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. 23, 1998
Filed:
May. 30, 1996
Arthur J Edwards, Hoffman Estates, IL (US);
Nicholas Lee, Toulouse, FR;
Motorola Inc., Schaumburg, IL (US);
Abstract
A programmable amplitude ramp generator for an automotive voltage regulator includes a selection circuit (405) with an output (406) that provides a selection signal (407) with a plurality of states. A voltage reference circuit (401, 403) includes an output (410) that provides a different reference voltage dependent on each of the plurality of states of the selection signal (407). A resistive device (411) has an input (414) coupled to the output (410) of the voltage reference (401, 403), and an output (416). A gateable multi-resistive device (413) has an output (415) coupled to the output 416 of the resistive device 411. A coupleable resistive device (409) has an input (419) coupled to the output (410) of the voltage reference circuit (401, 403) and an output (421) coupleable to the output (416) of the resistive device (411) responsive to receipt of one of the plurality of states of the selection signal (407). A regulator load driving circuit (113, 109, 107, 105, 124) is coupled to the output () of the voltage reference circuit (401, 403). The described structure provides a multi-range operating capability for the automotive voltage regulator.