HUGD-50 Datasheet, PDF (1/13 Pages) –

Hi-Rel HOLD-UP MODULE
HUGD-50 : 50W POWER ^Hi-Rel
Grade
Hold-Up Solution
16-40V & 9-36V DC/DC Converter Compatible
Metallic Case
• Unique Product for Hold-Up Solution
• Reduce Capacitance by 80%
• High efficiency (98%)
• Power range : from 4W to 50W
• Compatible with 9-36 or 16-40VDC Converter
• Include monitoring signals
• Programmable inrush current limitation
REDEFINING THE SOURCE OF POWER
© Gaia Converter FC97-027.01/06 Revision H
1-General
The GAIA Converter Hold up device the «power fail voltage»), the HUGD-50 begins
HUGD-50 provides a state-of-the-art solution to to charge the external capacitor at 38 VDC while
the problem of maintaining electronic system in powering the dc/dc converter. the charging
operation during input bus drop-out with enough current is controled and externally adjustable
time. Usually this approach uses very large between 100mA and 2A by a resistance. The
capacitors because they are only charged at the capacitor charging time depends on the charging
voltage at which power fail. The Gaïa Converter current. When the capacitor voltage reaches 34V,
HUGD-50 module provides an alternative solu-
tion to reduce the amount of capacitance needed
(representing 90% of charge) the signal (active,
floating output collector) «capacitor charged»
4
by charging the hold up capacitor at a high vol- is activated and the HUGD-50 enters in the nor-
tage (typically 38V) while limiting the input mal operation mode.
current.
• Normal operation mode : in normal
The HUGD-50 needs to be connected between operation mode with the capacitor charged and
the line source and DC/DC modules (if an EMI the input bus is between the «output power fail»
filter and /or a pre-regulator are used, the and 40VDC, the HUGD-50 consumes only power
HUGD-50 is connected between them and the to keep the capacitor charged (i.e.less than 1W.
converters). Basically the HUGD-50 charges the The voltage drop between input and output is
external capacitor to 38V while powering the lower than 150mV in the worth case (50W power
DC/DC converters. If the power fails, the and 9 VDC input voltage) The HUGD-50 will
HUGD-50 generates a signal and the converters operate indefinitely until the input voltage drops
are powered from the external capacitor. The below the «power fail voltage» threshold.
HUGD-50 can be used either with 16-40V or 9-
• Power fail mode : when the input vol-
36V input voltage DC/DC converters since the tage drops below the «power fail voltage»
«power fail voltage» is externally adjustable threshold a «power fail» signal is activated and
between 8.8V and 15.3V by the user.
the HUGD-50 disconnects input and output and
connects the hold-up capacitor to the output.
The HUGD-50 features 3 modes of operations: At this point the DC/DC converters are powered
• Charging operation mode : when the by the capacitor. When 90% of the usable stored
input voltage ramps-up and reaches the start- energy in the capacitor is activated and operation
up charge threshold (which is set at 1Vdc above will stop as the energy reaches zero.
2-Product Selection
HUGD - 50 (/T) and/or (/S)
(/T) : option for -55°C start up operating temperature.
(/S) : option for screening and serialization
For locations, phone, fax, E-Mail see back cover