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Applications to Power Topologies
terminal of the comparator. Alternatively, an external reference could be connected at this input. The
comparator output is an input to the Digital compare sub-module. The ePWM module is configured in such
a way so as to trip the ePWM1A output as soon as the sensed current reaches the peak reference value.
A cycle-by-cycle trip mechanism is used.
configuration.
Figure 7-71. Peak Current Mode Control of a Buck Converter
Figure 7-72. Peak Current Mode Control Waveforms for
ePWM1
Time base
DAC OUT/
COMP1-
Isense
DCAEVT2.force
ePWM1A
766
C28 Enhanced Pulse Width Modulator (ePWM) Module
Figure 7-72
TBPRD
= 300
Increased
Load
Copyright © 2012–2019, Texas Instruments Incorporated
shows the waveforms generated by the
Figure 7-71
SPRUHE8E – October 2012 – Revised November 2019
www.ti.com
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