SLVUDT3 September 2026
This section shows typical switching waveforms at different load conditions at 230Vac input and 20V output. Ch1 - Output Voltage, Ch2 - Bulk Capacitor Voltage, Ch3 - Switch Node Voltage, and Ch4 - FB pin Voltage
Figure 3-34 230Vac/0.4W (231khz Burst Frequency/ Vfb - 0.26V)
Figure 3-36 230Vac/10W (39kHz Frequency-Foldback/ Vfb - 1.35V)
Figure 3-38 230Vac/40W (87kHz 6th Valley Switching/ Vfb - 1.73V)
Figure 3-35 230Vac/4.4W (25kHz Frequency-Foldback / Vfb - 1.15V)
Figure 3-37 230Vac/16W (52kHz Frequency-Foldback/ Vfb - 1.46V)
Figure 3-39 230Vac/65W (106kHz 3rd Valley Switching/Vfb - 1.93V)