Active cooling – OSRAM OPTOTRONIC Constant current LED power supplies with 3DIM User Manual
Page 47
47
LEDset APPLICATIONS
3.4.2. Active cooling
Future generations of the LEDset interface might have a
higher power capability via the +12Vset auxiliary supply.
It will then be possible to drive an active cooling system
such as a fan (e.g. when high-power LED modules require
forced cooling). The following block diagram shows such
an application.
The power supplied by the +12Vset auxiliary supply and thus
the cooling capability of the fan can be regulated by an ex-
ternal electronic control circuit, with the LED module temper-
ature being used as control signal. This feature can be easily
and fl exibly integrated with a small MCU on the LED module.
Please refer to the datasheet of the LEDset product and
verify that the current capability of the +12Vset auxiliary
supply matches the selected fan requirements.
Figure 49: +12Vset auxiliary supply – active cooling system.
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