STNRGPF01 control architecture
STNRGPF01
Thus the master PWM signal is generated by comparing the analog PI output V and
ctrl
a triangular wave V
at switching frequency. Finally, an interleaving operation is
triang
performed and three 120° phase-shifted PWM signals (180° for two channels only) drive the
three power switches.
Moreover, the digital section includes the input voltage and load feed-forward for fast
transient response when the main voltage changes suddenly or a load step current occurs,
preventing large over or undervoltage on the output capacitor C
.
out
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DocID030377 Rev 2
STMICROELECTRONICS [ ST ]
