StealthChop+ is an advanced ADI Trinamic voltage mode pulse-width modulation (PWM) chopper designed for ultra-quiet, low-vibration stepper motor operation. Unlike conventional current-mode choppers (which inherently introduce current ripple, audible noise, and torque variation), StealthChop+ regulates motor voltage using a feed forward approach while maintaining precise electrical angle alignment.
The result is near silent motion, high microstepping linearity, and active suppression of mid-range mechanical resonances.
In infusion pump applications, these characteristics translate directly into smoother plunger motion, reduced flow pulsation, and significantly quieter operation—key contributors to dosing accuracy and patient comfort.
StealthChop+ also reduces switching losses, improving overall efficiency, and supports flexible deceleration behavior that helps designers safely manage regenerated energy and simplify overvoltage protection during rapid stops.
By integrating sensorless load measurement and resonance damping, StealthChop+ delivers premium motion quality with no audible standby noise, even during long dwell periods common in low-flow infusion profiles.
Applicable Part Numbers
| Digikey Part Number | Manufacturer Part Number |
|---|---|
| 175-TMC5262AFV±ND | TMC5262AFV+ |
| 175-TMC5262AFV+TTR-ND,175-TMC5262AFV+TCT-ND,175-TMC5262AFV+TDKR-ND | TMC5262AFV+T |
| 175-TMC5262-EVKIT-ND | TMC5262-EVKIT |