EE310 Integrated Circuits Seminar REMINDER
guerra at par.stanford.edu
Mon Nov 26 08:46:35 PST 2001
EE310 Integrated Circuits Technology and Design Seminar
"A Cool Cooling Fan Controller"
Tuesday, November 27, 2001
Building 380, Room 380X
Controlling the speed of cooling fans in servers, desktop computers and even
notebooks increases the fan's lifetime, reduces audible noise and lowers power
consumption. This presentation deals with design considerations for a fan
controller that linearly regulates and monitors the fan's speed. On a system
level, the feedback loop around the fan will be discussed and it will be shown
that a phase-locked loop design does not work for this application. On a
transistor level, several of the analog sub-circuits (opamps, comparators, a
simple 10-bit DAC) will be analyzed.
More information about the labmembers