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Functional Description
The local CTRL2[FORCE] signal of submodule0 can be broadcast as the Master Force
signal to other submodules. This feature allows the CTRL2[FORCE] of submodule0 to
synchronously update all of the submodule outputs at the same time. The EXT_FORCE
signal originates from outside the PWM module from a source such as a timer or digital
comparators in the Analog-to-Digital Converter.
37.5.2.7 Independent or Complementary Channel Operation
Writing a logic one to CTRL2[INDEP] configures the pair of PWM outputs as two
independent PWM channels. Each PWM output is controlled by its own VALx pair
operating independently of the other output.
Writing a logic zero to CTRL2[INDEP] configures the PWM output as a pair of
complementary channels. The PWM pins are paired as shown in
complementary channel operation. Which signal is connected to the output pin (PWM23
or PWM45) is determined by MCTRL[IPOL].
VAL2
PWM23 Generation
PWM45 Generation
VAL4
Complementary operation allows the use of the deadtime insertion feature.
37.5.2.8 Deadtime Insertion Logic
The following figure shows the deadtime insertion logic of each submodule which is used
to create non-overlapping complementary signals when not in independent mode.
842
VAL3
VAL5
Figure 37-239. Complementary Channel Pair
KV4x Reference Manual, Rev. 2, 02/2015
Preliminary
Figure 37-239
0
1
IPOL
in
PWM23
PWM45
Freescale Semiconductor, Inc.
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