Patents by Inventor Filipp Chekmazov
Filipp Chekmazov 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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Patent number: 9347836Abstract: A system and method for measuring integrated circuit (IC) temperature. An integrated circuit (IC) includes a thermal sensor and data processing circuitry. The thermal sensor utilizes switched currents provided to a reference diode and a thermal diode. The ratios of the currents provided to each of these diodes may be chosen to provide a given delta value between the resulting sampled diode voltages. At a later time, a different ratio of currents may be provided to each of these diodes to provide a second given delta value between the resulting sampled diode voltages. A differential amplifier within the data processing circuitry may receive the analog sampled voltages and determine the delta values. Other components within the data processing circuitry may at least digitize and store one or both of the delta values. A difference between the digitized delta values may calculated and used to determine an IC temperature digitized code.Type: GrantFiled: November 15, 2011Date of Patent: May 24, 2016Assignee: ATI Technologies ULCInventors: Grigori Temkine, Filipp Chekmazov, Paul Edelshteyn, Oleg Drapkin, Kristina Au
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Patent number: 9323274Abstract: A reference voltage generator is provided. In an example, the reference voltage generator includes a temperature-dependent device, a processing module configured to process a digital representations of first and second voltages derived from the temperature-dependent device and a reference voltage to determine a value, and a digital to analog converter (DAC) configured to generate a reference voltage based on the value. The first voltage is proportional to absolute temperature (PTAT) and the second voltage is complementary to absolute temperature (CTAT) and the reference voltage is substantially independent of absolute temperature in an operating temperature range of the reference voltage generator.Type: GrantFiled: November 28, 2012Date of Patent: April 26, 2016Assignee: ATI Technologies ULCInventors: Grigori Temkine, Filipp Chekmazov, Oleg Drapkin
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Patent number: 8854120Abstract: A method and circuitry for determining a temperature-independent bandgap reference voltage are disclosed. The method includes determining a quantity proportional to an internal series resistance of a p-n junction diode and determining the temperature-independent bandgap reference voltage using the quantity proportional to an internal series resistance.Type: GrantFiled: March 30, 2012Date of Patent: October 7, 2014Assignee: ATI Technologies ULCInventors: Grigori Temkine, Filipp Chekmazov, Oleg Drapkin
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Publication number: 20140145701Abstract: A reference voltage generator is provided. In an example, the reference voltage generator includes a temperature-dependent device, a processing module configured to process a digital representations of first and second voltages derived from the temperature-dependent device and a reference voltage to determine a value, and a digital to analog converter (DAC) configured to generate a reference voltage based on the value. The first voltage is proportional to absolute temperature (PTAT) and the second voltage is complementary to absolute temperature (CTAT) and the reference voltage is substantially independent of absolute temperature in an operating temperature range of the reference voltage generator.Type: ApplicationFiled: November 28, 2012Publication date: May 29, 2014Applicant: ATI Technologies ULCInventors: Grigori Temkine, Filipp Chekmazov, Oleg Drapkin
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Publication number: 20130162341Abstract: A method and circuitry for determining a temperature-independent bandgap reference voltage are disclosed. The method includes determining a quantity proportional to an internal series resistance of a p-n junction diode and determining the temperature-independent bandgap reference voltage using the quantity proportional to an internal series resistance.Type: ApplicationFiled: March 30, 2012Publication date: June 27, 2013Applicant: ATI TECHNOLOGIES ULCInventors: Grigori Temkine, Filipp Chekmazov, Oleg Drapkin
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Publication number: 20130144549Abstract: A system and method for calibrating integrated circuit (IC) temperature measurement circuits. An integrated circuit (IC) includes a thermal sensor and data processing circuitry. The IC may have a temperature measurement mode of operation and a calibration mode of operation. During the calibration mode, one or more stable reference voltages, rather than sensed voltages from a thermal sensor, are selected as input voltages to the data processing circuitry. Electronic components within the data processing circuitry receive the stable reference voltages and generate a temperature digital code. The generated temperature digital code may be compared to an expected temperature digital code based on theoretical ideal gains for each of the components within the data processing circuitry. The comparison leads to an updated value for a scaling factor to be stored and used in subsequent temperature measurements.Type: ApplicationFiled: December 1, 2011Publication date: June 6, 2013Inventors: Grigori Temkine, Filipp Chekmazov, Paul Edelshteyn, Oleg Drapkin, Kristina Au
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Publication number: 20130120930Abstract: A system and method for measuring integrated circuit (IC) temperature. An integrated circuit (IC) includes a thermal sensor and data processing circuitry. The thermal sensor utilizes switched currents provided to a reference diode and a thermal diode. The ratios of the currents provided to each of these diodes may be chosen to provide a given delta value between the resulting sampled diode voltages. At a later time, a different ratio of currents may be provided to each of these diodes to provide a second given delta value between the resulting sampled diode voltages. A differential amplifier within the data processing circuitry may receive the analog sampled voltages and determine the delta values. Other components within the data processing circuitry may at least digitize and store one or both of the delta values. A difference between the digitized delta values may calculated and used to determine an IC temperature digitized code.Type: ApplicationFiled: November 15, 2011Publication date: May 16, 2013Inventors: Grigori Temkine, Filipp Chekmazov, Paul Edelshteyn, Oleg Drapkin, Kristina Au
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Patent number: 8290728Abstract: A method includes generating a first, second and third voltage output from a temperature sensing element of an integrated circuit using a respective, corresponding first, second and third, switched current source, for sequentially switching a respective first, second and third excitation current through the temperature sensing element. The third switched current source generates the corresponding third voltage output as a reference voltage between the first voltage and the second voltage. An error corrected difference is calculated between the first voltage and the second voltage using the reference voltage. In the method, the second excitation current is proportional to the first excitation current by a value n, and the third excitation current is proportional to the first excitation current by the square root of n.Type: GrantFiled: December 18, 2008Date of Patent: October 16, 2012Assignee: ATI Technologies ULCInventors: Oleg Drapkin, Grigori Temkine, Kristina Au, Filipp Chekmazov, Paul Edelshteyn
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Publication number: 20100161261Abstract: A method includes generating a first, second and third voltage output from a temperature sensing element of an integrated circuit using a respective, corresponding first, second and third, switched current source, for sequentially switching a respective first, second and third excitation current through the temperature sensing element, wherein the third switched current source generates the corresponding third voltage output as a reference voltage between the first voltage and the second voltage; and calculating an error corrected difference between the first voltage and the second voltage using the reference voltage. In the method, the second excitation current is proportional to the first excitation current by a value n, and the third excitation current is proportional to the first excitation current by the square root of n.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Applicant: ATI TECHNOLOGIES ULCInventors: Oleg Drapkin, Grigori Temkine, Kristina Au, Filipp Chekmazov, Paul Edelshteyn