Data Sheet

Frequency

Absolute maximum output frequency with current up to 0.5A output per channel - 100kHz

Maximum frequency at full power using additional heat sinks and/or fan - 25kHz

Maximum safe output frequency at full power (without active cooling) - 4kHz

Recommended output frequency for long-term work up to - 2kHz

Duty cycle vs. frequency

Possible duty cycle ranges for pulse-width modulation:

● 1...98% @ 0…..2kHz

● 6...90% @ 2…10kHz

● 10...80% @ 10…20kHz

● 25...55% @ 20…50kHz

● only ~45% @ 50..100kHz

Note that after reaching the duty cycle limits, the outputs will always be at 0% or 100%. For

example, in the case of 50 kHz, the 0%...~ 24% outputs will be completely desaturated, and

~56%...100% will be fully saturated. This is because these limits are no longer transmitting the

frequency but only completely deactivate or fully activate the outputs.

The rising and falling fronts have a duration of ~ 2μs. The front times are measured at 24V and

100 W halogen bulb loads at 90% duty cycle and 4.4kHz operating frequency.