Texas Instruments C2000

ePWM
C2000 Microcontroller Workshop - Control Peripherals 7 - 15
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
.
.
.
This figure has the EPWMA output set high on compare A match and clear low on compare B
match, while the EPWMB output is configured to toggle on zero match.
ePWM Count Up-Down Symmetric
Waveform
with Independent Modulation on EPWMA / B
CA
↑
CA
↓
CA
↑
CA
↓
CB
↑
CB
↓
CB
↑
CB
↓
EPWMA
EPWMB
TBCTR
TBPRD
.
. .
.
.
.
. .
.
.
CMPB
CMPA
.
.
.
Here you can see that we can have different output actions on the up-count and down-count using
a single compare register. So, for the EPWMA and EPWMB outputs, we are setting high on the