ADM00902 Demonstration Board for EMC2103 User’s Guide
DS50002905A-page 24
2019 Microchip Technology Inc.
In Constant mode, the user can select only one temperature channel for monitoring and
the fan speed will be adjusted as follows:
• If the temperature is below the target temperature value, the fan is running at the
minimum RPM value summed with the offset value.
• When the temperature exceeds the target value, the fan speed is adjusted, in
order to keep the temperature at the target limit, with a hysteresis of ±0.3°C value,
which can be modified from the Advanced Settings menu (
). This
outcome is dependent on the cooling solution (appropriate heat sink to dissipate
the heat).
FIGURE 3-10:
Demo Options Fan – Constant Mode.
In Manual mode, if the user switches from another operating mode, the algorithm takes
the fan’s RPM last value from the previous operating mode and adjusts the fields in the
Manual mode accordingly. If the fan is in the OFF state, the
Off
button will be checked
and the other fields will be disabled. If the fan is in the ON state, the
Off
button will be
unchecked and the other two fields will adjust to the RPM value. The fan RPM value
can then be adjusted, from minimum to maximum, by using the slider or by directly
writing in the designated “RPM” field. The fan can be stopped by checking the Fan Off
checkbox.
FIGURE 3-11:
Demo Options Fan – Manual Mode.
In Look-up Table mode, all the other demo options are disabled and LUT registers are
locked. In this mode, the fan RPM value will be changed according to the temperatures
set in the look-up table.
FIGURE 3-12:
Demo Options Fan – Look-up Table.
