Switching behavior of Secondary MOSFET is shown in Figure 3-1 through Figure 3-9. The test condition is room temperature.

CH1: Vgs of Secondary MOSFET

CH2: Vds of Secondary MOSFET

CH3: Differential voltage of transformer primary winding

CH4: Current waveform of transformer primary winding

Figure 3-1 Switching at 200V_in, 13.5V_out, 20A Load

Figure 3-3 Switching at 200V_in, 13.5V_out, 220A Load

Figure 3-5 Switching at 400V_in, 13.5V_out, 120A Load

Figure 3-7 Switching at 450V_in, 13.5V_out, 20A Load

Figure 3-9 Switching at 450V_in, 13.5V_out, 180A Load

Figure 3-2 Switching at 200V_in, 13.5V_out, 120A Load

Figure 3-4 Switching at 400V_in, 13.5V_out, 20A Load

Figure 3-6 Switching at 400V_in, 13.5V_out, 250A Load

Figure 3-8 Switching at 450V_in, 13.5V_out, 120A Load