Introduction to Digital Power Conversion
XMC4000/1000 Family
PWM Generation
Application Guide 40 V1.0, 2015-01
Output
The HRPWM path offers dynamic Dead-Time Insertion and Active Output Level Selection.
4.12.1 PWM Dead-Time Compensation
The Dead-Time parameters for rise or fall-time can be independently changed, at any time, in any
mode, from one switch cycle to another. This is useful for adapting to load variations.
The XMC devices make use of this in order to maintain an optimized efficiency.
Figure 29 Dead-Time Compensation
Updating the Dead-Time
There are two methods:
1. Linked to one of the timers
2. Linked to the Dead-Time timer overflows
Source Switching (Mixed Mode)
There is switch mode-bit, by which the source setup that can be used in switching between CCM (i.e.
only timer control) and CRM (i.e. timer plus comparator), can be exchanged on demand, by request.
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