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:
May. 05, 2009
Filed:
Jun. 12, 2007
Akio Kojima, Anjo, JP;
Akio Kojima, Anjo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A load break detection circuit for detecting a break in a load connected to an output terminal of an output circuit includes a target voltage generator, a reference voltage generator, and a comparator. The reference voltage generator generates a reference voltage and a command value. When the output terminal is open-circuited, a flyback voltage is applied to the output terminal and the target voltage generator outputs a target voltage equal to the command value to the output terminal. The target voltage generator includes a voltage divider for dividing an output voltage appearing at the output terminal. The comparator compares the divided voltage with the reference voltage and outputs a load break detection signal based on a result of the comparison.