Advanced-control timers (TIM1/TIM8) RM0351
786/1693 DocID024597 Rev 3
Figure 227. Combined PWM mode on channel 1 and 3
26.3.14 Combined 3-phase PWM mode
Combined 3-phase PWM mode allows one to three center-aligned PWM signals to be
generated with a single programmable signal ANDed in the middle of the pulses. The
OC5REF signal is used to define the resulting combined signal. The 3-bits GC5C[3:1] in the
TIMx_CCR5 allow selection on which reference signal the OC5REF is combined. The
resulting signals, OCxREFC, are made of an AND logical combination of two reference
PWMs:
– If GC5C1 is set, OC1REFC is controlled by TIMx_CCR1 and TIMx_CCR5
– If GC5C2 is set, OC2REFC is controlled by TIMx_CCR2 and TIMx_CCR5
– If GC5C3 is set, OC3REFC is controlled by TIMx_CCR3 and TIMx_CCR5
Combined 3-phase PWM mode can be selected independently on channels 1 to 3 by setting
at least one of the 3-bits GC5C[3:1].
069
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