Patents by Inventor Rohan U. Mandrekar

Rohan U. Mandrekar 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: 20240088032
    Abstract: Microelectronic modules are described. In an embodiment, a microelectronic module includes a module substrate, a chip mounted onto the module substrate, and a semiconductor-based integrated passive device between the chip and the module substrate. The semiconductor-based integrated passive device may include an upper RDL stack-up with thicker wiring layers than a lower BEOL stack-up. The semiconductor-based integrated passive device may be further solder bonded or hybrid bonded with the chip.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 14, 2024
    Inventors: Vidhya Ramachandran, Chi Nung Ni, Chueh-An Hsieh, Rekha Govindaraj, Jun Zhai, Long Huang, Rohan U. Mandrekar, Saumya K. Gandhi, Zhuo Yan, Yizhang Yang, Saurabh P. Sinha, Antonietta Oliva
  • Publication number: 20240063715
    Abstract: A power delivery sub-system included in a computer system employs a primary voltage regulator circuit that generates a primary supply voltage on a primary power supply node. The power delivery sub-system also includes multiple bypass voltage regulator circuits that source corresponding bypass currents to a local power supply nodes in an integrated circuit. The integrated circuit includes multiple circuit blocks coupled to corresponding ones of the local power supply nodes, and multiple local voltage regulator circuits coupled to the primary power supply node. When a voltage level of a given local power supply node drops below a threshold value, a corresponding local voltage regulator circuit sources a supply current to the given local power supply node.
    Type: Application
    Filed: August 16, 2022
    Publication date: February 22, 2024
    Inventors: Alexander B. Uan-Zo-li, Shuai Jiang, Jamie L. Langlinais, Per H. Hammarlund, Hans L. Yeager, Victor Zyuban, Sung J. Kim, Wei Xu, Rohan U. Mandrekar, Sambasivan Narayan, Mohamed H. Abu-Rahma, Jaroslav Raszka, Robert O. Bruckner
  • Patent number: 11076493
    Abstract: Some embodiments of the inventive subject matter are directed to forming, on a first circuit board, first pins that connect to first leads of a first electronic component; forming, on the first circuit board, second pins that connect to second leads of a second electronic component; affixing the first circuit board to a second circuit board having a first layer with first wires; and forming second wires on a second layer of the second circuit board, wherein said forming the second wires creates an electrical connection on the second circuit board between a portion of the first pins and a portion of the second pins. In some embodiments, the second circuit board is smaller than the first circuit board, and the second layer of the second circuit board is, in length, approximately equivalent to a distance between the first electronic component and the second electronic component.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: July 27, 2021
    Assignee: International Business Machines Corporation
    Inventors: Douglas A. Baska, Daniel M. Dreps, Rohan U. Mandrekar, Roger D. Weekly
  • Patent number: 11069665
    Abstract: Integrated passive devices (IPDs), electronic packaging structures, and methods of testing IPDs are described. In an embodiment, an electronic package structure includes an IPD with an array of capacitor banks that are electrically separate in the IPD, and a package routing that includes an interconnect electrically connected to an IC and a plurality of the capacitor banks in parallel.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: July 20, 2021
    Assignee: Apple Inc.
    Inventors: Vidhya Ramachandran, Chonghua Zhong, Jun Zhai, Long Huang, Mengzhi Pang, Rohan U. Mandrekar
  • Publication number: 20200176427
    Abstract: Integrated passive devices (IPDs), electronic packaging structures, and methods of testing IPDs are described. In an embodiment, an electronic package structure includes an IPD with an array of capacitor banks that are electrically separate in the IPD, and a package routing that includes an interconnect electrically connected to an IC and a plurality of the capacitor banks in parallel.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 4, 2020
    Inventors: Vidhya Ramachandran, Chonghua Zhong, Jun Zhai, Long Huang, Mengzhi Pang, Rohan U. Mandrekar
  • Publication number: 20180352662
    Abstract: Some embodiments of the inventive subject matter are directed to forming, on a first circuit board, first pins that connect to first leads of a first electronic component; forming, on the first circuit board, second pins that connect to second leads of a second electronic component; affixing the first circuit board to a second circuit board having a first layer with first wires; and forming second wires on a second layer of the second circuit board, wherein said forming the second wires creates an electrical connection on the second circuit board between a portion of the first pins and a portion of the second pins. In some embodiments, the second circuit board is smaller than the first circuit board, and the second layer of the second circuit board is, in length, approximately equivalent to a distance between the first electronic component and the second electronic component.
    Type: Application
    Filed: July 18, 2018
    Publication date: December 6, 2018
    Inventors: Douglas A. Baska, Daniel M. Dreps, Rohan U. Mandrekar, Roger D. Weekly
  • Patent number: 10034393
    Abstract: Some embodiments of the inventive subject matter are directed to forming, on a first circuit board, first pins that connect to first leads of a first electronic component; forming, on the first circuit board, second pins that connect to second leads of a second electronic component; affixing the first circuit board to a second circuit board having a first layer with first wires; and forming second wires on a second layer of the second circuit board, wherein said forming the second wires creates an electrical connection on the second circuit board between a portion of the first pins and a portion of the second pins. In some embodiments, the second circuit board is smaller than the first circuit board, and the second layer of the second circuit board is, in length, approximately equivalent to a distance between the first electronic component and the second electronic component.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: July 24, 2018
    Assignee: International Business Machines Corporation
    Inventors: Douglas A. Baska, Daniel M. Dreps, Rohan U. Mandrekar, Roger D. Weekly
  • Patent number: 9972566
    Abstract: An electronic device including a plurality of interconnects are orthogonally arranged in a grid pattern and evenly spaced by a first distance, the plurality of interconnects include: a first conductor pair with conductors arranged next to each other in a first direction, the first direction is oriented diagonally relative to the orthogonal grid pattern, a second conductor pair with conductors arranged next to each other in a second direction substantially perpendicular to the first direction, each conductor of the second conductor pair is spaced by the first distance from each signal conductor of the first conductor pair, and a third conductor pair with conductors arranged next to each other in a third direction substantially parallel to the first direction, each conductors of the third conductor pair is spaced by the first distance from one of the signal elements of the second conductor pair.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 15, 2018
    Assignee: International Business Machines Corporation
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Patent number: 9646925
    Abstract: An electronic device including a plurality of interconnects are orthogonally arranged in a grid pattern and evenly spaced by a first distance, the plurality of interconnects include: a first conductor pair with conductors arranged next to each other in a first direction, the first direction is oriented diagonally relative to the orthogonal grid pattern, a second conductor pair with conductors arranged next to each other in a second direction substantially perpendicular to the first direction, each conductor of the second conductor pair is spaced by the first distance from each signal conductor of the first conductor pair, and a third conductor pair with conductors arranged next to each other in a third direction substantially parallel to the first direction, each conductors of the third conductor pair is spaced by the first distance from one of the signal elements of the second conductor pair.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: May 9, 2017
    Assignee: International Business Machines Corporation
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Patent number: 9600619
    Abstract: One aspect is a method that includes identifying, by a power via placement tool executing on a processor of a circuit design system, a source and a sink of a voltage domain of a multi-layer circuit board based on a design file defining a layout of the multi-layer circuit board. A number of power vias to support a maximum current demand from the source to the sink is determined. Positions of a plurality of the power vias are determined at locations of the multi-layer circuit board forming paths through the power vias between the source and the sink and having a substantially equal total path length through each total path defined between the source and the sink through at least one of the power vias. The design file is modified to include the power vias at the positions.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: March 21, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Patent number: 9594865
    Abstract: One aspect is a method that includes identifying, by a power via placement tool executing on a processor of a circuit design system, a source and a sink of a voltage domain of a multi-layer circuit board based on a design file defining a layout of the multi-layer circuit board. A number of power vias to support a maximum current demand from the source to the sink is determined. Positions of a plurality of the power vias are determined at locations of the multi-layer circuit board forming paths through the power vias between the source and the sink and having a substantially equal total path length through each total path defined between the source and the sink through at least one of the power vias. The design file is modified to include the power vias at the positions.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: March 14, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Publication number: 20170048967
    Abstract: An electronic device including a plurality of interconnects are orthogonally arranged in a grid pattern and evenly spaced by a first distance, the plurality of interconnects include: a first conductor pair with conductors arranged next to each other in a first direction, the first direction is oriented diagonally relative to the orthogonal grid pattern, a second conductor pair with conductors arranged next to each other in a second direction substantially perpendicular to the first direction, each conductor of the second conductor pair is spaced by the first distance from each signal conductor of the first conductor pair, and a third conductor pair with conductors arranged next to each other in a third direction substantially parallel to the first direction, each conductors of the third conductor pair is spaced by the first distance from one of the signal elements of the second conductor pair.
    Type: Application
    Filed: October 28, 2016
    Publication date: February 16, 2017
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Patent number: 9543241
    Abstract: An electronic device including a plurality of interconnects are orthogonally arranged in a grid pattern and evenly spaced by a first distance, the plurality of interconnects include: a first conductor pair with conductors arranged next to each other in a first direction, the first direction is oriented diagonally relative to the orthogonal grid pattern, a second conductor pair with conductors arranged next to each other in a second direction substantially perpendicular to the first direction, each conductor of the second conductor pair is spaced by the first distance from each signal conductor of the first conductor pair, and a third conductor pair with conductors arranged next to each other in a third direction substantially parallel to the first direction, each conductors of the third conductor pair is spaced by the first distance from one of the signal elements of the second conductor pair.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: January 10, 2017
    Assignee: International Business Machines Corporation
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Publication number: 20170004923
    Abstract: In one embodiment, a method includes positioning a first signal pad in a first layer of a printed circuit board and positioning a second signal pad in a second layer of the printed circuit board. The second signal pad is positioned to form an embedded capacitance between the first signal pad and the second signal pad. The embedded capacitance between the first signal pad and the second signal pad is configured to carry a signal between the first layer and the second layer absent a signal via.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 5, 2017
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U Mandrekar, Tingdong Zhou
  • Publication number: 20160342724
    Abstract: One aspect is a method that includes identifying, by a power via placement tool executing on a processor of a circuit design system, a source and a sink of a voltage domain of a multi-layer circuit board based on a design file defining a layout of the multi-layer circuit board. A number of power vias to support a maximum current demand from the source to the sink is determined. Positions of a plurality of the power vias are determined at locations of the multi-layer circuit board forming paths through the power vias between the source and the sink and having a substantially equal total path length through each total path defined between the source and the sink through at least one of the power vias. The design file is modified to include the power vias at the positions.
    Type: Application
    Filed: August 25, 2015
    Publication date: November 24, 2016
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Publication number: 20160342723
    Abstract: One aspect is a method that includes identifying, by a power via placement tool executing on a processor of a circuit design system, a source and a sink of a voltage domain of a multi-layer circuit board based on a design file defining a layout of the multi-layer circuit board. A number of power vias to support a maximum current demand from the source to the sink is determined. Positions of a plurality of the power vias are determined at locations of the multi-layer circuit board forming paths through the power vias between the source and the sink and having a substantially equal total path length through each total path defined between the source and the sink through at least one of the power vias. The design file is modified to include the power vias at the positions.
    Type: Application
    Filed: May 20, 2015
    Publication date: November 24, 2016
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Patent number: 9456506
    Abstract: A mechanism is provided for packaging a multiple socket, one-hop symmetric multiprocessor topology. The mechanism connects each of a first plurality of processor modules to a first multiple-socket planar via a respective one of a first plurality of land grid array (LGA) connectors. The mechanism connects the first multiple-socket planar to a first side of a redistribution card via a second plurality of LGA connectors. The mechanism connects each of a second plurality of processor modules to a second multiple-socket planar via a respective one of a third plurality of LGA connectors. The mechanism connects the second multiple-socket planar to a second side of the redistribution card via a fourth plurality of LGA connectors.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: September 27, 2016
    Assignee: International Business Machines Corporation
    Inventors: John L. Colbert, Daniel M. Dreps, Paul M. Harvey, Rohan U. Mandrekar
  • Patent number: 9445507
    Abstract: A mechanism is provided for packaging a multiple socket, one-hop symmetric multiprocessor topology. The mechanism connects each of a first plurality of processor modules to a first multiple-socket planar via a respective one of a first plurality of land grid array (LGA) connectors. The mechanism connects the first multiple-socket planar to a first side of a redistribution card via a second plurality of LGA connectors. The mechanism connects each of a second plurality of processor modules to a second multiple-socket planar via a respective one of a third plurality of LGA connectors. The mechanism connects the second multiple-socket planar to a second side of the redistribution card via a fourth plurality of LGA connectors.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: September 13, 2016
    Assignee: International Business Machines Corporation
    Inventors: John L. Colbert, Daniel M. Dreps, Paul M. Harvey, Rohan U. Mandrekar
  • Publication number: 20160149611
    Abstract: An electronic device including a plurality of interconnects are orthogonally arranged in a grid pattern and evenly spaced by a first distance, the plurality of interconnects include: a first conductor pair with conductors arranged next to each other in a first direction, the first direction is oriented diagonally relative to the orthogonal grid pattern, a second conductor pair with conductors arranged next to each other in a second direction substantially perpendicular to the first direction, each conductor of the second conductor pair is spaced by the first distance from each signal conductor of the first conductor pair, and a third conductor pair with conductors arranged next to each other in a third direction substantially parallel to the first direction, each conductors of the third conductor pair is spaced by the first distance from one of the signal elements of the second conductor pair.
    Type: Application
    Filed: August 12, 2015
    Publication date: May 26, 2016
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou
  • Publication number: 20160150638
    Abstract: An electronic device including a plurality of interconnects are orthogonally arranged in a grid pattern and evenly spaced by a first distance, the plurality of interconnects include: a first conductor pair with conductors arranged next to each other in a first direction, the first direction is oriented diagonally relative to the orthogonal grid pattern, a second conductor pair with conductors arranged next to each other in a second direction substantially perpendicular to the first direction, each conductor of the second conductor pair is spaced by the first distance from each signal conductor of the first conductor pair, and a third conductor pair with conductors arranged next to each other in a third direction substantially parallel to the first direction, each conductors of the third conductor pair is spaced by the first distance from one of the signal elements of the second conductor pair.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 26, 2016
    Inventors: Zhaoqing Chen, Matteo Cocchini, Rohan U. Mandrekar, Tingdong Zhou