Fixed Frequency Quasi-Resonant Buck and Tap Buck Converters

This invention proposes two novel Buck type converters to achieve no body diode loss for the synchronous rectifier in non-isolated Buck DC/DC converters.  In addition, their top switches can also be achieved soft switching.  All of these features guarantee these circuits suitable for high frequency and low voltage high output current applications,  12V-input VRM in the desktop is the good example to apply this invention.
Patent Information:
App Type Country Serial No. Patent No. File Date Issued Date Patent Status
US Utility *United States 10/603,097 6,989,997 6/25/2003 1/24/2006 Issued
For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
Ming Xu
Fred Lee