AN2300 Datasheet, PDF (11/21 Pages) STMicroelectronics – An alternative solution to Capacitive power

AN2300
Modified Buck converter
Line regulation diagrams are shown in Figure 12., Figure 13. and Figure 14. for the
Capacitive and the Buck converters respectively.
Figure 12. Capacitive converter line regulation, at full load
Figure 13. Buck converter line regulation
(schematic A), at full load
Figure 14. Buck converter line regulation
(schematic B), at full load
The efficiency (η = P_OUT / P_IN) of the power supplies has been evaluated at the same output
power value (about 0.6W), in the whole input voltage range. The results are shown in Figure
15.
Rev1
11/21