Soft start behavior is shown in the following figures.

In the following waveforms, channel 1 in dark blue is load current; channel 3 in purple is output voltage; channel 4 in green is primary current.

Figure 3-11 Soft Start With 400-VDC Input,
0-A Load

Figure 3-13 Soft Start With 400-VDC Input, 84-A Load

Figure 3-12 Soft Start With 400-VDC Input,
42-A Load