Patents by Inventor Holger Kapels

Holger Kapels 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: 20240006264
    Abstract: An apparatus includes a substrate and a heat source structure connected to the substrate and configured to provide a heat quantity. Furthermore, a porous body including connected particles is provided, wherein gaps between the particles form fluidically connected cavities. The porous body is configured to at least partially receive the heat quantity of the heat source structure.
    Type: Application
    Filed: September 15, 2023
    Publication date: January 4, 2024
    Inventors: Thomas LISEC, Malte PAESLER, Holger KAPELS, Bjoern GOJDKA
  • Publication number: 20230395707
    Abstract: An electronic component comprises a first layer and a second layer, wherein a main surface of the first layer is arranged opposite a main surface of the second layer. The first layer comprises a polarized first material. A polarization of the first material faces in a first direction. The second layer comprises a polarized second material having at least one polarization state, wherein a direction of a polarization of the second material at least in the one polarization state of the second material is at least in part opposite to the first direction such that a charge zone forms along the main surface of the first and/or the second layer, said charge zone being electrically conductive at least when the second material is in the one polarization state.
    Type: Application
    Filed: August 24, 2023
    Publication date: December 7, 2023
    Inventors: Simon FICHTNER, Fabian LOFINK, Bernhard WAGNER, Holger KAPELS
  • Publication number: 20230395708
    Abstract: A transistor having high electron mobility (HEMT) having a first layer and a second layer is described. The first layer has a first material made of a first nitride compound. The first nitride compound has a group III element. The second layer has a second material made of a second nitride compound. The second nitride compound has a group III element. A main surface of the second layer is arranged opposite a main surface of the first layer, such that a charge zone forms along the main surface of the second layer. The HEMT further has a gate electrode, which is arranged opposite the second layer, at least in regions, such that the second layer is arranged between the first layer and the gate electrode. Furthermore, the HEMT has a third layer, which is arranged between the gate electrode and the second layer. The third layer has a ferroelectric third material made of a third nitride compound, or a ferroelectric third material made of an oxide compound which contains zinc.
    Type: Application
    Filed: August 24, 2023
    Publication date: December 7, 2023
    Inventors: Holger KAPELS, Simon FICHTNER, Fabian LOFINK, Bernhard WAGNER
  • Patent number: 10298131
    Abstract: An apparatus for controlling a switching DC-DC converter with a first half-bridge circuit including a first switch and a second switch, with a second half-bridge circuit including a third switch and a fourth switch and with an inductance connected between the center taps of the first and the second half-bridge circuit includes, according to embodiments, a control unit that is configured to adapt, in dependence on an input voltage and an output voltage at the switching DC-DC converter, a switching frequency of the switches of the DC-DC converter, the duty cycles of the first and fourth switch and the time delay between switching on the first and the fourth switch. The control unit is configured to determine the switching frequency, the first duty cycle, the second duty cycle and the time delay based on an output current of the switching DC-DC converter.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: May 21, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Zhe Yu, Holger Kapels, Klaus F. Hoffmann
  • Publication number: 20180287498
    Abstract: An apparatus for controlling a switching DC-DC converter with a first half-bridge circuit including a first switch and a second switch, with a second half-bridge circuit including a third switch and a fourth switch and with an inductance connected between the center taps of the first and the second half-bridge circuit includes, according to embodiments, a control unit that is configured to adapt, in dependence on an input voltage and an output voltage at the switching DC-DC converter, a switching frequency of the switches of the DC-DC converter, the duty cycles of the first and fourth switch and the time delay between switching on the first and the fourth switch. The control unit is configured to determine the switching frequency, the first duty cycle, the second duty cycle and the time delay based on an output current of the switching DC-DC converter.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 4, 2018
    Inventors: Zhe YU, Holger KAPELS, Klaus F. HOFFMANN
  • Patent number: 9923466
    Abstract: Embodiments of the present invention provide a DC-DC converter having a first DC voltage gate, a second DC voltage gate and a storage choke. The storage choke is coupled between the first DC voltage gate and the second DC voltage gate by means of electric switching elements. The DC-DC converter is configured such that a direction of a current flow through the storage choke is inverted at least once during a switching period of the electric switching elements. Further, the DC-DC converter is configured to track or readjust a switching frequency of the electric switching elements in case of a change of operating parameters of the DC-DC converter such that a change of direction of the current flow through the storage choke during a switching period of the electric switching elements is ensured.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: March 20, 2018
    Assignee: Fraunhofer-Gesellschaft Zur Foerderung Der Angewandlen Forschung E.V.
    Inventors: Zhe Yu, Klaus F. Hoffmann, Holger Kapels
  • Publication number: 20160190932
    Abstract: Embodiments of the present invention provide a DC-DC converter having a first DC voltage gate, a second DC voltage gate and a storage choke. The storage choke is coupled between the first DC voltage gate and the second DC voltage gate by means of electric switching elements. The DC-DC converter is configured such that a direction of a current flow through the storage choke is inverted at least once during a switching period of the electric switching elements. Further, the DC-DC converter is configured to track or readjust a switching frequency of the electric switching elements in case of a change of operating parameters of the DC-DC converter such that a change of direction of the current flow through the storage choke during a switching period of the electric switching elements is ensured.
    Type: Application
    Filed: March 10, 2016
    Publication date: June 30, 2016
    Inventors: Zhe Yu, Klaus F. Hoffmann, Holger Kapels
  • Patent number: 9312346
    Abstract: A semiconductor device has a cell field with drift zones of a first type of conductivity and charge carrier compensation zones of a second type of conductivity complementary to the first type. An edge region which surrounds the cell field has a higher blocking strength than the cell field, the edge region having a near-surface area which is undoped to more weakly doped than the drift zones, and beneath the near-surface area at least one buried, vertically extending complementarily doped zone is positioned.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: April 12, 2016
    Assignee: Infineon Technologies Austria AG
    Inventors: Anton Mauder, Franz Hirler, Armin Willmeroth, Michael Rueb, Holger Kapels
  • Patent number: 8963245
    Abstract: An integrated circuit and component is disclosed. In one embodiment, the component is a compensation component, configuring the compensation regions in the drift zone in V-shaped fashion in order to achieve a convergence of the space charge zones from the upper to the lower end of the compensation regions is disclosed.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: February 24, 2015
    Assignee: Infineon Technologies Austria AG
    Inventors: Armin Willmeroth, Holger Kapels
  • Publication number: 20140231969
    Abstract: A semiconductor device has a cell field with drift zones of a first type of conductivity and charge carrier compensation zones of a second type of conductivity complementary to the first type. An edge region which surrounds the cell field has a higher blocking strength than the cell field, the edge region having a near-surface area which is undoped to more weakly doped than the drift zones, and beneath the near-surface area at least one buried, vertically extending complementarily doped zone is positioned.
    Type: Application
    Filed: April 24, 2014
    Publication date: August 21, 2014
    Applicant: Infineon Technologies Austria AG
    Inventors: Anton Mauder, Franz Hirler, Armin Willmeroth, Michael Rueb, Holger Kapels
  • Patent number: 8716792
    Abstract: A semiconductor device has a cell field with drift zones of a first type of conductivity and charge carrier compensation zones of a second type of conductivity complementary to the first type. An edge region which surrounds the cell field has a higher blocking strength than the cell field, the edge region having a near-surface area which is undoped to more weakly doped than the drift zones, and beneath the near-surface area at least one buried, vertically extending complementarily doped zone is positioned.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: May 6, 2014
    Assignee: Infineon Technologies Austria AG
    Inventors: Anton Mauder, Franz Hirler, Armin Willmeroth, Michael Rueb, Holger Kapels
  • Publication number: 20130320444
    Abstract: An integrated circuit and component is disclosed. In one embodiment, the component is a compensation component, configuring the compensation regions in the drift zone in V-shaped fashion in order to achieve a convergence of the space charge zones from the upper to the lower end of the compensation regions is disclosed.
    Type: Application
    Filed: August 6, 2013
    Publication date: December 5, 2013
    Applicant: Infineon Technologies Austria AG
    Inventors: Armin Willmeroth, Holger Kapels
  • Patent number: 8502281
    Abstract: An integrated circuit and component is disclosed. In one embodiment, the component is a compensation component, configuring the compensation regions in the drift zone in V-shaped fashion in order to achieve a convergence of the space charge zones from the upper to the lower end of the compensation regions is disclosed.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: August 6, 2013
    Assignee: Infineon Technologies Austria AG
    Inventors: Armin Willmeroth, Holger Kapels
  • Publication number: 20120032255
    Abstract: An integrated circuit and component is disclosed. In one embodiment, the component is a compensation component, configuring the compensation regions in the drift zone in V-shaped fashion in order to achieve a convergence of the space charge zones from the upper to the lower end of the compensation regions is disclosed.
    Type: Application
    Filed: October 20, 2011
    Publication date: February 9, 2012
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Armin Willmeroth, Holger Kapels
  • Patent number: 8063419
    Abstract: An integrated circuit and component is disclosed. In one embodiment, the component is a compensation component, configuring the compensation regions in the drift zone in V-shaped fashion in order to achieve a convergence of the space charge zones from the upper to the lower end of the compensation regions is disclosed.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: November 22, 2011
    Assignee: Infineon Technologies Austria AG
    Inventors: Armin Willmeroth, Holger Kapels
  • Patent number: 8026704
    Abstract: A system and method for controlling a converter. One embodiment provides the cyclic actuation of a first switching element, used for applying an input voltage to an inductive storage element. A second switching element is used as a first rectifier element in a rectifier arrangement, in a step-up converter. An actuating circuit is provided for the first and second switching elements.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: September 27, 2011
    Assignee: Infineon Technologies Austria AG
    Inventors: Holger Kapels, Gerald Deboy
  • Patent number: 7977737
    Abstract: A semiconductor device with inherent capacitances and method for its production. The semiconductor device has an inherent feedback capacitance between a control electrode and a first electrode. In addition, the semiconductor device has an inherent drain-source capacitance between the first electrode and a second electrode. At least one monolithically integrated additional capacitance is connected in parallel to the inherent feedback capacitance or in parallel to the inherent drain-source capacitance. The additional capacitance comprises a first capacitor surface and a second capacitor surface opposite the first capacitor surface. The capacitor surfaces are structured conductive layers of the semiconductor device on a front side of the semiconductor body, between which a dielectric layer is located and which form at least one additional capacitor.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: July 12, 2011
    Assignee: Infineon Technologies Austria AG
    Inventors: Armin Willmeroth, Winfried Kaindl, Carolin Tolksdorf, Anton Mauder, Holger Kapels, Gerald Deboy, Franz Hirler
  • Patent number: 7973359
    Abstract: A semiconductor device with a charge carrier compensation structure. In one embodiment, the semiconductor device has a central cell field with a gate and source structure. At least one bond contact area is electrically coupled to the gate structure or the source structure. A capacitance-increasing field plate is electrically coupled to at least one of the near-surface bond contact areas.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: July 5, 2011
    Assignee: Infineon Technologies Austria AG
    Inventors: Franz Hirler, Armin Willmeroth, Anton Mauder, Gerald Deboy, Holger Kapels, Carolin Tolksdorf, Frank Pfirsch
  • Publication number: 20110109283
    Abstract: A system and method for controlling a converter. One embodiment provides the cyclic actuation of a first switching element, used for applying an input voltage to an inductive storage element. A second switching element is used as a first rectifier element in a rectifier arrangement, in a step-up converter. An actuating circuit is provided for the first and second switching elements.
    Type: Application
    Filed: November 9, 2010
    Publication date: May 12, 2011
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Holger Kapels, Gerald Deboy
  • Patent number: 7915879
    Abstract: A switching converter including a rectifier element with nonlinear capacitance. One embodiment provides a switching element configured to be driven in the on state and in the off state. A first capacitive element is between the load path terminals of the switching element and has a nonlinear capacitance characteristic curve dependent on a voltage between the load path connections. A rectifier element is coupled between the inductive storage element and the capacitive storage element such that it enables a current flow between the inductive storage element and the capacitive storage element when the switching element is driven in the off state. A second capacitive element is between the load path terminals of the rectifier element and has a nonlinear capacitance characteristic curve dependent on a voltage between the load path connections.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: March 29, 2011
    Assignee: Infineon Technologies Austria AG
    Inventors: Holger Kapels, Gerald Deboy