Patents by Inventor Arnab Kumar DUTTA

Arnab Kumar DUTTA 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).

  • Publication number: 20190123734
    Abstract: An apparatus includes an integrated circuit (IC), which includes complementary metal oxide semiconductor (CMOS) circuitry that includes a pull-up network coupled to a supply voltage and at least one input signal. The IC further includes a first metal oxide semiconductor (MOS) transistor coupled to the pull-up network and to a first bias voltage to reduce a gate-induced drain leakage (GIDL) current of the CMOS circuitry.
    Type: Application
    Filed: December 16, 2018
    Publication date: April 25, 2019
    Inventors: Arnab Kumar Dutta, Essam Atalla, Nicholas M. Atkinson
  • Patent number: 10158354
    Abstract: An apparatus includes an integrated circuit (IC), which includes complementary metal oxide semiconductor (CMOS) circuitry that includes a pull-up network coupled to a supply voltage and at least one input signal. The IC further includes a first metal oxide semiconductor (MOS) transistor coupled to the pull-up network and to a first bias voltage to reduce a gate-induced drain leakage (GIDL) current of the CMOS circuitry.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: December 18, 2018
    Assignee: Silicon Laboratories Inc.
    Inventors: Arnab Kumar Dutta, Essam Atalla, Nicholas M. Atkinson
  • Publication number: 20180234089
    Abstract: An apparatus includes an integrated circuit (IC), which includes complementary metal oxide semiconductor (CMOS) circuitry that includes a pull-up network coupled to a supply voltage and at least one input signal. The IC further includes a first metal oxide semiconductor (MOS) transistor coupled to the pull-up network and to a first bias voltage to reduce a gate-induced drain leakage (GIDL) current of the CMOS circuitry.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 16, 2018
    Inventors: Arnab Kumar Dutta, Essam Atalla, Nicholas M. Atkinson
  • Patent number: 9609701
    Abstract: A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as a converter in LED-based light bulbs. The power stage may be operated by a controller to maintain a desired current output to the LED load. The controller may operate the power stage by monitoring a start and end of a reverse recovery time of the BJT. Information regarding the start and end of the reverse recovery time may be used in the control of the power stage to improve efficiency of the power stage.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: March 28, 2017
    Assignee: Cirrus Logic, Inc.
    Inventors: John L. Melanson, Ramin Zanbaghi, Thirumalai Rengachari, Prashanth Drakshapalli, Rahul Singh, Arnab Kumar Dutta
  • Patent number: 9521712
    Abstract: Multiple measurements may be obtained via a single pin of an integrated circuit (IC) to set multiple control parameters of a light emitting diode (LED) controller within the IC. For example, a first input signal may be applied from the IC to two or more components via a single IC pin. A first output signal may be obtained from the two or more components via the single IC pin. A second input signal may be applied from the IC to the two or more components via the single IC pin, and a second output signal may be obtained from the two or more components via the single IC pin. A first parameter and a second parameter of the two or more components may be calculated based, at least in part, on the first output signal and the second output signal obtained via the single IC pin.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: December 13, 2016
    Assignee: Cirrus Logic, Inc.
    Inventors: John L. Melanson, Arnab Kumar Dutta, Stephen Hodapp, Prashanth Drakshapalli
  • Patent number: 9496855
    Abstract: A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: November 15, 2016
    Assignee: CIRRUS LOGIC, INC.
    Inventors: Siddharth Maru, John L. Melanson, Rahul Singh, Eric King, Thirumalai Rengachari, Ramin Zanbaghi, Arnab Kumar Dutta
  • Publication number: 20160255685
    Abstract: A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as a converter in LED-based light bulbs. The power stage may be operated by a controller to maintain a desired current output to the LED load. The controller may operate the power stage by monitoring a start and end of a reverse recovery time of the BJT. Information regarding the start and end of the reverse recovery time may be used in the control of the power stage to improve efficiency of the power stage.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 1, 2016
    Inventors: John L. Melanson, Ramin Zanbaghi, Thirumalai Rengachari, Prashanth Drakshapalli, Rahul Singh, Arnab Kumar Dutta
  • Patent number: 9185767
    Abstract: A self-oscillating resonator (SOR) may be used to control current through light emitting diodes (LEDs). The SOR may be started and stopped by a controller coupled to a transistor switch in the SOR. The controller may output a control signal that starts and stops the SOR by coupling a supply voltage or a ground to a base of the transistor switch in the SOR. Additional control over the current output to the LEDs may be gained through a resistive DAC coupled to the SOR and duty cycling the SOR.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: November 10, 2015
    Assignee: Cirrus Logic, Inc.
    Inventors: Ramin Zanbaghi, Arnab Kumar Dutta, Firas Azrai
  • Publication number: 20150028764
    Abstract: A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.
    Type: Application
    Filed: July 28, 2014
    Publication date: January 29, 2015
    Inventors: Siddharth Maru, John L. Melanson, Rahul Singh, Eric King, Thirumalai Rengachari, Ramin Zanbaghi, Arnab Kumar Dutta
  • Publication number: 20140312797
    Abstract: A self-oscillating resonator (SOR) may be used to control current through light emitting diodes (LEDs). The SOR may be started and stopped by a controller coupled to a transistor switch in the SOR. The controller may output a control signal that starts and stops the SOR by coupling a supply voltage or a ground to a base of the transistor switch in the SOR. Additional control over the current output to the LEDs may be gained through a resistive DAC coupled to the SOR and duty cycling the SOR.
    Type: Application
    Filed: January 17, 2014
    Publication date: October 23, 2014
    Applicant: CIRRUS LOGIC, INC.
    Inventors: Ramin ZANBAGHI, Arnab Kumar DUTTA, Firas AZRAI