Hold-up time on DC/DC converters?

Hold-up time is the time between the input has it normal operation voltage and then suddenly drops towards zero and the Power supply keeps on feeding the load. For an AC/DC 10-20ms is standard.   For a DC/DC converter the case is different as the input must be equiped with series diode in order to achieve any Hold-up time at all. Depending on the input also more capacitor has to be added. In DC-fed system the causes of sudden voltage dips are usually large inductive loads or fuse blow, that are usually of short duration. Longer hold-up situation times can be when there is a switch between 2 battery system. Please contact Polyamp if you have requirement of Hold-up time on a DC/DC converter.

Last Updated on Monday, 04 January 2010 08:52