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F-710-017, V1.2 TCM 330 / TCM 330U User Manual | v1.1 | August 2016 | Page 13/62
USER MANUAL V1.1
TCM 330 / TCM 330U
Wireless LED Controller Module
3.5.2
0–10V output driver
TCM 330 provides a PWM output with a frequency of 80 kHz.
The PWM output is configured to be active high, i.e. a duty cycle of 100% will result in the
output being permanently set to high.
Conversion of the PWM output signal to a 0-10V driver signal is typically done by using a
low pass filter followed by a non-inverting amplifier.
The gain of the amplifier must be chosen according to the IO voltage of TCM 330 such that
100 % duty cycle at the TCM 330 PWM output will result in 10V output voltage at the driv-
er.
The output of the 0-10V driver should be properly ESD protected if it is exposed to user
contact.
The illustration below shows an example of such 0-10V output driver.
Both a minimum and a maximum output voltage level can be configured in TCM 330 by
means of setting a minimum and maximum duty cycle accordingly.
This feature prevents flickering at very low output voltage levels and can conserve energy
in systems where the maximum available LED brightness is not required.