TMC2225 DATASHEET (Rev. 1.15 / 2023-FEB-16)
37
Figure 6.3 Scope shot: good setting for PWM_REG
Figure 6.4 Scope shot: too small setting for PWM_REG during AT#2
Motor Current
PWM scale
Motor Velocity
255
PWM reaches max. amplitude
Nominal Current
(sine wave RMS)
RMS current constant
(IRUN)
Stand still
PWM scale PWM_OFS_(AUTO) ok
0
0
Current may drop due
to high velocity
IHOLD
PWM_OFS_(AUTO) ok
Time
Figure 6.5 Successfully determined PWM_GRAD(_AUTO) and PWM_OFS(_AUTO)
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