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BCD.00505_AC

5.3. Current Limitation

Main Output

The main output exhibits a substantially rectangular output characteristic controlled by a software feedback loop. If it

runs in current limitation and its voltage drops below ~10.8 VDC for more than 10 mS, the output will latch off

(standby remains on).

Figure 4 - Current Limitation on V1 (Vi = 230 VAC)

A second current limitation circuit on V1 will immediately switch off the main output if the output current increases

beyond the peak current trip point. The latch can be unlocked by disconnecting the supply from the AC mains or by

toggling the PS_ON input.

Standby Output

The standby output exhibits a substantially rectangular output characteristic down to 0 V (hiccup mode). If it runs in

current Limitation and standby output will be shut down and power supply into hick up mode, the main output will be

inhibited during the status.

Figure 5 - Current limitation on VSB

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Main Output Current (A)

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Standby Output Current (A)