Autofan combination of zones

A method for controlling a fan, comprising:

• receiving a first set of parameters corresponding to a first temperature zone;
• receiving a second set of parameters corresponding to a second temperature zone;
• generating a single PWM output based on the first set of parameters and the second set of parameters;
• and
• applying the single PWM output to a motor configured to power the fan, thereby controlling the fan.

A method for calculating value of a single PWM output used for powering a fan, the method comprising:

• receiving first PWM duty cycle information corresponding to a first temperature zone;
• receiving second PWM duty cycle information corresponding to a second temperature zone;
• and
• generating the value of the single PWM output based on a combination of the first PWM duty cycle information and the second PWM duty cycle information.

An autofan system comprising:

• a first data selection unit (DSU) configured to receive sensor data from a plurality of zones;
• a second DSU configured to receive zone parameter data for the plurality of zones;
• a third DSU configured to receive PWM parameter data for a plurality of PWM outputs;
• a fourth DSU configured to provide the plurality of PWM outputs;
• and
• a PWM computation logic block (PCLB) coupled to the first, second, third and fourth DSU;
• wherein the first DSU is operable to provide respective sensor data received from two or more of the plurality of zones to the PCLB for calculating a corresponding single PWM value;
• wherein the second DSU is operable to provide respective zone parameter data received for two or more of the plurality of zones to the PCLB for calculating the corresponding single PWM value;
• and
• wherein the PCLB is operable to calculate the corresponding single PWM value based on the respective sensor data received from the first DSU and the respective zone parameter data received from the second DSU.

A system for controlling at least one fan, the system comprising:

• a first plurality of inputs configured to receive sensor data from each of a plurality of zones in a computer system;
• and
• a logic block coupled to the first plurality of inputs, wherein the logic block is configured to receive the sensor data from each of the plurality of zones, wherein the logic block is operable to calculate a single control value based on the sensor data from two or more of the plurality of zones;
• wherein the logic block is further operable to provide a control signal based on the single control value to a fan motor configured to power the at least one fan, thereby controlling the at least one fan.