Pwm Dithering - Infineon XMC4500 series Reference Manual

CC4(y-1)
capture
Connection
direction
matrix
load
CC4y
Conn.
Matrix
Additional functions
Figure 22-44 Timer concatenation control logic
22.2.10

PWM Dithering

The CCU4 has an automatic PWM dithering insertion function. This functionality can be
used with very slow control loops that cannot update the period/compare values in a fast
manner, and by that fact the loop can lose precision on long runs. By introducing dither
on the PWM signal, the average frequency/duty cycle is then compensated against that
error.
Each slice contains a dither control unit, see
Reference Manual
CCU4, V1.15
Timer Timer
Timer logic
concat concat
0
1
1
CCcapt1
0
1
CCgate
0
1
CCcapt0
0
1
CCload
0
Timer Concat
CC4yCMC.TCE = 1
Capture/Compare Unit 4 (CCU4)
CC4yPR
Comp
CC4yTIMER Comp
0
Comp
CC4yCR
Timer Logic
Figure 22-45 .
22-48
Subject to Agreement on the Use of Product Information
XMC4500
XMC4000 Family
1
0
1
CC4 PM
&
y
1
0
1
CC4 ZM
&
y
CC4 CM
&
y
1
1 0
Timer Concat
CC4yCMC.TCE = 1
V1.6, 2016-07