ADM00879 Fan Controller Demo Board

Microchip's ADM00879 fan controller demo board provides an example of a 12 V fan control application using the EMC2305 fan controller and EMC1438 temperature sensor. Five fan channels, two on-board temperature sensors, and six remote temperature sensor inputs are available.

The demo GUI has options to manually set up all the parameters for the thermal sensor and fan controller and provide a fully automatic temperature control interface where any fan channel can be linked to any temperature channel.

The EMC1438 is a high-accuracy, low-cost System Management Bus (SMBus) temperature sensor. Advanced features such as resistance error correction (REC), beta compensation (to CPU diodes requiring the BJT or transistor model), and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications.

The EMC2305 is an SMBus-compliant fan controller with up to five independently controlled PWM fan drivers. Each fan driver is controlled by a programmable frequency PWM driver and fan speed control algorithm that operates in either a closed-loop fashion or as a directly PWM-controlled device.

Features

• 5 fan channels with RPM control capable of driving 3 or 4 wire fans
• 2 on-board temperature sensors
• 6 remote temperature sensor connections