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. 30, 2002
Filed:
Nov. 06, 2000
Mark N. Sun, Plano, TX (US);
Ericsson, Inc., Richardson, TX (US);
Abstract
A converter with synchronous rectification is driven in such a way so that the reverse currents do not build up and cause damage to or limit the efficiency of the circuit. Negative currents are self-adjusted to a very small percentage of load current, so the converter will not have problems when in parallel with other modules. An auxiliary winding is used to allow an output inductor to drive the secondary side rectifiers thereby limiting their conduction time as reverse currents increase. The primary side conduction times are extended by operation of their anti-diodes so that reverse currents are limited naturally without the use of dedicated load sensing and shutdown circuits.