Patents by Inventor Anurag Kaplish
Anurag Kaplish 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: 11921533Abstract: Example implementations include a bandgap voltage device with a first current source operatively coupled to a bandgap input node and a bandgap output node and operable to output a first proportional-to-absolute-temperature (PTAT) current, a current mirror including a first bandgap transistor and a second bandgap transistor, and operatively coupled to the bandgap output node, and a second current source operatively coupled to the current mirror and operable to output a second PTAT current.Type: GrantFiled: March 31, 2023Date of Patent: March 5, 2024Assignee: Renesas Electronics America Inc.Inventor: Anurag Kaplish
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Publication number: 20230244261Abstract: Example implementations include a bandgap voltage device with a first current source operatively coupled to a bandgap input node and a bandgap output node and operable to output a first proportional-to-absolute-temperature (PTAT) current, a current mirror including a first bandgap transistor and a second bandgap transistor, and operatively coupled to the bandgap output node, and a second current source operatively coupled to the current mirror and operable to output a second PTAT current.Type: ApplicationFiled: March 31, 2023Publication date: August 3, 2023Applicant: Renesas Electronics America Inc.Inventor: Anurag KAPLISH
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Publication number: 20210064074Abstract: Example implementations include a bandgap voltage device with a first current source operatively coupled to a bandgap input node and a bandgap output node and operable to output a first proportional-to-absolute-temperature (PTAT) current, a current mirror including a first bandgap transistor and a second bandgap transistor, and operatively coupled to the bandgap output node, and a second current source operatively coupled to the current mirror and operable to output a second PTAT current.Type: ApplicationFiled: August 28, 2020Publication date: March 4, 2021Applicant: Renesas Electronics America Inc.Inventor: Anurag KAPLISH
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Patent number: 8476890Abstract: In one embodiment the present invention includes a method of controlling a switching regulator based on a derived input current. In one embodiment, an output current of said switching regulator is detected and used to generate a first voltage or current signal corresponding to the output current. Additionally, a switching signal of said switching regulator is detected and used to generate a second voltage or current signal corresponding to the switching signal. The resulting signals may be combined to produce a voltage or current signal corresponding to an input current of said switching regulator. The switching signal may be modified based on the derived voltage or current signal and used to control the system.Type: GrantFiled: February 5, 2008Date of Patent: July 2, 2013Assignee: Qualcomm IncorporatedInventors: Kenneth C Adkins, Anurag Kaplish
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Patent number: 7683596Abstract: A control loop system is provided that employs an active DC output control circuit that more accurately calibrates the desired voltage at a load, e.g. 3.3 volts, by adjusting a trim pin on a DC/DC converter.Type: GrantFiled: June 24, 2005Date of Patent: March 23, 2010Assignee: Summit Microelectronics, Inc.Inventor: Anurag Kaplish
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Patent number: 7679349Abstract: Embodiments of the present invention include an electronic circuit for performing current sensing. In one embodiment, the present invention includes a first switching transistor and a second switching transistor both coupled to receive a first switching current and a switching signal, and one or more transistors coupled in a first series. A first terminal of an initial transistor in the first series is coupled to a second terminal of the second switching transistor. A second terminal of a last transistor in the first series is coupled to a reference voltage. The first switching current is coupled to a second node between the second terminal of the second switching transistor and the first terminal of the initial transistor in the first series. In this manner, the circuit produces a switching voltage corresponding to said first switching current.Type: GrantFiled: March 3, 2008Date of Patent: March 16, 2010Assignee: Summit Microelectronics, Inc.Inventor: Anurag Kaplish
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Publication number: 20090218996Abstract: Embodiments of the present invention include an electronic circuit for performing current sensing. In one embodiment, the present invention includes a first switching transistor and a second switching transistor both coupled to receive a first switching current and a switching signal, and one or more transistors coupled in a first series. A first terminal of an initial transistor in the first series is coupled to a second terminal of the second switching transistor. A second terminal of a last transistor in the first series is coupled to a reference voltage. The first switching current is coupled to a second node between the second terminal of the second switching transistor and the first terminal of the initial transistor in the first series. In this manner, the circuit produces a switching voltage corresponding to said first switching current.Type: ApplicationFiled: March 3, 2008Publication date: September 3, 2009Applicant: Summit Microelectronics, Inc.Inventor: Anurag Kaplish
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Publication number: 20090195230Abstract: In one embodiment the present invention includes a method of controlling a switching regulator based on a derived input current. In one embodiment, an output current of said switching regulator is detected and used to generate a first voltage or current signal corresponding to the output current. Additionally, a switching signal of said switching regulator is detected and used to generate a second voltage or current signal corresponding to the switching signal. The resulting signals may be combined to produce a voltage or current signal corresponding to an input current of said switching regulator. The switching signal may be modified based on the derived voltage or current signal and used to control the system.Type: ApplicationFiled: February 5, 2008Publication date: August 6, 2009Applicant: Summit Microelectronics, Inc.Inventors: Kenneth C. Adkins, Anurag Kaplish
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Patent number: 7158841Abstract: A feedback control-loop system that employs an active DC output control circuit is disclosed which compares an input parameter measurement against a target specification associated with the input parameter measurement. In one embodiment, the active DC output control circuit receives an input signal for laser bias adjustment. In another embodiment, the active DC output control circuit receives a motor speed input from a source, such as a tachometer, for motor speed adjustment. In another embodiment, the active DC output control circuit receives an input power amplifier measurement for wireless applications.Type: GrantFiled: April 23, 2004Date of Patent: January 2, 2007Assignee: Summit Microelectronics, Inc.Inventors: Theodore M. Myers, Kenneth C. Adkins, John A. Tabler, Anurag Kaplish, Thomas J. O'Brien
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Patent number: 7002266Abstract: A control loop system is provided that employs an active DC output control circuit that more accurately calibrates the desire voltage at a load, e.g. 3.3 volts, by adjusting a trim pin on a DC/DC converter. In a first embodiment, an active DC output control circuit calibrates a DC/DC converter that is connected to a single load. In a second embodiment, an active DC output control circuit calibrates multiple DC/DC converters that are connected to multiple loads.Type: GrantFiled: November 13, 2002Date of Patent: February 21, 2006Assignee: Summit MicroelectronicsInventors: Kenneth C. Adkins, Theodore Martin Myers, John Tabler, Anurag Kaplish, Thomas J. O'Obrien
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Patent number: 6710731Abstract: Digital-to-analog converter architecture guarantees monotonicity and partial compensation for integral non-linearity. Two stages are separated by a unity-gain operational amplifier, wherein the first stage is a 1-bit resistor string-converter, having one end at reference high voltage, and the other end at reference low voltage, and the second stage is a multi-bit resistor string converter. The architecture relieves matching accuracy necessary for 1-bit front end. Resistor mismatch is compensated by varying buffer amplifier offset-voltage, and ensuring amplifier output is halfway between reference voltages; this improves integral non-linearity, or absolute accuracy, by the amount of mismatch present in the resistor string. Buffer amplifier at output of second stage of DAC controls INL error by varying offset voltage.Type: GrantFiled: September 10, 2001Date of Patent: March 23, 2004Assignee: Summit Microelectronics, Inc.Inventors: Anurag Kaplish, John A. Tabler