Fan Controller I2c

Design and parts selection optocouplers opto were initially chosen to provide isolation between the psoc digital lines and the dc fan during testingthe two signals connected to the fan are the tacho feedback psoc input and the program control line speed psoc output.

Window greenhouse fan. I2c fan speed control pdf format. Speedfan works fine with. Auto temperature fan mode software rpm mode and software dcy mode.

With the wide selection of temperature sensors and eeprom devices that can all be interconnected using only two lines there is a strong advantage to use this interface. Speedfan can find almost any hardware monitor chip connected to the 2 wire smbus system management bus a subset of the i2c bus serial interface and to the isa bus. Automatic closed loop fan control saves system power by operating the fans at the lowest possible speeds.

Analog devices fan speed controllers provide all the functionality necessary for a power management system to regulate the speed of a fan via a 2 wire smbusi2c interface. It is generally clear why the i2c bus has been adapted as the standard format for management communications within the telecom chassis. The max31785 is a closed loop multichannel fan con troller.

For systems with i2c the cirrus 6 offers options to adjust temperature control and alarm parameters or directly control fan speed. Psoc4 dc fan controller with i2c. Auto temperature fan mode is an intelligent closed loop control that optimizes fan speed according to user defined parameters.

Maxims fan controller ics accurately monitor and control fan speed and offer additional benefits such as temperature sensing voltage monitoring and gpios. Pwm fan controller ics and linear fan controller ics feature ramp rate control spin up control close loop control i2c alerts integrated temperature sensors and lookup table for temperature products applications tools and software support and training order now about. Factory customization available for orders as low as 50 pieces.

Added benefits of slower fan speeds include lower audible noise longer fan life and reduced system maintenance. Each mode controls the fan speed by changing the duty cycle of a pwm output. The max31790 is available in a 28 pin tqfn package and operates over the.

For other off the shelf dc fan controls visit smartfan dc. Based on a user programmable lookup. Accurate fan speed control enhances overall system performance in applications such as servers telecomnetworking and video projectors.

Fan speeds are regulated per a systems required temperature profile and results in lower fan power consumption longer battery run time and lower acoustical generated noise vs. The tacho feedback from the fan is an open collector output meaning than only an on. For tips on integrating i2c for fan tray control check out i2c design tips.