: June 13, 2006Assignee: Intersil Americas Inc.Inventor: Matthew B. Harris
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Patent number: 7026798Abstract: A reduced pin count, dual channel driver interface is configured to interface a supervisory controller with a plurality of multi-phase output channel switching circuits of a multi-phase DC-DC regulator. Each dual channel driver is configured for placement relatively close to output channel sense points, so as to effectively reduce the distance that would otherwise have to be traversed by noise sensitive voltage signals. Sensed current representative signals are processed within the dual driver for current balance between a respective multi driver pair, and are combined to supply the controller with the average current signal of the dual channels. The controller uses this average current-information to adjust respective pulse width modulation signals that are supplied to the dual channel drivers.Type: GrantFiled: July 9, 2004Date of Patent: April 11, 2006Assignee: Intersil Americas Inc.Inventors: Chun Cheung, Matthew B. Harris
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Patent number: 7002325Abstract: A clocked cascadable power regulator including synchronization logic and PWM control logic. The synchronization logic receives a clock signal and asserts a digital output signal synchronized with the clock signal in response to assertion of a digital input signal. The PWM control logic controls a PWM cycle in response to the digital input signal and in response to an output control condition. The regulator may be used alone or cascaded with other similar regulators for implementing a multiphase power converter with multiple channels. The clocked cascadable regulator uses digital signals to communicate between channels. Digital signals are not prone to the same kind of signal degradation or noise susceptibility as analog signals. In the cascaded configuration, there is one clock common to all channels which ensures that the phase separation between the channels is symmetrical to within the jitter tolerance of the common clock.Type: GrantFiled: December 29, 2003Date of Patent: February 21, 2006Assignee: Intersil Americas Inc.Inventors: Matthew B. Harris, Michael M. Walters
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Patent number: 6897636Abstract: A multi-phase DC—DC converter architecture in which parameters including error signal gains and modulator gains are defined so as to balance multiple converter channel currents, irrespective of whether the converter channels are supplied with the same or different input voltages.Type: GrantFiled: February 4, 2003Date of Patent: May 24, 2005Assignee: Intersil Americas Inc.Inventor: Matthew B. Harris
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Patent number: 6870352Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.Type: GrantFiled: June 2, 2004Date of Patent: March 22, 2005Assignee: Intersil Americas Inc.Inventors: Michael M. Walters, Matthew B. Harris, Bogdan M. Duduman
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Patent number: 6833690Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.Type: GrantFiled: March 23, 2004Date of Patent: December 21, 2004Assignee: Intersil Americas Inc.Inventors: Michael M. Walters, Matthew B. Harris, Bogdan M. Duduman
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Publication number: 20040217744Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.Type: ApplicationFiled: June 2, 2004Publication date: November 4, 2004Applicant: INTERSIL AMERICAS INC.Inventors: Michael M. Walters, Matthew B. Harris, Bogdan M. Duduman
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Patent number: 6812677Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.Type: GrantFiled: August 15, 2002Date of Patent: November 2, 2004Assignee: Intersil Americas Inc.Inventors: Michael M. Walters, Matthew B. Harris, Bogdan M. Duduman
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Publication number: 20040178779Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.Type: ApplicationFiled: March 23, 2004Publication date: September 16, 2004Applicant: INTERSIL AMERICAS INC.Inventors: Michael M. Walters, Matthew B. Harris, Bogdan M. Duduman
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Patent number: 6687105Abstract: The integrated control circuit is for an electronic circuit, such as a DC-to-DC converter, using current sense information developed across an intrinsic circuit element of the electronic circuit. The integrated control circuit includes a temperature sensor to sense a temperature rise induced by the intrinsic circuit element of the electronic circuit. The temperature error signal and a feedback signal from the intrinsic circuit element of the converter are combined to provide a temperature-corrected feedback signal to a control unit for the converter.Type: GrantFiled: August 15, 2002Date of Patent: February 3, 2004Assignee: Intersil Americas Inc.Inventors: Bogdan M. Duduman, Matthew B. Harris, Robert H. Isham
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Publication number: 20030201761Abstract: A multi-phase DC-DC converter architecture in which parameters including error signal gains and modulator gains are defined so as to balance multiple converter channel currents, irrespective of whether the converter channels are supplied with the same or different input voltages.Type: ApplicationFiled: February 4, 2003Publication date: October 30, 2003Applicant: Intersil Americas Inc., State of Incorporation: DelawareInventor: Matthew B. Harris
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Publication number: 20030039127Abstract: The integrated control circuit is for an electronic circuit, such as a DC-to-DC converter, using current sense information developed across an intrinsic circuit element of the electronic circuit. The integrated control circuit includes a temperature sensor to sense a temperature rise induced by the intrinsic circuit element of the electronic circuit. The temperature error signal and a feedback signal from the intrinsic circuit element of the converter are combined to provide a temperature-corrected feedback signal to a control unit for the converter.Type: ApplicationFiled: August 15, 2002Publication date: February 27, 2003Applicant: Intersil Americas Inc.Inventors: Bogdan M. Duduman, Matthew B. Harris, Robert H. Isham
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Patent number: RE42307Abstract: A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.Type: GrantFiled: March 21, 2007Date of Patent: April 26, 2011Assignee: Intersil Americas Inc.Inventors: Michael M. Walters, Matthew B. Harris, Bogdan M. Duduman