StealthChop™

StealthChop™ delivers exceptionally quiet stepper motor performance. Motors operating at low speeds exhibit a phenomenon known as magnetostriction, which causes audible high-pitch noise.

Based on the current feedback, the chip regulates voltage modulation to minimize current fluctuation. StealthChop™ applications have achieved noise levels of 10 dB and more below classical current control.

Trinamic has improved voltage mode operation and combined it with current control. This allows the system to self-adjust to motor and operating voltage. Motor drivers equipped with StealthChop™ combine optimal power consumption with current waveforms that closely replicate analog waveforms at no additional cost.

The result is whisper quiet motion for applications like 3D printing, desktop manufacturing and personal medical devices where audible noise is unacceptable.