The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2018
Filed:
May. 27, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Yosuke Osanai, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
There is provided a semiconductor apparatus comprising: a switching element including a main element and a sense element; a main diode whose cathode is connected to a first main electrode of the main element and whose anode is connected to a second main electrode of the main element; a sense diode whose cathode is connected to a first main electrode of the sense element and whose anode is connected to a second main electrode of the sense element; and a deterioration detection circuit configured to apply a voltage to a sense node, and detects a deterioration of the switching element or the main diode based on a forward current flowing in the sense diode, being detected while the voltage is applied, the voltage being applied during an OFF period of switching element, wherein the sense diode is disposed for detecting current flowing through the main diode.