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:
Jun. 16, 1998
Filed:
Aug. 27, 1996
Akira Yamashita, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A power IC having at least a level shifter for changing the level of an input signal, a high-side driver circuit for driving a predetermined load in accordance with a level changed by the level shifter, the high-side driver circuit being in a floating state, and a reverse current preventing diode for disconnecting a current path from the ground of the level shifter to the reference potential of the high-side driver circuit. The high-side driver circuit and reverse current preventing diode are respectively dielectrically isolated by a dielectric member to prevent insufficient element isolation to be caused by bias conditions. The predetermined reference potential to be connected to an inductive load or the like in the high-side driver circuit can be set to a negative potential. The electrical energy stored in the inductive load or the like can be extracted out and attenuated at high speed via the reference potential set to the negative potential to thereby realize a high speed operation.