LOAD CURRENT SENSING CIRCUIT AND METHOD
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Mar 14, 2013
app pub date -
Jul 18, 2012
filing date -
Jul 28, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A load current sensing circuit for sensing a DC-DC converter load current in a DC-DC converter comprising a high-side power transistor and a low-side power transistor connected in series between supply terminals and having a converter switching node therebetween coupled to an inductor to which a load is to be coupled. A first averaging stage determines a DC voltage component of the PWM signal and a second averaging stage determines a DC component of the voltage signal at the converter switching node. A comparison stage determines a difference voltage between the first averaging stage and the second averaging stage. An impedance replica stage forms a resistance which is proportional to the resistance of the series-connected power transistors. A measuring stage measures a current flowing through the impedance replica stage with the determined difference voltage applied.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully