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:
Jul. 08, 2014
Filed:
Apr. 14, 2009
Akihiro Suzuki, Chiyoda-ku, JP;
Hitoshi Kidokoro, Chiyoda-ku, JP;
Toshiki Koshimae, Chiyoda-ku, JP;
Hiroshi Kurushima, Chiyoda-ku, JP;
Masato Matsubara, Chiyoda-ku, JP;
Akihiro Suzuki, Chiyoda-ku, JP;
Hitoshi Kidokoro, Chiyoda-ku, JP;
Toshiki Koshimae, Chiyoda-ku, JP;
Hiroshi Kurushima, Chiyoda-ku, JP;
Masato Matsubara, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Included are: a circuit-specific printed circuit board to be a circuit board that generates a power supply voltage; a first diode that is connected in antiparallel with the transistor and is configured so as to be capable of passing a current through a path to circumvent the transistor; a second diode that is connected in series to the transistor and prevents a current flow through a parasitic diode formed on the transistor; a protection circuit that is connected in parallel with the second diode to protect the second diode from a high voltage breakdown, and is formed on a substrate different from the circuit-specific printed circuit board; and a cooling unit that is joined to the protection circuit outside the circuit-specific printed circuit board and cools the protection circuit.