Additional Dead-Band Operating Modes - Texas Instruments Concerto F28M35 Series Technical Reference Manual

ePWM Submodules
Mode Mode Description
EPWMxA Out = EPWMxA In (No Delay)
6
EPWMxB Out = EPWMxA In with Falling Edge Delay
EPWMxA Out = EPWMxA In with Rising Edge Delay
7
EPWMxB Out = EPWMxB In with No Delay
Mode Description
EPWMxA and EPWMxB signals are as defined by OUT-MODE bits.
EPWMxA = A-path as defined by OUT-MODE bits.
EPWMxB = A-path as defined by OUT-MODE bits (rising edge delay or delay-
bypassed A-signal path)
EPWMxA = B-path as defined by OUT-MODE bits (falling edge delay or delay-
bypassed B-signal path)
EPWMxB = B-path as defined by OUT-MODE bits
EPWMxA = B-path as defined by OUT-MODE bits (falling edge delay or delay-
bypassed B-signal path)
EPWMxB = A-path as defined by OUT-MODE bits (rising edge delay or delay-
bypassed A-signal path)
Rising edge delay applied to EPWMxA / EPWMxB as selected by S4 switch (IN-
MODE bits) on A signal path only.
Falling edge delay applied to EPWMxA / EPWMxB as selected by S5 switch (IN-
MODE bits) on B signal path only.
Rising edge delay and falling edge delay applied to source selected by S4 switch
(IN-MODE bits) and output to B signal path only.
(1)
When this bit is set to 1, user should always either set OUT_MODE bits such that Apath = InA or OUTSWAP bits such that
EPWMxA=Bpath. Otherwise, EPWMxA will be invalid.
680
C28 Enhanced Pulse Width Modulator (ePWM) Module
Table 7-15. Classical Dead-Band Operating Modes (continued)
Table 7-16. Additional Dead-Band Operating Modes
(1)
Copyright © 2012–2019, Texas Instruments Incorporated
DBCTL[POLSEL] DBCTL[OUT_MODE]
S3 S2 S1
0 or 1 0 or 1 0
0 or 1 0 or 1 1
DBCTL[DEDB-
MODE] DBCTL[OUTSWAP]
S8 S6
0 0
0 0
0 1
0 1
0 X
1 X
SPRUH22I – April 2012 – Revised November 2019
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S0
1
0
S7
0
1
0
1
X
X