Figure 238. Burst Mode Emulation Example; Figure 239. Carrier Frequency Signal Insertion - ST STM32G4 Series Reference Manual

Advanced arm-based 32-bit mcus
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High-resolution timer (HRTIM)
Counter
REP
DMA
request
CMPC1xR
0x0001 0800
Output
REPxR =1
CMP1xR = 0x0800
26.3.16
Chopper
A high-frequency carrier can be added on top of the timing unit output signals to drive
isolation transformers. This is done in the output stage before the polarity insertion, as
shown on
chopper on outputs 1 and 2, respectively.
f HRTIM
882/2083

Figure 238. Burst mode emulation example

REP
DMA
request
RUN
Figure
239, using CHP1 and CHP2 bits in the HRTIM_OUTxR register, to enable

Figure 239. Carrier frequency signal insertion

Carrier
/16
generation
Sync
x1
Carrier
generation
Sync
x2
0x0003 0000
REPxR =3
CMP1xR = 0x0000
IDLE (emulated)
Chopper
CHP1
CHP2
Fault / Idle sources
RM0440 Rev 1
REP
DMA
request
0x0001 0800
REPxR =1
CMP1xR = 0x0800
RUN
Polarity
HRTIM_CHx1
Fault
/
Idle
HRTIM_CHx2
RM0440
REP
DMA
request
MS32288V1
MS32334V2

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