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:
Oct. 20, 1998
Filed:
May. 30, 1997
Hiromichi Agata, Anjo, JP;
Yoshihiko Minatani, Kariya, JP;
Akira Suzuki, Obu, JP;
Yutaka Hotta, Chiryu, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
A motor drive device including a substrate, a control unit packaged over the substrate for generating a pulse width modulation signal; insulation means packaged over the substrate, a gate drive circuit packaged over the substrate and connected through the insulation means with the control unit for generating a transistor drive signal in response to the pulse width modulation signal coming from the control unit, and an inverter including a plurality of transistors for generating a phase current by turning ON/OFF the transistors in response to the transistor drive signal coming from the gate driver circuit. A wiring pattern and a substrate ground are formed at the side of the substrate closer to the control unit. Only the wiring pattern is formed at the side of the substrate closer to the gate drive circuit.