Patents by Inventor Dirk Ahlers

Dirk Ahlers 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: 20190109226
    Abstract: An alternator assembly includes an input terminal configured to input an alternating voltage, an output terminal configured to output a rectified voltage, and a gated diode arranged in a load path between the input terminal and the output terminal.
    Type: Application
    Filed: November 27, 2018
    Publication date: April 11, 2019
    Inventors: Dirk Ahlers, Markus Zundel, Dietrich Bonart, Ludger Borucki
  • Patent number: 10186508
    Abstract: A semiconductor device of an embodiment includes a transistor device in a semiconductor die including a semiconductor body. The transistor device includes transistor cells connected in parallel and covering at least 80% of an overall active area at a first surface of the semiconductor body. The semiconductor device further includes a control terminal contact area at the first surface electrically connected to a control electrode of each of the transistor cells. A first load terminal contact area at the first surface electrically connected to a first load terminal region of each of the transistor cells. The semiconductor device further includes a resistor in the semiconductor die and electrically coupled between the control terminal contact area and the first load terminal contact area.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: January 22, 2019
    Assignee: Infineon Technologies AG
    Inventors: Dirk Ahlers, Markus Zundel, Peter Brandl, Kurt Matoy, Thomas Ostermann
  • Publication number: 20180342447
    Abstract: A semiconductor package includes a leadframe, a first transistor chip connected to a first island of the leadframe in a drain-down configuration, and a second transistor chip connected to a second island of the leadframe in the same drain-down configuration as the first transistor chip. The first and the second islands of the leadframe are mutually electrically isolated from one another. The first island includes an extension which extends beyond a perimeter of the first transistor chip in a direction towards the second island and overlaps the second transistor chip. The first transistor chip and the second transistor chip are electrically interconnected with one another via the extension of the first island and a first electric connection element electrically connecting the extension to the second transistor chip to form a half bridge circuit.
    Type: Application
    Filed: May 21, 2018
    Publication date: November 29, 2018
    Inventors: Dirk Ahlers, Gilles Delarozee, Daniel Schleisser, Christopher Spielman, Thomas Stoek
  • Patent number: 9978672
    Abstract: A package comprising an at least partially electrically conductive chip carrier, a first transistor chip comprising a first connection terminal, a second connection terminal and a control terminal, and a second transistor chip comprising a first connection terminal, a second connection terminal and a control terminal, wherein the first transistor chip and the second transistor chip are connected to form a half bridge, and wherein the second connection terminal of the first transistor chip is electrically coupled with the first connection terminal of the second transistor chip by a bar section of the chip carrier extending between an exterior edge region of the first transistor chip and an exterior edge region of the second transistor chip and maintaining a gap laterally spacing the first transistor chip with regard to the second transistor chip.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: May 22, 2018
    Assignee: Infineon Technologies AG
    Inventors: Dirk Ahlers, Gilles Delarozee, Daniel Schleisser, Christopher Spielman, Thomas Stoek
  • Publication number: 20180114788
    Abstract: A semiconductor device of an embodiment includes a transistor device in a semiconductor die including a semiconductor body. The transistor device includes transistor cells connected in parallel and covering at least 80% of an overall active area at a first surface of the semiconductor body. The semiconductor device further includes a control terminal contact area at the first surface electrically connected to a control electrode of each of the transistor cells. A first load terminal contact area at the first surface electrically connected to a first load terminal region of each of the transistor cells. The semiconductor device further includes a resistor in the semiconductor die and electrically coupled between the control terminal contact area and the first load terminal contact area.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 26, 2018
    Inventors: Dirk Ahlers, Markus Zundel, Peter Brandl, Kurt Matoy, Thomas Ostermann
  • Patent number: 9881853
    Abstract: A semiconductor package includes a substrate, a first transistor die secured to the substrate and a second transistor die secured to the substrate. The first transistor die has a source terminal at a bottom side of the first transistor die which faces the substrate and a drain terminal and a gate terminal at a top side of the first transistor die which faces away from the substrate. The second transistor die has a drain terminal at a bottom side of the second transistor die which faces the substrate and a source terminal and a gate terminal at a top side of the second transistor die which faces away from the substrate. The package also includes a common electrical connection between the drain terminal of the first transistor die and the source terminal of the second transistor die.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: January 30, 2018
    Assignee: Infineon Technologies AG
    Inventors: Dirk Ahlers, Markus Dinkel
  • Publication number: 20170287820
    Abstract: A semiconductor package includes a substrate, a first transistor die secured to the substrate and a second transistor die secured to the substrate. The first transistor die has a source terminal at a bottom side of the first transistor die which faces the substrate and a drain terminal and a gate terminal at a top side of the first transistor die which faces away from the substrate. The second transistor die has a drain terminal at a bottom side of the second transistor die which faces the substrate and a source terminal and a gate terminal at a top side of the second transistor die which faces away from the substrate. The package also includes a common electrical connection between the drain terminal of the first transistor die and the source terminal of the second transistor die.
    Type: Application
    Filed: April 4, 2016
    Publication date: October 5, 2017
    Inventors: Dirk Ahlers, Markus Dinkel
  • Patent number: 9660550
    Abstract: A generator device for the voltage supply of a motor vehicle is equipped with at least one rectifying element for rectifying an alternating voltage provided by a generator. The rectifying element has an n-channel MOS field-effect transistor in which the gate, the body area, and the source area are electrically fixedly connected to one another and in which the drain area is used as a cathode.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: May 23, 2017
    Assignees: Robert Bosch GmbH, Infineon Technologies AG
    Inventors: Richard Spitz, Alfred Goerlach, Carolin Tolksdorf, Dirk Ahlers, Dietrich Bonart
  • Publication number: 20170141105
    Abstract: A semiconductor device includes a first transistor and a second transistor in a semiconductor substrate. The first transistor includes a first drain contact electrically connected to a first drain region, the first drain contact including a first drain contact portion and a second drain contact portion. The first drain contact portion includes a drain conductive material in direct contact with the first drain region. The second transistor includes a second source contact electrically connected to a second source region. The second source contact includes a first source contact portion and a second source contact portion. The first source contact portion includes a source conductive material in direct contact with the second source region.
    Type: Application
    Filed: November 15, 2016
    Publication date: May 18, 2017
    Applicant: Infineon Technologies AG
    Inventors: Andreas MEISER, Dirk AHLERS, Till SCHLOESSER
  • Publication number: 20160233330
    Abstract: A gated diode in a press-fit housing includes a base configured to be press-fit into an opening of a diode carrier plate and including a pedestal portion with a first flat surface, and a head wire including a head portion with a second flat surface and a wire portion. The base and the head wire form parts of the press-fit housing. The gated diode in the press-fit housing further includes a semiconductor die, a first solder layer engaging and electrically connecting the semiconductor die with the first flat surface of the base, and a second solder layer engaging and electrically connecting the semiconductor die with the second flat surface of the head wire.
    Type: Application
    Filed: April 19, 2016
    Publication date: August 11, 2016
    Inventors: Dirk Ahlers, Markus Zundel, Dietrich Bonart, Ludger Borucki
  • Publication number: 20160126197
    Abstract: A semiconductor device includes a semiconductor chip having a first main surface and a second main surface. A chip electrode is disposed on the first main surface. The chip electrode includes a first metal layer and wherein the first metal layer is arranged between the semiconductor chip and the second metal layer.
    Type: Application
    Filed: November 4, 2015
    Publication date: May 5, 2016
    Applicant: Infineon Technologies AG
    Inventors: Kurt Matoy, Dirk Ahlers, Ulrike Fastner, Petra Fischer, Karl-Heinz Gasser, Stephan Henneck, Stefan Krivec, Florian Weilnboeck
  • Patent number: 9324625
    Abstract: A gated diode may include source zones and a drain zone which are both of a first conductivity type. The source zones directly adjoin a first surface of a semiconductor die and the drain zone directly adjoins an opposite second surface of the semiconductor die. The drain zone includes a drift zone formed in an epitaxial layer of the semiconductor die. Base zones of a second conductivity type, which is the opposite of the first conductivity type, are provided between the drain zones and the source zones. The drift zone further includes adjustment zones directly adjoining a base zone and arranged between the respective base zone and the second surface, respectively. A net dopant concentration in the adjustment zone is at least twice a net dopant concentration in the second sub-zone. The adjustment zones precisely define the reverse breakdown voltage.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 26, 2016
    Assignee: Infineon Technologies AG
    Inventors: Dirk Ahlers, Markus Zundel, Dietrich Bonart, Ludger Borucki
  • Publication number: 20160072376
    Abstract: A rectifying device includes a power transistor, a gate control circuit and a capacitor structure arranged on a single semiconductor die. The power transistor includes a source or emitter terminal connected to a first terminal of the rectifying device, a drain or collector terminal connected to a second terminal of the rectifying device, and a gate. The gate control circuit is operable to control a gate voltage at the gate of the power transistor based on at least one parameter relating to at least one of a voltage and a current between the first terminal and the second terminal.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 10, 2016
    Inventors: Dirk Ahlers, Frank Auer, Herbert Gietler, Michael Lenz
  • Publication number: 20130320915
    Abstract: A gated diode may include source zones and a drain zone which are both of a first conductivity type. The source zones directly adjoin a first surface of a semiconductor die and the drain zone directly adjoins an opposite second surface of the semiconductor die. The drain zone includes a drift zone formed in an epitaxial layer of the semiconductor die. Base zones of a second conductivity type, which is the opposite of the first conductivity type, are provided between the drain zones and the source zones. The drift zone further includes adjustment zones directly adjoining a base zone and arranged between the respective base zone and the second surface, respectively. A net dopant concentration in the adjustment zone is at least twice a net dopant concentration in the second sub-zone. The adjustment zones precisely define the reverse breakdown voltage.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Dirk Ahlers, Markus Zundel, Dietrich Bonart, Ludger Borucki
  • Patent number: 7332788
    Abstract: The invention relates to a semiconductor power device with charge compensation structure and monolithic integrated circuit, and method for fabricating it. In the case of this semiconductor power device, zones (6) in charge compensation cells (27) that are arranged vertically and doped complimentarily to the semiconductor chip volume (5) are arranged in the entire chip volume, the complimentarily doped zones (6) extending right into surface regions (11) of the semiconductor power elements (7) and not projecting into surface regions (12) of semiconductor surface elements (1).
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: February 19, 2008
    Assignee: Infineon Technologies AG
    Inventors: Dirk Ahlers, Miguel Cuadron Marion, Uwe Wahl, Armin Willmeroth
  • Patent number: 7193293
    Abstract: A semiconductor component, which functions according to the principle of charge carrier compensation, has incompletely ionized dopants that are additionally provided in a semiconductor body of the semiconductor component. When a reverse voltage is applied, the degree of compensation changes as a function of time and the breakdown voltage of the semiconductor component increases in a manner governed by the degree of compensation. The invention furthermore relates to a circuit configuration and to a method for doping a compensation layer according to the invention.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: March 20, 2007
    Assignee: Infineon Technologies AG
    Inventors: Hans Weber, Dirk Ahlers, Gerald Deboy
  • Patent number: 7038272
    Abstract: In a method for forming a channel zone in field-effect transistors, a polysilicon layer is patterned above the channel zone to be formed. The polysilicon layer serves as a mask substrate for the subsequent doping of the channel zone. The expedient patterning of the polysilicon layer with holes in a gate region and pillars in a source region enables the channel zone to be doped more lightly. In another embodiment, the novel method is used for a channel width shading of a PMOS transistor cell.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: May 2, 2006
    Assignee: Infineon Technologies AG
    Inventors: Hans Weber, Dirk Ahlers, Uwe Wahl, Jenö Tihanyi, Armin Willmeroth
  • Patent number: 6960798
    Abstract: A semiconductor component has a semiconductor body comprising a blocking pn junction, a source zone of a first conductivity type connected to a first electrode and bordering on a zone forming the blocking pn junction of a second conductivity type complementary to the first conductivity type, and a drain zone of the first conductivity type connected to a second electrode. The side of the zone of the second conductivity type facing the drain zone forms a first surface, and in the region between the first surface and a second surface located between the first surface and the drain zone, comprises areas of the first and second conductivity type nested in one another. The second surface is positioned at a distance from the drain zone such that the areas of the first and second conductivity type nested in each other do not reach the drain zone.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: November 1, 2005
    Assignee: Infineon Technologies AG
    Inventors: Gerald Deboy, Dirk Ahlers, Helmut Strack, Michael Rueb, Hans Martin Weber
  • Patent number: 6894329
    Abstract: A semiconductor component has a semiconductor body comprising blocking pn junction, a source zone of a first conductivity type connected to a first electrode and bordering on a zone forming the blocking pn junction of a second conductivity type complementary to the first conductivity type, and a drain zone of the first conductivity type connected to a second electrode. The side of the zone of the second conductivity type facing the drain zone forms a first surface, and in the region between the first surface and a second surface located between the first surface and the drain zone, comprises areas of the first and second conductivity type nested in one another. The second surface coincides with the surface of the drain zone facing the source zone, such that the regions of the first and second conductivity type nested inside each other reach the drain zone.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: May 17, 2005
    Assignee: Infineon Technologies AG
    Inventors: Gerald Deboy, Dirk Ahlers, Helmut Strack, Michael Rueb, Hans Martin Weber
  • Publication number: 20050045922
    Abstract: The invention relates to a semiconductor power device with charge compensation structure and monolithic integrated circuit, and method for fabricating it. In the case of this semiconductor power device, zones (6) in charge compensation cells (27) that are arranged vertically and doped complementarily to the semiconductor chip volume (5) are arranged in the entire chip volume, the complementarily doped zones (6) extending right into surface regions (11) of the semiconductor power elements (7) and not projecting into surface regions (12) of semiconductor surface elements (1).
    Type: Application
    Filed: August 26, 2004
    Publication date: March 3, 2005
    Inventors: Dirk Ahlers, Miguel Marion, Uwe Wahl, Armin Willmeroth