Patents by Inventor Rajeev Dinkar Joshi
Rajeev Dinkar Joshi 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: 20220415768Abstract: A semiconductor package includes a leadframe, a semiconductor die attached to the leadframe, and a passive component electrically connected to the semiconductor die through the leadframe. The leadframe includes a cavity in a side of the leadframe opposite the semiconductor die, and at least a portion of the passive component resides within the cavity in a stacked arrangement.Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventors: Jeffrey MORRONI, Rajeev Dinkar JOSHI, Sreenivasan K. KODURI, Sujan Kundapur MANOHAR, Yogesh K. RAMADASS, Anindya PODDAR
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Patent number: 11430722Abstract: A semiconductor package includes a leadframe, a semiconductor die attached to the leadframe, and a passive component electrically connected to the semiconductor die through the leadframe. The leadframe includes a cavity in a side of the leadframe opposite the semiconductor die, and at least a portion of the passive component resides within the cavity in a stacked arrangement.Type: GrantFiled: April 11, 2018Date of Patent: August 30, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jeffrey Morroni, Rajeev Dinkar Joshi, Sreenivasan K. Koduri, Sujan Kundapur Manohar, Yogesh K. Ramadass, Anindya Poddar
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Patent number: 10734313Abstract: A semiconductor package includes a leadframe and a semiconductor die attached to the leadframe by way of solder posts. In a stacked arrangement, the package also includes a passive component disposed between the leadframe and the semiconductor die and electrically connected to the semiconductor die through the leadframe.Type: GrantFiled: April 11, 2018Date of Patent: August 4, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jeffrey Morroni, Rajeev Dinkar Joshi, Sreenivasan K. Koduri, Sujan Kundapur Manohar, Yogesh K. Ramadass, Anindya Poddar
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Publication number: 20200194359Abstract: A power supply module includes a metallic clip including a plate having an area and a first and a second ridge on opposite sides of the plate. The ridges bent in the same direction away from the plate. The first and the second ridges conductively attached to the substrate, where the substrate is of insulating material integral with metal traces, the plate roofing over the substrate between the ridges. A first MOS field-effect transistor (FET) chip and, horizontally side-by-side, a second MOSFET chip are attached and wire bonded to the substrate under the plate. The drain of the first MOSFET is connected to the input terminal of the module, the source of the first MOSFET is tied to the drain of the second MOSFET, and the source of the second MOSFET, together with the second ridge, is connected to ground. A driver and controller chip is attached to the substrate under the plate and wire bonded to the gates of the first and second MOSFET.Type: ApplicationFiled: February 25, 2020Publication date: June 18, 2020Inventors: Rajeev Dinkar Joshi, Jie Mao
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Patent number: 10573585Abstract: A power supply module includes a metallic clip including a plate having an area and a first and a second ridge on opposite sides of the plate. The ridges bent in the same direction away from the plate. The first and the second ridges conductively attached to the substrate, where the substrate is of insulating material integral with metal traces, the plate roofing over the substrate between the ridges. A first MOS field-effect transistor (FET) chip and, horizontally side-by-side, a second MOSFET chip are attached and wire bonded to the substrate under the plate. The drain of the first MOSFET is connected to the input terminal of the module, the source of the first MOSFET is tied to the drain of the second MOSFET, and the source of the second MOSFET, together with the second ridge, is connected to ground. A driver and controller chip is attached to the substrate under the plate and wire bonded to the gates of the first and second MOSFET.Type: GrantFiled: March 19, 2018Date of Patent: February 25, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Rajeev Dinkar Joshi, Jie Mao
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Publication number: 20190287885Abstract: A power supply module includes a metallic clip including a plate having an area and a first and a second ridge on opposite sides of the plate. The ridges bent in the same direction away from the plate. The first and the second ridges conductively attached to the substrate, where the substrate is of insulating material integral with metal traces, the plate roofing over the substrate between the ridges. A first MOS field-effect transistor (FET) chip and, horizontally side-by-side, a second MOSFET chip are attached and wire bonded to the substrate under the plate. The drain of the first MOSFET is connected to the input terminal of the module, the source of the first MOSFET is tied to the drain of the second MOSFET, and the source of the second MOSFET, together with the second ridge, is connected to ground. A driver and controller chip is attached to the substrate under the plate and wire bonded to the gates of the first and second MOSFET.Type: ApplicationFiled: March 19, 2018Publication date: September 19, 2019Inventors: Rajeev Dinkar Joshi, Jie Mao
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Publication number: 20180301404Abstract: A semiconductor package includes a leadframe and a semiconductor die attached to the leadframe by way of solder posts. In a stacked arrangement, the package also includes a passive component disposed between the leadframe and the semiconductor die and electrically connected to the semiconductor die through the leadframe.Type: ApplicationFiled: April 11, 2018Publication date: October 18, 2018Inventors: Jeffrey MORRONI, Rajeev Dinkar JOSHI, Sreenivasan K. KODURI, Sujan Kundapur MANOHAR, Yogesh K. RAMADASS, Anindya PODDAR
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Publication number: 20180301402Abstract: A semiconductor package includes a leadframe, a semiconductor die attached to the leadframe, and a passive component electrically connected to the semiconductor die through the leadframe. The leadframe includes a cavity in which at least a portion of the passive component is disposed in a stacked arrangement.Type: ApplicationFiled: April 11, 2018Publication date: October 18, 2018Inventors: Jeffrey MORRONI, Rajeev Dinkar JOSHI, Sreenivasan K. KODURI, Sujan Kundapur MANOHAR, Yogesh K. RAMADASS, Anindya PODDAR
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Publication number: 20180301403Abstract: A semiconductor package includes a leadframe, a semiconductor die attached to the leadframe, and a passive component electrically connected to the semiconductor die through the leadframe. The leadframe includes a cavity in a side of the leadframe opposite the semiconductor die, and at least a portion of the passive component resides within the cavity in a stacked arrangement.Type: ApplicationFiled: April 11, 2018Publication date: October 18, 2018Inventors: Jeffrey MORRONI, Rajeev Dinkar JOSHI, Sreenivasan K. KODURI, Sujan Kundapur MANOHAR, Yogesh K. RAMADASS, Anindya PODDAR
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Patent number: 9468087Abstract: Disclosed examples include power modules and fabrication methods therefor in which one or more power device dies include a switching device and a second device die with a circuit component are mounted to a lead frame or other interconnect structure on a substrate structure, and a body structure is formed around portions of the power module providing a first opening to expose a portion of the substrate structure to provide an externally accessible first exposed surface along the top of the power module, and the body structure includes a second opening exposing a portion of the first device die along the bottom of the power module to provide a thermally conductive path to draw heat away from the power device dies.Type: GrantFiled: July 13, 2015Date of Patent: October 11, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Rajeev Dinkar Joshi
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Patent number: 9355946Abstract: Power supply system comprises vertically sequentially a QFN leadframe, a first chip with FET terminals on opposite sides, a flat interposer, and a second chip with FET terminals and the terminals of the integrated driver-and-control circuit on a single side. Leadframe pad has a portion recessed as pocket with a depth and an outline suitable for attaching the first chip with one terminal in the pocket and the opposite terminal co-planar with the un-recessed pad surface. The interposer comprises metal patterned in traces separated by gaps; the traces include metal of a first height and metal of a second height smaller than the first height, and insulating material filling the gaps and the height differences; one interposer side attached to the leadframe pad with the first chip, the opposite interposer side attached to the terminals of the second chip.Type: GrantFiled: August 11, 2015Date of Patent: May 31, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Rajeev Dinkar Joshi
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Publication number: 20150348890Abstract: Power supply system comprises vertically sequentially a QFN leadframe, a first chip with FET terminals on opposite sides, a flat interposer, and a second chip with FET terminals and the terminals of the integrated driver-and-control circuit on a single side. Leadframe pad has a portion recessed as pocket with a depth and an outline suitable for attaching the first chip with one terminal in the pocket and the opposite terminal co-planar with the un-recessed pad surface. The interposer comprises metal patterned in traces separated by gaps; the traces include metal of a first height and metal of a second height smaller than the first height, and insulating material filling the gaps and the height differences; one interposer side attached to the leadframe pad with the first chip, the opposite interposer side attached to the terminals of the second chip.Type: ApplicationFiled: August 11, 2015Publication date: December 3, 2015Inventor: Rajeev Dinkar Joshi
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Patent number: 9136256Abstract: Power supply system (100) comprises vertically sequentially a QFN leadframe (101), a first chip (110) with FET terminals on opposite sides, a flat interposer (120), and a second chip (130) with FET terminals and the terminals of the integrated driver-and-control circuit on a single side. Leadframe pad (107) has a portion (107a) recessed as pocket with a depth and an outline suitable for attaching the first chip with one terminal in the pocket and the opposite terminal co-planar with the un-recessed pad surface. The interposer comprises metal patterned in traces separated by gaps; the traces include metal of a first height and metal of a second height smaller than the first height, and insulating material filling the gaps and the height differences; one interposer side attached to the leadframe pad with the first chip, the opposite interposer side attached to the terminals of the second chip.Type: GrantFiled: February 20, 2014Date of Patent: September 15, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Rajeev Dinkar Joshi
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Publication number: 20150235999Abstract: Power supply system (100) comprises vertically sequentially a QFN leadframe (101), a first chip (110) with FET terminals on opposite sides, a flat interposer (120), and a second chip (130) with FET terminals and the terminals of the integrated driver-and-control circuit on a single side. Leadframe pad (107) has a portion (107a) recessed as pocket with a depth and an outline suitable for attaching the first chip with one terminal in the pocket and the opposite terminal co-planar with the un-recessed pad surface. The interposer comprises metal patterned in traces separated by gaps; the traces include metal of a first height and metal of a second height smaller than the first height, and insulating material filling the gaps and the height differences; one interposer side attached to the leadframe pad with the first chip, the opposite interposer side attached to the terminals of the second chip.Type: ApplicationFiled: February 20, 2014Publication date: August 20, 2015Inventor: Rajeev Dinkar Joshi
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Patent number: 7315077Abstract: Provided are a molded leadless package, and a sawing type molded leadless package and method of manufacturing same. The molded leadless package includes a lead frame pad having first and second surfaces opposite to each other. A semiconductor chip is adhered to the first surface of the lead frame pad. A lead is electrically coupled to the semiconductor chip. A molding material covers the lead frame pad, the semiconductor chip, and the lead and exposes a portion of the lead and a portion of the second surface of the lead frame pad. A step difference is formed between a surface of the molding material covering the second surface of the lead frame pad and the second surface of the lead frame pad itself. The sawing type molded leadless package includes a short-circuit preventing member that is post-shaped or convex, and protruding from the lower surface of the die pad.Type: GrantFiled: November 12, 2004Date of Patent: January 1, 2008Assignee: Fairchild Korea Semiconductor, Ltd.Inventors: Yoon-hwa Choi, Shi-baek Nam, O-seob Jeon, Rajeev Dinkar Joshi, Maria Cristina B. Estacio