Hold-up value calculation - GAIA Converter

Design Tools

Hold-Up Value Calculator

Hold-up value Calculator

GAIA Converter proposes a hold-up calculator to determine the hold-up capacitor value, in the following configuration:

The capacitor value is calculated by the formula: C hold-up = 2 * P out * t / Eff * (V² cap - UVLO²), where

C hold-up = minimum hold-up capacitor value (F)
t = hold-up time required (s)
P out = DC/DC converter output power (W)
Eff = DC/DC converter efficiency (%)
V cap = capacitor voltage (V)
UVLO = converter Under Voltage Lock Out (V)

Note : PF is the Power fail voltage of the Hold-up module. This value can be tuned on HUGD300 only. In all cases PF should be greater or equals to UVLO.