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:
Aug. 14, 2001
Filed:
May. 25, 2000
Vasil Germanski, Washington, MI (US);
Timothy P Philippart, Royal Oak, MI (US);
Mikhail Zarkhin, West Bloomfield, MI (US);
Mark J Stachew, Fenton, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
It is an object of the present invention to provide an assist circuit for a vehicle controller power supply which requires multiple voltage outputs. The assist circuit allows for the supply of a higher voltage which aids the supply of a lower voltage during transient power up. Once both voltages have achieved a specified level, during transient power up, and other power supply components, such as a linear voltage regulator, have stabilized, the assist circuit effectively switches off, allowing the higher voltage to be supplied by a switching power supply and the lower voltage to be supplied by the linear regulator. The assist circuit is most useful in vehicle controllers which have a current foldback feature, by assisting to supply peak current demands before a current foldback can occur during a transient power up stage.