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AN1894 - APPLICATION NOTE

Following pictures starting from Figure 10 to Figure 17 show the most important voltage or current

waveforms at different input and output conditions. Channel 1 (pink) is the power MOSFET Source

terminal voltage of the VIPer12. Channel 4 (red) shows the inductor current. The purpose of those

pictures is to demonstrate the skipping cycle function at light or no-load condition and cycle-by-cycle

primary current limitation at overload or output shorted condition.

40

45

50

55

60

65

70

75

80

0

0.02

0.04

0.06

0.08

0.1

Output Current [A]

125VDC

150VDC

200VDC

250VDC

300VDC

350VDC

375VDC