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Volodymyr Muratov

from Manchester, NH
Age ~64

Volodymyr Muratov Phones & Addresses

  • 55 River Rd, Manchester, NH 03102 (603) 206-5536
  • Milford, NH
  • 923 Discovery Way, Durham, NC 27703 (919) 596-1897

Publications

Us Patents

Dc To Dc Converter Method And Circuitry

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US Patent:
6621256, Sep 16, 2003
Filed:
Mar 7, 2002
Appl. No.:
10/093197
Inventors:
Volodymyr A. Muratov - Durham NC
Robert G. Hodgins - Durham NC
Thomas A. Jochum - Durham NC
Assignee:
Intersil Corporation - Palm Bay FL
International Classification:
G05F 140
US Classification:
323282, 323283
Abstract:
A DC-to-DC converter has a pulse width modulator PWM) and a hysteretic (ripple) modulator. For low current loads, the hysteretic modulator is selected; for high current loads, the PWM is selected. A mode selection switch senses the polarity of the switched output voltage at the end of each switching cycle. If the polarity changes from one cycle to the next, the mode may be instantly changed to the other mode. Counters are used to record the polarity at the end of each cycle and switching from one mode to another can be delayed by the counters to prevent changing modes based on spurious output voltage fluctuations.

Methods To Control The Droop When Powering Dual Mode Processors And Associated Circuits

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US Patent:
6680604, Jan 20, 2004
Filed:
Feb 22, 2001
Appl. No.:
09/791509
Inventors:
Volodymyr A. Muratov - Durham NC
Michael Coletta - Lake Forest CA
Wlodzimerz S. Wiktor - Raleigh NC
Assignee:
Intersil Corporation - Palm Bay FL
International Classification:
G05F 156
US Classification:
323285, 323283
Abstract:
A DC/DC converter has a DAC that receives a code associated with desired processor operating voltage and sets the reference voltage on its output. The reference voltage (V ) is boosted by the buffer amplifier to center the droop along the median load. A sensed current signal I is proportional to the load current I and can be either inductor current, or switch current, or diode (or synchronous switch) current. In all cases it is scaled down by the factor of gain G. A droop control feedback circuit includes an error amplifier. It has two inputs. In one embodiment the gain of the converter is by a signal inversely proportional to the processor clock frequency F and transformed to the current I that creates the voltage drop across the resistor R. The other input is coupled to the buffer amplifier output. As a result, the output voltage of the converter is inversely proportionally to the load current and is invariant to the processor clock frequency changes associated with the processor mode switchover.

Methods To Control The Droop When Powering Dual Mode Processors And Associated Circuits

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US Patent:
6919715, Jul 19, 2005
Filed:
Sep 23, 2003
Appl. No.:
10/668752
Inventors:
Volodymyr A. Muratov - Durham NC,
Michael Coletta - Lake Forest CA,
Wlodzimerz S. Wiktor - Raleigh NC,
Assignee:
Intersil Corporation - Palm Bay FL
International Classification:
G05F001/56
US Classification:
323285, 232283
Abstract:
A DC/DC converter has a DAC that receives a code associated with desired processor operating voltage and sets the reference voltage on its output. The reference voltage (V) is boosted by the buffer amplifier to center the droop along the median load. A sensed current signal Iis proportional to the load current Iand can be either inductor current, or switch current, or diode (or synchronous switch) current. In all cases it is scaled down by the factor of gain G. A droop control feedback circuit includes an error amplifier. It has two inputs. In one embodiment the gain of the converter is by a signal inversely proportional to the processor clock frequency Fand transformed to the current Ithat creates the voltage drop across the resistor R. The other input is coupled to the buffer amplifier output. As a result, the output voltage of the converter is inversely proportionally to the load current and is invariant to the processor clock frequency changes associated with the processor mode switchover.

Dc To Dc Converter Method And Circuitry

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US Patent:
20010035745, Nov 1, 2001
Filed:
May 1, 2001
Appl. No.:
09/846721
Inventors:
Volodymyr Muratov - Durham NC,
Robert Hodgins - Durham NC,
Thomas Jochum - Durham NC,
International Classification:
G05F001/40
US Classification:
323/283000
Abstract:
A DC-to-DC converter has a pulse width modulator PWM) and a hysteretic (ripple) modulator. For low current loads, the hysteretic modulator is selected; for high current loads, the PWM is selected. A mode selection switch senses the polarity of the switched output voltage at the end of each switching cycle. If the polarity changes from one cycle to the next, the mode may be instantly changed to the other mode. Counters are used to record the polarity at the end of each cycle and switching from one mode to another can be delayed by the counters to prevent changing modes based on spurious output voltage fluctuations.

Apparatus For Setting Output Power Levels Of Integrated Pwm Controller

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US Patent:
20020194516, Dec 19, 2002
Filed:
Sep 10, 2001
Appl. No.:
09/950469
Inventors:
Volodymyr Muratov - Durham NC,
Robert Hodgins - Durham NC,
International Classification:
G06F001/26
US Classification:
713/320000
Abstract:
An electronic system controls power to its central processing unit with digital voltage identification (VID) codes and analog set signals. The VID codes are converted into an analog VID signal by digital to analog converter An analog set voltage generated by a sense network sets the voltage level when the CPU operates at any voltage less than its maximum. Comparator and switch select either the analog VID voltage or the analog set voltage.
Volodymyr Muratov from Manchester, NH, age ~64 Get Report