TIDUF04 December 2022
Figure 3-20 shows the behavior of the converter during start-up (AC source turned on) with –12 V, +12 V and +12 Vp at full load. C1 is –12-V output at 100 mA, C2 is +12-V output at 100 mA, C3 is +12 Vp at 2.2 A.
Figure 3-21 shows the behavior of the converter during shutdown (AC source disconnected) with –12 V, +12 V and +12 Vp at full load. C1 is –12-V output at 100 mA, C2 is +12-V output at 100 mA, C3 is +12 Vp at 2.2 A.
Figure 3-22 shows the behavior of the converter, loaded according to the specifications with 12 Vp at 0.44 A, and 5-V rail at 275 mA. Here the trace C2 is 12-Vp output (TP4_P), C1 is 5-V output and C4 is input VAC.
Figure 3-23 shows the transient response of the 5 VOUT when switched between zero and 1 A load current.
Figure 3-24 shows the transient response of the 3.3 VOUT when switched between zero and 1-A load current.
Figure 3-25 shows the transient response of the converter with zero to 2-A transients on 12 VOUT, while 12 V and –12 V are loaded both at 100 mA. C1 is –12-V output at 100 mA, C2 is +12-V output at 100 mA, C3 is +12 Vp with switched load and C4 is the 12 Vp output current.
Figure 3-26 shows the transient response of the converter with zero to 2-A transients on 12 VOUT, while 12 V and –12 V are both loaded at zero current. C1 is –12-V output at 0 mA, C2 is +12-V output at 0 mA, C3 is +12 Vp with switched load and C4 is the 12-Vp output current.
Figure 3-27 shows the transient response of –12-V output with 12 Vp fully loaded. C1 is –12-V output switched from 100 mA to zero and C4 is the –12-V output current.
Figure 3-28 shows the transient response of –12-V output with 12 Vp fully loaded. C1 is –12-V output switched from zero to 100 mA and C4 is the –12-V output current.
Figure 3-29 shows the transient response of +12-V output with 12 Vp fully loaded. C2 is +12-V output switched from zero to 100 mA and C4 is the +12-V output current.
Figure 3-30 shows the transient response of +12-V output with 12 Vp fully loaded. C2 is +12-V output switched from 100 mA to zero and C4 is the +12-V output current.