Patents by Inventor Madhusudan Krishnan Iyengar

Madhusudan Krishnan Iyengar 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: 20240057297
    Abstract: Methods, systems, and apparatus for liquid coolant replacement in a cooling distribution unit during operation of the cooling distribution unit. Active liquid coolant to be replaced is removed from the flow cycle of the cooling distribution unit while the coolant distribution unit is operational and providing cooling to an electronic system. Additionally, replacement liquid coolant is provided to the flow cycle while the coolant distribution unit is operational and providing cooling to an electronic system.
    Type: Application
    Filed: October 17, 2022
    Publication date: February 15, 2024
    Inventors: Jorge Padilla, Reza Khiabani, Madhusudan Krishnan Iyengar
  • Patent number: 11832396
    Abstract: A server tray package includes a motherboard assembly that includes a plurality of data center electronic devices, the plurality of data center electronic devices including at least one heat generating processor device; and a liquid cold plate assembly. The liquid cold plate assembly includes a base portion mounted to the motherboard assembly, the base portion and motherboard assembly defining a volume that at least partially encloses the plurality of data center electronic devices; and a top portion mounted to the base portion and including a heat transfer member shaped to thermally contact the heat generating processor device, the heat transfer member including an inlet port and an outlet port that are in fluid communication with a cooling liquid flow path defined through the heat transfer member.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: November 28, 2023
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Christopher Gregory Malone, Yuan Li, Jorge Padilla, Woon-Seong Kwon, Teckgyu Kang, Norman Paul Jouppi
  • Patent number: 11564334
    Abstract: A server tray assembly includes a server tray support configured to receive a server board that includes a working fluid conduit fluidly coupled to a server board connector disposed on a back plane of the server board, a back wall of the server tray support includes a fluid connector configured to form an unbiased fluid connection with the server board connector; and a locking assembly secured to at least one of a server rack or the server tray support, the locking assembly disposed opposite the fluid connector is configured to engage a portion of the server board to bias the server board toward the fluid connector to fluidly seal the unbiased fluid connection between the server board connector and the fluid connector of the server tray support.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: January 24, 2023
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Avinash Panga
  • Publication number: 20220013435
    Abstract: Methods, systems, and apparatus, including an integrated circuit (IC) with a ring-shaped hot spot area. In one aspect, an IC includes a first area along an outside perimeter of a surface of the IC. The first area defines a first inner perimeter. The IC includes a second area that includes a center of the IC and that includes a first set of components. The second area defines a first outer. The IC includes a ring-shaped hot spot area between the first area and the second area. The ring-shaped hot spot area defines a ring outer perimeter that is juxtaposed with the first inner perimeter. The ring-shaped hot spot area defines a ring inner perimeter that is juxtaposed with the first outer perimeter. The ring-shaped hot spot area includes a second set of components that produce more heat than the first set of components.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: Madhusudan Krishnan Iyengar, Norman Paul Jouppi, Jorge Padilla, Christopher Gregory Malone
  • Patent number: 11197397
    Abstract: Systems and methods for data center liquid cooling apparatus provisioning are described. In some aspects, such systems and methods may provision one or more data center liquid cooling apparatus, e.g., prior to such apparatus being put into service to a data center to cool data center devices, such as server trays (and more specifically, heat-generating devices such as processors, memories, voltage regulators, and other devices mounted on motherboards of the server trays). In some aspects, such liquid cooling apparatus include cold plates or evaporators that are mounted in thermal communication with the heat generating devices (in the server trays) and utilize a flow of a cooling liquid (e.g., water, glycol, refrigerant) to remove heat from the server tray (e.g., with or without a phase change of the cooling liquid).
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: December 7, 2021
    Assignee: Google LLC
    Inventors: Jerry Chiu, Skyler Salman, Madhusudan Krishnan Iyengar
  • Patent number: 11158566
    Abstract: Methods, systems, and apparatus, including an integrated circuit (IC) with a ring-shaped hot spot area. In one aspect, an IC includes a first area along an outside perimeter of a surface of the IC. The first area defines a first inner perimeter. The IC includes a second area that includes a center of the IC and that includes a first set of components. The second area defines a first outer. The IC includes a ring-shaped hot spot area between the first area and the second area. The ring-shaped hot spot area defines a ring outer perimeter that is juxtaposed with the first inner perimeter. The ring-shaped hot spot area defines a ring inner perimeter that is juxtaposed with the first outer perimeter. The ring-shaped hot spot area includes a second set of components that produce more heat than the first set of components.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: October 26, 2021
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Norman Paul Jouppi, Jorge Padilla, Christopher Gregory Malone
  • Patent number: 10966352
    Abstract: This disclosure describes a cooling system, for example, for rack mounted electronic devices (e.g., servers, processors, memory, networking devices or otherwise) in a data center. In various disclosed implementations, the cooling system may be or include a liquid cold plate assembly that is part of or integrated with a server tray package. In some implementations, the liquid cold plate assembly includes a base portion and a top portion that, in combination, form a cooling liquid flow path through which a cooling liquid is circulated and a thermal interface between one or more heat generating devices and the cooling liquid.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: March 30, 2021
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Jorge Padilla
  • Publication number: 20210092872
    Abstract: A server tray assembly includes a server tray support configured to receive a server board that includes a working fluid conduit fluidly coupled to a server board connector disposed on a back plane of the server board, a back wall of the server tray support includes a fluid connector configured to form an unbiased fluid connection with the server board connector; and a locking assembly secured to at least one of a server rack or the server tray support, the locking assembly disposed opposite the fluid connector is configured to engage a portion of the server board to bias the server board toward the fluid connector to fluidly seal the unbiased fluid connection between the server board connector and the fluid connector of the server tray support.
    Type: Application
    Filed: December 7, 2020
    Publication date: March 25, 2021
    Inventors: Madhusudan Krishnan Iyengar, Avinash Panga
  • Publication number: 20210068309
    Abstract: Systems and methods for data center liquid cooling apparatus provisioning are described. In some aspects, such systems and methods may provision one or more data center liquid cooling apparatus, e.g., prior to such apparatus being put into service to a data center to cool data center devices, such as server trays (and more specifically, heat-generating devices such as processors, memories, voltage regulators, and other devices mounted on motherboards of the server trays). In some aspects, such liquid cooling apparatus include cold plates or evaporators that are mounted in thermal communication with the heat generating devices (in the server trays) and utilize a flow of a cooling liquid (e.g., water, glycol, refrigerant) to remove heat from the server tray (e.g., with or without a phase change of the cooling liquid).
    Type: Application
    Filed: November 11, 2020
    Publication date: March 4, 2021
    Inventors: Jerry Chiu, Skyler Salman, Madhusudan Krishnan Iyengar
  • Patent number: 10869412
    Abstract: Systems and methods for data center liquid cooling apparatus provisioning are described. In some aspects, such systems and methods may provision one or more data center liquid cooling apparatus, e.g., prior to such apparatus being put into service to a data center to cool data center devices, such as server trays (and more specifically, heat-generating devices such as processors, memories, voltage regulators, and other devices mounted on motherboards of the server trays). In some aspects, such liquid cooling apparatus include cold plates or evaporators that are mounted in thermal communication with the heat generating devices (in the server trays) and utilize a flow of a cooling liquid (e.g., water, glycol, refrigerant) to remove heat from the server tray (e.g., with or without a phase change of the cooling liquid).
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 15, 2020
    Assignee: Google LLC
    Inventors: Jerry Chiu, Skyler Salman, Madhusudan Krishnan Iyengar
  • Patent number: 10863651
    Abstract: A server tray assembly includes a server tray support configured to receive a server board that includes a working fluid conduit fluidly coupled to a server board connector disposed on a back plane of the server board, a back wall of the server tray support includes a fluid connector configured to form an unbiased fluid connection with the server board connector; and a locking assembly secured to at least one of a server rack or the server tray support, the locking assembly disposed opposite the fluid connector is configured to engage a portion of the server board to bias the server board toward the fluid connector to fluidly seal the unbiased fluid connection between the server board connector and the fluid connector of the server tray support.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: December 8, 2020
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Avinash Panga
  • Publication number: 20200373222
    Abstract: Methods, systems, and apparatus, including an integrated circuit (IC) with a ring-shaped hot spot area. In one aspect, an IC includes a first area along an outside perimeter of a surface of the IC. The first area defines a first inner perimeter. The IC includes a second area that includes a center of the IC and that includes a first set of components. The second area defines a first outer. The IC includes a ring-shaped hot spot area between the first area and the second area. The ring-shaped hot spot area defines a ring outer perimeter that is juxtaposed with the first inner perimeter. The ring-shaped hot spot area defines a ring inner perimeter that is juxtaposed with the first outer perimeter. The ring-shaped hot spot area includes a second set of components that produce more heat than the first set of components.
    Type: Application
    Filed: June 14, 2019
    Publication date: November 26, 2020
    Inventors: Madhusudan Krishnan Iyengar, Norman Paul Jouppi, Jorge Padilla, Christopher Gregory Malone
  • Publication number: 20200296862
    Abstract: A server tray package includes a motherboard assembly that includes a plurality of data center electronic devices, the plurality of data center electronic devices including at least one heat generating processor device; and a liquid cold plate assembly. The liquid cold plate assembly includes a base portion mounted to the motherboard assembly, the base portion and motherboard assembly defining a volume that at least partially encloses the plurality of data center electronic devices; and a top portion mounted to the base portion and including a heat transfer member shaped to thermally contact the heat generating processor device, the heat transfer member including an inlet port and an outlet port that are in fluid communication with a cooling liquid flow path defined through the heat transfer member.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 17, 2020
    Inventors: Madhusudan Krishnan Iyengar, Christopher Gregory Malone, Yuan Li, Jorge Padilla, Woon-Seong Kwon, Teckgyu Kang, Norman Paul Jouppi
  • Publication number: 20200187388
    Abstract: Systems and methods for data center liquid cooling apparatus provisioning are described. In some aspects, such systems and methods may provision one or more data center liquid cooling apparatus, e.g., prior to such apparatus being put into service to a data center to cool data center devices, such as server trays (and more specifically, heat-generating devices such as processors, memories, voltage regulators, and other devices mounted on motherboards of the server trays). In some aspects, such liquid cooling apparatus include cold plates or evaporators that are mounted in thermal communication with the heat generating devices (in the server trays) and utilize a flow of a cooling liquid (e.g., water, glycol, refrigerant) to remove heat from the server tray (e.g., with or without a phase change of the cooling liquid).
    Type: Application
    Filed: January 17, 2019
    Publication date: June 11, 2020
    Inventors: Jerry Chiu, Skyler Salman, Madhusudan Krishnan Iyengar
  • Patent number: 10681846
    Abstract: A server tray package includes a motherboard assembly that includes a plurality of data center electronic devices, the plurality of data center electronic devices including at least one heat generating processor device; and a liquid cold plate assembly. The liquid cold plate assembly includes a base portion mounted to the motherboard assembly, the base portion and motherboard assembly defining a volume that at least partially encloses the plurality of data center electronic devices; and a top portion mounted to the base portion and including a heat transfer member shaped to thermally contact the heat generating processor device, the heat transfer member including an inlet port and an outlet port that are in fluid communication with a cooling liquid flow path defined through the heat transfer member.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 9, 2020
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Christopher Gregory Malone, Yuan Li, Jorge Padilla, Woon-Seong Kwon, Teckgyu Kang, Norman Paul Jouppi
  • Patent number: 10645847
    Abstract: A data center cooling system includes a server rack sub-assembly that includes a motherboard mounted on a support member and a heat generating electronic devices mounted on the a motherboard; a cold plate positioned in thermal communication with at least a portion of the heat generating electronic devices, the cold plate configured to receive a flow of a cooling liquid circulated through a supply conduit fluidly coupled to a liquid inlet of the cold plate, through the cold plate, and through a return conduit fluidly coupled to a liquid outlet of the cold plate; and a modulating control valve attached to either of the motherboard or the support member and positioned in either of the supply conduit or the return conduit, the modulating control valve configured to adjust a rate of the flow of the cooling liquid based on an operating condition of at least one of the heat generating electronic devices.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 5, 2020
    Assignee: Google LLC
    Inventors: William Edwards, Madhusudan Krishnan Iyengar, Sundar Rajan, Jorge Padilla, Norman Paul Jouppi
  • Publication number: 20200100392
    Abstract: A server tray assembly includes a server tray support configured to receive a server board that includes a working fluid conduit fluidly coupled to a server board connector disposed on a back plane of the server board, a back wall of the server tray support includes a fluid connector configured to form an unbiased fluid connection with the server board connector; and a locking assembly secured to at least one of a server rack or the server tray support, the locking assembly disposed opposite the fluid connector is configured to engage a portion of the server board to bias the server board toward the fluid connector to fluidly seal the unbiased fluid connection between the server board connector and the fluid connector of the server tray support.
    Type: Application
    Filed: September 24, 2018
    Publication date: March 26, 2020
    Inventors: Madhusudan Krishnan Iyengar, Avinash Panga
  • Publication number: 20200100396
    Abstract: This disclosure describes a cooling system, for example, for rack mounted electronic devices (e.g., servers, processors, memory, networking devices or otherwise) in a data center. In various disclosed implementations, the cooling system may be or include a liquid cold plate assembly that is part of or integrated with a server tray package. In some implementations, the liquid cold plate assembly includes a base portion and a top portion that, in combination, form a cooling liquid flow path through which a cooling liquid is circulated and a thermal interface between one or more heat generating devices and the cooling liquid.
    Type: Application
    Filed: September 24, 2018
    Publication date: March 26, 2020
    Inventors: Madhusudan Krishnan Iyengar, Jorge Padilla
  • Patent number: 10548239
    Abstract: A cooling system, for example, for rack mounted electronic devices (e.g., servers, processors, memory, networking devices or otherwise) in a data center. In various disclosed implementations, the cooling system may be or include a liquid cold plate assembly that is part of or integrated with a server tray package. In some implementations, the liquid cold plate assembly includes a base portion and a top portion that, in combination, form a cooling liquid flow path through which a cooling liquid is circulated and a thermal interface between one or more heat generating devices and the cooling liquid.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: January 28, 2020
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Gregory Sizikov, Yuan Li, Jorge Padilla, Woon-Seong Kwon, Teckgyu Kang
  • Patent number: 10548240
    Abstract: A server tray package includes a motherboard assembly that includes a plurality of data center electronic devices; and a liquid cold plate assembly. The liquid cold plate assembly includes a base portion mounted to the motherboard assembly, the base portion and motherboard assembly defining a volume that at least partially encloses the plurality of data center electronic devices; and a top portion mounted to the base portion and including a heat transfer member that includes a first number of inlet ports and a second number of outlet ports that are in fluid communication with a cooling liquid flow path defined through the heat transfer member, the first number of inlet ports being different that the second number of outlet ports.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: January 28, 2020
    Assignee: Google LLC
    Inventors: Madhusudan Krishnan Iyengar, Christopher Gregory Malone, Yuan Li, Jorge Padilla, Woon-Seong Kwon, Teckgyu Kang, Norman Paul Jouppi