Electrical waveform

AN4346

28/33

DocID025107 Rev 1

3.5

Startup at no load

If the converter wakes-up during no load condition, the OVP protection is triggered and the

output voltage is regulated at 32 V, protecting the output electrolytic capacitors from high

voltage.

Figure 39. Startup at 100 Vac - 50 Hz - no load

Figure 40. Startup at 230 Vac - 50 Hz - no load

CH1: LED current

CH2: CS pin

CH1: LED current

CH2: CS pin