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:
Mar. 14, 1995
Filed:
Feb. 26, 1993
Johannes P Bahlmann, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An integrated circuit having a unit for controlling a load of an inductive nature, which unit includes a first output transistor having a first control electrode and a first main current path, a second output transistor having a second control electrode and a second main current path, a control stage coupled to the control electrodes and adapted to control the output transistors. An output terminal is coupled between the main current paths and adapted to connect the load. In order to limit a voltage transient appearing on the output terminal, as a result of an interruption of a current flowing through the load, the control stage is coupled to the output terminal and is adapted to detect a first voltage transient on the output terminal, to turn on the second transistor in response to the first voltage transient, to detect a second voltage transient on the output terminal, which second voltage transient is opposed to the first voltage transient, and to turn off the second transistor in response to the second voltage transient.