TMC8462 Datasheet • Document Revision V1.4 • 2018-May -09
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PWM Value Together with the programmed PWM counter length, the PWM values determine the PWM
duty cycle. The PWM duty cycle is individually programmable for each of the 4 PWM channels.
Trigger Pulses A and B Configuration The positions of the trigger pulses A and B are programmable
within the PWM cycle. These pulses can be used for different purpose, e.g., to trigger ADC sampling at a
specific point in time.
Trigger Pulse Length Configuration The length of PULSE_A and PULSE_B and the fixed trigger pulses
PULSE_CENTER and PULSE_ZERO is programmable in terms of clock cycles.
Asymmetric PWM Configuration To realize a wider time window between PWM switching events that
are close to each other, an asymmetric PWM shift can be programmed individually for each PWM channel.
This leaves the PWM duty cycles unchanged. It is useful for current measurement with sense resistors at
the bottom of the MOSFET half bridges.
Figure 45: Centered PWM with PWM channel 2 shifted from center (example showing only 3 PWM channels)
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