ePWM
7 - 16 TMS320F2837xD Microcontroller Workshop - Control Peripherals
ePWM Count Up Asymmetric Waveform
with Independent Modulation on EPWMA / B
Z
↑
P
X
CB
X
CA
↓
Z
↑
P
X
CB
X
CA
↓
Z
↑
P
X
Z
↑
P
X
CB
↓
CA
X
Z
↑
P
X
CB
↓
CA
X
Z
↑
P
X
TBCTR
TBPRD
.
.
.
.
EPWMA
EPWMB
.
.
.
.
.
CMPA
CMPB
The next few figures show how the setting of the action qualifier with the compare matches are
used to modulate the output pins. Notice that the output pins for EPWMA and EPWMB are
completely independent. In the example above, the EPWMA output is being set high on the zero
match and cleared low on the compare A match. The EPWMB output is being set high on the
zero match and cleared low on the compare B match.
ePWM Count Up Asymmetric Waveform
with Independent Modulation on EPWMA
CA
↑
CB
↓
CA
↑
CB
↓
Z
T
Z
T
Z
T
EPWMA
EPWMB
TBCTR
TBPRD
.
.
.
.
.
.
CMPB
CMPA
.
.
.
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