Patents by Inventor Sombuddha Chakraborty
Sombuddha Chakraborty 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: 20250081476Abstract: A packaged integrated circuit (IC) includes a package substrate, an electronic device on the package substrate, and metal interconnects coupled between the electronic device and the package substrate. The packaged IC also includes an insulation material on the package substrate and encapsulating the electronic device. The insulation material surrounds the metal interconnects. An inductor is over the electronic device and is coupled to the package substrate. A magnetic material is on the insulation material and encapsulates the inductor. The magnetic material is different from the insulation material.Type: ApplicationFiled: August 31, 2023Publication date: March 6, 2025Inventors: Hidetoshi Inoue, Kenji Otake, Sombuddha Chakraborty, Taisuke Kazama
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Publication number: 20250030413Abstract: An integrated circuit is provided which comprises a transistor and a driver coupled to a gate of the transistor. In at least one example, the driver controls an operation of the transistor, wherein the driver is operable in a first configuration as a low-side gate driver for a voltage regulator, and wherein the transistor is operable in the first configuration as a low-side switch for the voltage regulator. In at least one example, the driver is operable in a second configuration as a high-side gate driver for the voltage regulator, and wherein the transistor is operable in the second configuration as a high-side switch for the voltage regulator.Type: ApplicationFiled: July 21, 2023Publication date: January 23, 2025Inventors: Anant Kamath, Taisuke Kazama, Sombuddha Chakraborty
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Publication number: 20240428987Abstract: In one example, an apparatus includes a base, a first inductor, and a second inductor. The first inductor is on the base. The first inductor has a first winding extension, a second winding extension, and a first winding coupled between the first winding extension and the second winding extension, in which at least a part of the second winding extension is vertically between at least a part of the first winding extension and the base. Also, the second inductor is on the base. The second inductor has a third winding extension, a fourth winding extension, and a second winding coupled between the third winding extension and the fourth winding extension, in which at least a part of the fourth winding extension is vertically between at least a part of the third winding extension and the base, and the second winding is laterally adjacent to the first winding.Type: ApplicationFiled: September 6, 2024Publication date: December 26, 2024Applicant: Texas Instruments IncorporatedInventors: Dongbin Hou, Sombuddha Chakraborty, Kenji Kawano, Jeffrey Morroni, Yuki Sato
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Patent number: 12087498Abstract: A device includes a first inductor and a second inductor reversely coupled with the first inductor. The first and second inductors have overlapping windings. The device also includes a housing for the first and second inductor. The housing is filled with a magnetic molding compound.Type: GrantFiled: August 17, 2021Date of Patent: September 10, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Dongbin Hou, Sombuddha Chakraborty, Kenji Kawano, Jeffrey Morroni, Yuki Sato
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Publication number: 20240072675Abstract: A system includes a control circuit having a voltage input and a control circuit output. The control circuit produces a control voltage at the control circuit output having a magnitude inversely related to a magnitude of an input voltage at the input voltage input. A VCO has a VCO control input and a VCO clock output. The VCO control input is coupled to the control circuit output. The VCO produces a VCO clock on the VCO clock output having a frequency that is a function of the control voltage. A protection circuit has a first clock input, a second clock input, and a protection circuit output. The second clock input is coupled to the VCO clock output. The protection circuit generates a protection circuit output signal at the protection circuit output based on a difference in frequency between a clock signal at the first clock input and the VCO clock.Type: ApplicationFiled: August 30, 2022Publication date: February 29, 2024Inventors: Jose V. FORMENTI, Robert MARTINEZ, Michael CORRY, Sombuddha CHAKRABORTY
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Publication number: 20230387817Abstract: A voltage converter includes a switch network, a rectifier, and a transformer coupled between the switch network and the rectifier. The voltage converter includes an adaptive ON-time generation circuit having a control input and a control output, the control input. The adaptive ON-time generation circuit is configured to receive a WAKE signal to turn ON the switch network, generate a signal indicative of an OFF time of the switch network, and determine an ON time for the switch network based on the signal indicative of the OFF time.Type: ApplicationFiled: May 31, 2022Publication date: November 30, 2023Inventors: Sombuddha CHAKRABORTY, Taisuke KAZAMA, Nicola BERTONI, Dongbin HOU, Raul BLECIC, Stefan HERZER
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Publication number: 20230318442Abstract: A switching converter controller includes a synchronization circuit having a first synchronization circuit input, a second synchronization circuit input, a first synchronization circuit output, and a second synchronization circuit output. The synchronization circuit is configured to: receive an early warning signal at the first synchronization circuit input; receive a load detection signal at the second synchronization circuit input; provide a first control signal at the first synchronization circuit output responsive to the early warning signal; and provide a second control signal at the second synchronization circuit output responsive to the load detection signal. The switching converter controller also includes a driver circuit configured to adjust an idle switch drive signal at a first driver circuit output and a power switch drive signal at a second driver circuit output responsive to the first control signal and the second control signal.Type: ApplicationFiled: March 30, 2022Publication date: October 5, 2023Inventors: Kevin SCOONES, Sombuddha CHAKRABORTY, Pourya ASSEM, Reza SHARIFI
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Publication number: 20230318455Abstract: A transient auxiliary converter includes: a transient auxiliary converter terminal; an inductor having a first side and a second side, the first side of the inductor coupled to the transient auxiliary converter terminal; a capacitor having a first electrode and a second electrode, the second electrode of the capacitor being coupled to ground; a first switch between the second side of the inductor and the first electrode of the capacitor; and a second switch between the second side of the inductor and ground. The first and second switches are operated in accordance with a charge mode and a transient response mode for the transient auxiliary converter. The charge mode builds up charge on the capacitor from charge at the transient auxiliary converter terminal. The transient response mode releases charge on the capacitor to the transient auxiliary converter terminal.Type: ApplicationFiled: March 30, 2022Publication date: October 5, 2023Inventors: Sombuddha CHAKRABORTY, Kevin SCOONES, Pourya ASSEM
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Patent number: 11575314Abstract: A controller for a boost power factor correction (PFC) converter. The controller is configured to operate the boost PFC converter in multiple operating modes, including a continuous conduction mode (CCM), a transition mode (TM), and a hybrid mode in which the controller operates the converter in both CCM and TM within a same line cycle. An example controller includes a current control loop and a mode transition circuit. The current control loop is configured to compute an inductor current for each of first and second operation modes, based on a current sample taken, for example, during a boost synchronous rectifier conduction period of the converter. The mode transition circuit includes digital logic circuitry and is configured to generate a pulse indicating that one, two or all three of: zero-voltage switching (ZVS) has been achieved; the synchronous rectifier conduction period is active; and/or one of TM or hybrid mode is active.Type: GrantFiled: May 28, 2021Date of Patent: February 7, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Saad Pervaiz, Sombuddha Chakraborty, Philomena Brady, Laszlo Balogh
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Publication number: 20230031749Abstract: A method includes receiving a first indication of an inductor current provided by a voltage converter. The method also includes, responsive to a ratio of a rate of change of the first indication to a rate of change of a compensation ramp being greater than a threshold value, providing a second indication to the ramp generator. The compensation ramp is provided by a ramp generator to control the voltage converter. The second indication is configured to cause the ramp generator to increase an absolute value of the rate of change of the compensation ramp. The method also includes, responsive to the ratio being less than the threshold value, providing a third indication to the ramp generator. The third indication is configured to cause the ramp generator to decrease the absolute value of the rate of change of the compensation ramp.Type: ApplicationFiled: July 30, 2021Publication date: February 2, 2023Inventors: Sombuddha CHAKRABORTY, Raveesh MAGOD RAMAKRISHNA
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Publication number: 20220393574Abstract: A controller for a boost power factor correction (PFC) converter. The controller is configured to operate the boost PFC converter in multiple operating modes, including a continuous conduction mode (CCM), a transition mode (TM), and a hybrid mode in which the controller operates the converter in both CCM and TM within a same line cycle. An example controller includes a current control loop and a mode transition circuit. The current control loop is configured to compute an inductor current for each of first and second operation modes, based on a current sample taken, for example, during a boost synchronous rectifier conduction period of the converter. The mode transition circuit includes digital logic circuitry and is configured to generate a pulse indicating that one, two or all three of: zero-voltage switching (ZVS) has been achieved; the synchronous rectifier conduction period is active; and/or one of TM or hybrid mode is active.Type: ApplicationFiled: May 28, 2021Publication date: December 8, 2022Inventors: Saad Pervaiz, Sombuddha Chakraborty, Philomena Brady, Laszlo Balogh
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Patent number: 11368089Abstract: Described systems, methods, and circuitries use an interleaved multi-level converter to convert an input signal received at an input node into an output signal at an output node. In one example, a power conversion system includes a first multi-level switching circuit, a second multi-level switching circuit, and a control circuit. The first multi-level switching circuit and the second multi-level switching circuit are coupled to a switching node, the input node, and a reference node. The control circuit is configured to generate, based on the output signal, switching control signals as pulse width modulated signals having a duty cycle to control the output signal and provide the switching control signals to the first multi-level switching circuit and the second multi-level switching circuit.Type: GrantFiled: April 3, 2020Date of Patent: June 21, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Sombuddha Chakraborty, Hakan Oner, Yogesh Kumar Ramadass
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Patent number: 11362587Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.Type: GrantFiled: December 29, 2017Date of Patent: June 14, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Orlando Lazaro, Kevin Scoones, Alvaro Aguilar, Jeffrey Anthony Morroni, Sombuddha Chakraborty
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Publication number: 20210375537Abstract: A device includes a first inductor and a second inductor reversely coupled with the first inductor. The first and second inductors have overlapping windings. The device also includes a housing for the first and second inductor. The housing is filled with a magnetic molding compound.Type: ApplicationFiled: August 17, 2021Publication date: December 2, 2021Inventors: Dongbin Hou, Sombuddha Chakraborty, Kenji Kawano, Jeffrey Morroni, Yuki Sato
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Publication number: 20210375540Abstract: A laminate embedded core and coil structure comprises a magnetic core embedded in a laminate structure that includes two types of laminates. A first laminate embeds the coils of the structure and a second laminate fills space between the magnetic core and the first laminate, as well as space below the magnetic core and lower surface of the first laminate. The first and second laminates form a laminate structure that protects and improves isolation of the magnetic components. Solder resist encloses the laminate structure, magnetic core and coils. The laminate embedded core and coil structure may be assembled on a transformer leadframe of various types using non-conductive paste.Type: ApplicationFiled: April 26, 2021Publication date: December 2, 2021Inventors: Yuki Sato, Kenji Otake, Zhemin Zhang, Byron Lovell Williams, Dongbin Hou, Sombuddha Chakraborty
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Publication number: 20210313891Abstract: Described systems, methods, and circuitries use an interleaved multi-level converter to convert an input signal received at an input node into an output signal at an output node. In one example, a power conversion system includes a first multi-level switching circuit, a second multi-level switching circuit, and a control circuit. The first multi-level switching circuit and the second multi-level switching circuit are coupled to a switching node, the input node, and a reference node. The control circuit is configured to generate, based on the output signal, switching control signals as pulse width modulated signals having a duty cycle to control the output signal and provide the switching control signals to the first multi-level switching circuit and the second multi-level switching circuit.Type: ApplicationFiled: April 3, 2020Publication date: October 7, 2021Inventors: Sombuddha Chakraborty, Hakan Oner, Yogesh Kumar Ramadass
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Patent number: 11094455Abstract: A device includes a first inductor and a second inductor reversely coupled with the first inductor, wherein the first and second inductors have overlapping windings. The device also includes a housing for the first and second inductor, wherein the housing is filled with a magnetic molding compound.Type: GrantFiled: December 27, 2018Date of Patent: August 17, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Dongbin Hou, Sombuddha Chakraborty, Kenji Kawano, Jeffrey Morroni, Yuki Sato
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Patent number: 11011978Abstract: An apparatus includes: a switched capacitor (SC) converter to generate a first voltage based on a voltage source; and a direct current-to-direct current (DC-DC) converter to generate a second voltage based on the voltage source of the apparatus. A difference between the first voltage and the second voltage corresponds to an output voltage.Type: GrantFiled: March 23, 2020Date of Patent: May 18, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Timothy McRae, Aleksandar Prodic, Sombuddha Chakraborty, Alvaro Aguilar, William James McIntyre
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Patent number: 10833585Abstract: Described herein is a technology for implementing a scalable SCIB regulator for high conversion step down application. Particularly, the SCIB is configured to include stacked input switch circuits with parallel-connected output switch circuits. The input switch circuits are stacked with or without DC shift switch circuits in between. Furthermore, the input voltage is stepped down to a biasing voltage by input switch circuits and then is regulated to one or more output voltages having one or more independent and predetermined values by output switch circuits. The input switch circuits, output switch circuits and DC shift switch circuits can be modified for scalable power capability and ease of control and manufacturing.Type: GrantFiled: November 30, 2018Date of Patent: November 10, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Yichao Tang, Sombuddha Chakraborty
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Publication number: 20200227997Abstract: An apparatus includes: a switched capacitor (SC) converter to generate a first voltage based on a voltage source; and a direct current-to-direct current (DC-DC) converter to generate a second voltage based on the voltage source of the apparatus. A difference between the first voltage and the second voltage corresponds to an output voltage.Type: ApplicationFiled: March 23, 2020Publication date: July 16, 2020Inventors: Timothy McRae, Aleksandar Prodic, Sombuddha Chakraborty, Alvaro Aguilar, William James McIntyre