DCR Current Sensing Method for Adaptive Voltage Positioning in Coupled Inductor Voltage Regulators

Description:

The conventional current sensing method with sensing resistors produces additional losses and decreases the efficiency in the multiphase DC-DC converters with coupled inductors.  A novel lossless current sensing method in multiphase DC-DC converters with coupled inductors is proposed.  With this novel method, the additional loss is saved and the efficiency of the DC-DC converter is increased, which means a longer battery life in battery powered equipments and higher power density and lower cost of an equipment with multiphase DC-DC converters with coupled inductors.  Experiment was conducted to verify the validity of the proposed lossless current sensing method. 
  

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date
Current Sensing in Multiple Coupled Inductors by Time Constant Matching to Leakage Inductance US Utility *United States 11/341,874 7,233,132 1/30/2006 6/19/2007 1/30/2026
Category(s):
Electrical
For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
lchen@vtip.org
Inventors:
Yan Dong
Ming Xu
Fred Lee
Keywords:
© 2017. All Rights Reserved. Powered by Inteum