Rainbow Electronics MAX34441 - Manual (Page 49)

PMBus 5-Channel Power-Supply Manager
and Intelligent Fan Controller
MAX34441
49
Figure 6. Fan Lookup Table (LUT) Format
FAN SPEED STEP: Fan PWM Duty Cycle or Fan Speed Setting
If bit 6 in FAN_CONFIG_1_2 is set to zero, the FAN SPEED STEP sets the fan PWM duty cycle at each temperature step
breakpoint. The valid duty cycle range is 0 to 100 (inclusive). Any values greater than 100 (decimal) result in 100% PWM
duty cycle being generated, and any values less than 0 (decimal) result in 0% PWM duty cycle.
If bit 6 in FAN_CONFIG_1_2 is set to 1, the FAN SPEED STEP sets the fan target speed (in RPM) at each temperature
step breakpoint. The valid fan speed range is 0 to 32,767 (inclusive).
NORMALIZED TEMPERATURE
(FROM ONE OR MORE TEMP SENSORS)
S0
S1
S2
S3
S4
S5
S6
S7
MAXIMUM
DESIRED FAN
DUTY CYCLE
OR SPEED
FAN PWM DUTY CYCLE
OR
FAN SPEED (IN RPM)
PWM = 0% DUTY CYCLE
T0 T1 T2 T3 T4 T5 T6 T7
THERMAL
HYSTERESIS