Fan Control Ensures Continuous System Cooling


Posted on Mar 17, 2013

Figure 1 shows a block diagram for a fan speed control system using the LTC1840. The LTC1840 contains two current DACs used to gain full control over fan speed. The scaled currents individually adjust the fan-driving output voltage of a switching regulator.



Linear Technologys LTC®1840 is a dual fan speed controller for high availability servers and other rack-based network and telecom equipment. The LTC1840 offers advanced control and monitoring capabilities, accessed via an I2CTM and SMBus co




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