Up, Single Edge Asymmetric Waveform With Independent Modulation On Epwmxa And Epwmxb-Active Low - Texas Instruments Concerto F28M36 Series Technical Reference Manual

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Example 7-1. Code Sample for
EPwm1Regs.CMPB = Duty1B;
Figure 7-25. Up, Single Edge Asymmetric Waveform With Independent Modulation on EPWMxA and
TBCTR
TBPRD
value
P
EPWMxA
P
EPWMxB
A PWM period = (TBPRD + 1 ) × T
B Duty modulation for EPWMxA is set by CMPA, and is active low (that is, the low time duty is proportional to CMPA).
C Duty modulation for EPWMxB is set by CMPB and is active low (that is, the low time duty is proportional to CMPB).
D Actions at zero and period, although appearing to occur concurrently, are actually separated by one TBCLK period.
TBCTR wraps from period to 0000.
Example 7-2 contains a code sample showing initialization and run time for the waveforms in
SPRUHE8E – October 2012 – Revised November 2019
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Figure 7-24 (continued)
// adjust duty for output EPWM1B
EPWMxB—Active Low
CA
CB
TBCLK
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P
CB
P
C28 Enhanced Pulse Width Modulator (ePWM) Module
ePWM Submodules
CA P
P
Figure 7-25.
707