Projectors, large power supplies, datacom switches and routers,
pose an interesting heat dissipation problem. These applications
consume enough power to prompt a designer to cool off the
electronics with a fan. If the appropriate airflow across the
electronics is equal to or less than six to seven cubic feet per
minute (CFM), a good choice of fan would be the DC brushless
fan. Keeping Power Hungry Circuits Under
Thermal Control
By Bonnie C. Baker, Microchip Technology Inc.
ANALOG DESIGN NOTE ADN001
Introduction
Projectors, large power supplies, datacom switches and routers, For a one-fan circuit, the stand-alone fan controller IC is the
pose an interesting heat dissipation problem. These applications better choice. The stand-alone IC has fault detect circuitry
consume enough power to prompt a designer to cool off the that can notify the system when the fan has failed, so that the
electronics with a fan. If the appropriate airflow across the power consuming part of the system can be shutdown. The
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