Hold-up time
The input side of the DC/DC converter is equipped with a bulk capacitor which keeps the output voltage alive for a certain period of time when the input voltage dips or is removed. The bulk capacitor can be discharged by loading the DC/DC converter on the output side or through a load which is parallel to the input. There is no protection in the DC/DC converter which prevents current from flowing back to the input terminals. If prevention is needed, an external diode should be used.
At no load, the hold-up time can be up to several seconds. The green DC-OK LED is also on during this time.
Hold-up time | typ. | 14ms | At 48Vdc input voltage, 24V, 5A output, see Fig. Hold-up time vs. input voltage |
min. | 11ms | At 48Vdc input voltage, 24V, 5A output, see Fig. Hold-up time vs. input voltage | |
typ. | 7ms | At 48Vdc input voltage, 24V, 10A output, see Fig. Hold-up time vs. input voltage | |
min. | 5ms | At 48Vdc input voltage, 24V, 10A output, see Fig. Hold-up time vs. input voltage |
