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:
Jul. 02, 2002
Filed:
Jan. 31, 2001
Applicant:
Inventor:
Kang Li, Windsor, CA;
Assignee:
Yazaki North America, Inc., Canton, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/14 ; H02H 7/122 ;
U.S. Cl.
CPC ...
H02M 1/14 ; H02H 7/122 ;
Abstract
A PWM current control circuit that determines whether a start-up time, during which an decreased current is being drawn, for a load has elapsed and providing a switch that supplies current to the load with a control signal that limits the current being drawn if the start-up time has not elapsed and providing a standard PWM control signal from a microcontroller if the start-up time has not elapsed. Excessive inrush current during the start-up period of the load is avoided while the current is maintained to be within a predetermined range during start-up and after the start-up time has elapsed the control is again turned over to the microcontroller.