Introduction to Digital Power Conversion
XMC4000/1000 Family
PWM Generation
Application Guide
36
V1.0, 2015-01
PWM Phase-Shift Master-Slave Principle
A CC8-slice (e.g. CC80) and its two compare channels can be used as a master for the PSFB control
as follows:
Channel1
−
The CC80CR1 compare events control the phase-shift of the PWM pulse stream (S) from a
slave timer (e.g. CC81), by requesting one single-shot PWM pulse upon each compare event.
Channel2
−
The CC80CR2 compare events generate the fixed PWM pulse stream (M).
Figure 25
PWM
– Variable Phase-Shift Master-Slave Principle in Detail
