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. 16, 2020
Filed:
Jun. 24, 2014
Applicants:
Nitin Kumar, Beverly, MA (US);
Markus Ziegler, Watertown, MA (US);
Inventors:
Nitin Kumar, Beverly, MA (US);
Markus Ziegler, Watertown, MA (US);
Assignee:
OSRAM SYLVANIA Inc., Wilmington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/32 (2007.01); H02M 1/36 (2007.01); H02M 3/337 (2006.01); H05B 45/50 (2020.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/32 (2013.01); H02M 1/36 (2013.01); H02M 3/3376 (2013.01); H05B 45/50 (2020.01); H02M 2001/0058 (2013.01); Y02B 20/348 (2013.01); Y02B 70/1491 (2013.01);
Abstract
A no load detection and shutdown circuit in an isolated driver is provided. A no load condition is detected by primary side evaluation of a reflected voltage. If a determination is made that a no load condition is present, the no load detection circuit signals a half bridge driver of the driver to cease oscillations, shutting down the driver.