Title :
Intelligent thermal management using brushless DC fans-implementing reliable, full-featured, and cost-effective systems for cooling and thermal supervision
Author :
Alfano, Don ; Judkins, Jim
Author_Institution :
TelCom Semicond., Mountain View, CA, USA
Abstract :
Although BDC fans are superior to conventional fans, they are still less than optimum solutions. Because they are electromechanical devices, BDC fans do not achieve the same level of reliability as the system electronics they protect. BDC fan failure commonly results from wear-out mechanisms (primarily fan bearing failures), physical damage, or blockage by foreign objects; or electrical failure. Like all air moving devices, BDC fans generate acoustic noise, a growing concern given the number of electronic systems introduced to the home and workplace. These issues can be minimized by adding BDC fan management circuitry to operate the fan only as necessary to maintain system temperature within limits
Keywords :
brushless DC motors; cooling; noise abatement; reliability; temperature sensors; velocity control; BDC fans; acoustic noise; bearing failures; brushless DC fans; cooling; cost-effective systems; fan management circuitry; intelligent thermal management; physical damage; reliability; system temperature; thermal supervision; wear-out mechanisms; Acoustic measurements; Acoustic noise; Circuits; Fans; Power system management; Protection; Temperature measurement; Temperature sensors; Thermal management; Velocity control;
Conference_Titel :
Wescon/98
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-5078-2
DOI :
10.1109/WESCON.1998.716438