2134 patents
Page 34 of 107
Utility
Integrated Circuit and Power Supply Circuit
14 Jul 22
An integrated circuit for a power supply circuit configured to generate an output voltage of a target level from an alternating current (AC) voltage.
Yuta ENDO, Takato SUGAWARA
Filed: 29 Mar 22
Utility
Snubber Apparatus and Power Conversion Apparatus
14 Jul 22
Provided is a snubber apparatus comprising: N parallel charge paths, each of which has a positive-side capacitor, a first diode, and a negative-side capacitor sequentially connected in series between a positive-side terminal and a negative-side terminal, and that allows current to flow from the positive-side terminal's side to the negative-side terminal's side; and N+1 parallel discharge paths, each of which has a second diode connected between the negative-side terminal or the negative-side capacitor in the k-th charge path of the N charge paths, and the positive-side capacitor in the (k+1)-th charge path of the N charge paths or the positive-side terminal, and that allows current to flow from the negative-side terminal's side to the positive-side terminal's side via at least one of the negative-side capacitor and the positive-side capacitor, at least one of the charge paths having a plurality of sections are turned and adjacent to each other.
Qichen WANG, Ryuji YAMADA
Filed: 25 Nov 21
Utility
Switching Apparatus and Switching Method
14 Jul 22
Provided is a switching apparatus, including: a first semiconductor switching device of IGBT, and a second semiconductor switching device of a different type from IGBT, which are electrically connected in parallel; and a control unit configured to turn on the second semiconductor switching device before the first semiconductor switching device, wherein a maximum rated current of the second semiconductor switching device is greater than a maximum rated current of the first semiconductor switching device.
Harunobu IKEDA
Filed: 25 Nov 21
Utility
Semiconductor module and manufacturing method therefor
12 Jul 22
A semiconductor module is provided, including: a semiconductor chip having an upper surface electrode and a lower surface electrode opposite to the upper surface electrode; a metal wiring plate electrically connected to the upper surface electrode of the semiconductor chip; and a sheet-like low elastic sheet provided on the metal wiring plate, the low elastic sheet having elastic modulus lower than that of the metal wiring plate.
Takafumi Yamada, Hiromichi Gohara
Filed: 19 Feb 20
Utility
Semiconductor device and method of manufacturing a semiconductor device
12 Jul 22
A semiconductor device having an active region and a voltage withstand region comprises a first semiconductor layer of a first conductive type, a second semiconductor region of a second conductive type, disposed selectively on the front side of the first semiconductor layer, a plurality of first trench contact (TC) sections disposed at a peripheral section of the active region in the second semiconductor region, being apart from one another and extending in a first direction, a second trench contact (TC) disposed at the peripheral section of the active region in the second semiconductor region, extending in the first direction and being further from the voltage withstand region than the plurality of first trench contact sections, an electric conductor layer electrically connecting together the plurality of first TC sections, and a conductive connection region disposed between the first TC sections and second TC section, having a lower resistivity than the second semiconductor region, and electrically connecting the first TC sections and second TC section.
Isamu Sugai
Filed: 21 Feb 20
Utility
Overcurrent sense control of semiconductor device
12 Jul 22
A control device includes a current detecting section that detects a sense current for a current flowing through a semiconductor element; a transient sensing period detecting section that detects a transient sensing period from a transient rising to a transient falling of a detection signal of the sense current, in response to the semiconductor element being turned ON; and a control section that controls the semiconductor element according to a detection result of the transient sensing period, based on the sense current detection signal.
Masashi Akahane
Filed: 23 Apr 19
Utility
Semiconductor module, vehicle, and method of manufacturing semiconductor module
5 Jul 22
There is provided a semiconductor module including: a base for semiconductor cooling; a stacked substrate provided above the base; a semiconductor chip provided above the stacked substrate; a coating layer provided on an upper surface of the semiconductor chip; and a sealing resin for sealing the semiconductor chip, in which the base is in contact with the sealing resin.
Kohei Yamauchi, Tatsuhiko Asai
Filed: 24 Feb 20
Utility
Semiconductor module
5 Jul 22
A semiconductor module includes a substrate on which first, second, and third circuit boards that are electrically isolated from each other are formed; a semiconductor element arranged on the first circuit board; a connecting member that bridges an upper surface electrode of the semiconductor element and the second circuit board so as to electrically connect the upper surface electrode to the second circuit board; a wire that electrically connects the third circuit board to a first electrode that is located outside of where the first, second and third circuit boards are located in a plan view; and a sealing resin that covers and seals the substrate, the semiconductor element, the connecting member, and the wire, wherein the wire is wired from the third circuit board to the first electrode so as to cross the semiconductor element at a vertical position lower than an upper surface of the connecting member.
Hayato Nakano
Filed: 4 Jan 21
Utility
Semiconductor device
5 Jul 22
Provided is a semiconductor device that includes a first conductivity type well region below a gate runner portion, wherein a diode region includes first contact portions, a first conductivity type anode region, and a second conductivity type cathode region; wherein the well region contacts the diode region in the first direction, and when an end of the well region, an end of at least one of first contact portions, and an end of the cathode region that face one another in the first direction are imaginary projected on an upper surface of the semiconductor substrate, a first distance is longer than a second distance, the first distance being a distance between the end of the well region and the end of the cathode region, and the second distance being a distance between the end of the well region and the end of the at least one first contact portion.
Misaki Takahashi, Yuichi Harada, Kouta Yokoyama
Filed: 27 Jan 20
Utility
Semiconductor Package, Resin Molded Product, and Method of Molding Resin Molded Product
30 Jun 22
A semiconductor package includes a flat plate-shaped terminal integrally formed with a housing portion for a semiconductor chip and a rod-shaped terminal pin that penetrates through a through-hole of the plate-shaped terminal.
Kimihiro ASHINO
Filed: 30 Nov 21
Utility
Semiconductor Module, Semiconductor Device and Method for Manufacturing Semiconductor Device
30 Jun 22
A semiconductor module includes a resin case housing a semiconductor element; an insulating layer extending outward from the resin case; and a first external connection terminal extending outward from the resin case, arranged above the insulating layer so as to face the insulting layer, the first external connection terminal having a non-contact portion that is not in contact with the insulating layer in a thickness direction of the insulating layer at a position overlapping the insulating layer in a plan view.
Yuichiro HINATA, Yuma MURATA, Naoyuki KANAI, Ryoichi KATO
Filed: 6 Dec 21
Utility
Semiconductor Device
30 Jun 22
A circuit pattern, which is a second negative electrode wiring, and a horizontally extending area of a circuit pattern, which is a first negative electrode wiring, are connected electrically and mechanically by a vertically extending area of the circuit pattern and wires, which are an inter-negative-electrode wiring.
Masaki TAKAHASHI, Kousuke KOMATSU, Rikihiro MARUYAMA
Filed: 29 Oct 21
Utility
Driving Apparatus
30 Jun 22
Provided is a driving apparatus that drives a switching device, the driving apparatus including a reference potential line, a first switching control unit configured to switch whether to connect a control terminal of the switching device to the reference potential line, a first resistor element arranged in series to the first switching control unit in a path from the control terminal of the switching device to the reference potential line, a first capacitor provided in parallel with the first resistor element in the path from the control terminal of the switching device to the reference potential line, and a discharge control unit configured to control whether to discharge the first capacitor.
Ryoga KIGUCHI, Hiromu TAKUBO
Filed: 25 Oct 21
Utility
Switching Control Circuit and Power Supply Circuit
30 Jun 22
A switching control circuit for controlling a power supply circuit that includes an inductor receiving a rectified voltage corresponding to an AC voltage, and a transistor controlling an inductor current flowing through the inductor.
Ryuji YAMADA
Filed: 26 Oct 21
Utility
Electrophotographic Photoconductor, Method of Manufacturing the Same, and Electrophotographic Equipment
23 Jun 22
Seizo KITAGAWA, Shinjiro SUZUKI, Hiroshi EMORI, Kazuki NEBASHI
Filed: 10 Dec 21
Utility
Semiconductor Device
23 Jun 22
One object is to provide a semiconductor device capable of suppressing forward voltage degradation and loss during turn-on.
Masakazu BABA, Shinsuke HARADA
Filed: 21 Dec 21
Utility
Silicon Carbide Semiconductor Device and Method of Manufacturing Silicon Carbide Semiconductor Device
23 Jun 22
A voltage withstanding structure disposed in an edge termination region is a spatial modulation junction termination extension (JTE) structure formed by a combination of a JTE structure and a field limiting ring (FLR) structure.
Akimasa Kinoshita
Filed: 1 Nov 21
Utility
Switching Control Circuit and Power Factor Correction Circuit
23 Jun 22
A switching control circuit for a power supply circuit that generates an output voltage from an AC voltage.
Ryuji YAMADA, Ryuunosuke ARAUMI
Filed: 28 Oct 21
Utility
Module
16 Jun 22
An electric circuit in which a first switching element and a first diode element are connected in antiparallel to form an upper arm and a second semiconductor element and a second diode element are connected in antiparallel to form a lower arm, and the upper arm and the lower arm are connected in series.
Hideo AMI
Filed: 28 Feb 22
Utility
Semiconductor Device
16 Jun 22
A semiconductor device includes: a well region of a second conductivity-type deposited on a surface layer of a semiconductor layer of a first conductivity-type; a breakdown voltage region of the second conductivity-type arranged to surround the well region and having a lower impurity concentration than the well region; a base region of the first conductivity-type arranged to surround the breakdown voltage region; a carrier supply region of the second conductivity-type arranged on a surface layer of the base region and serving as a level shifter; and a carrier reception region of the level shifter, wherein the carrier reception region is formed of a first universal contact region including a region of the first conductivity-type and a region of the second conductivity-type arranged in contact with each other.
Masaharu YAMAJI
Filed: 27 Oct 21