The following figures show the output voltage start-up waveform (YELLOW), the ENABLE waveform (BLUE), and the output current waveform (RED) under two different output conditions.

Figure 4-1 V_IN = 400 V and V_OUT = 400 V at 2 A. Resistive Load (V_OUT: 100 V/DIV, ENABLE: 5 V/DIV, I_OUT: 2 A/DIV, 400 ms/DIV, BWL = 20 MHz)

Figure 4-2 V_IN = 400 V and V_OUT = 400 V at 40 mA. Resistive Load (V_OUT: 100 V/DIV, ENABLE: 5 V/DIV, I_OUT: 100 mA/DIV, 400 ms/DIV, BWL = 20 MHz)