For locations, phone, fax, E-Mail see back cover
3
Hi-Rel
Grade
MGDM-150 Low Input Series
Gaia Converter FC02-009.08/06 Revision N
©
4
3- Block Diagram
The MGDM-150 low input series DC/DC converter is
based on a constant 420KHz pulse-width modulated
forward topology designed for ultra large input
range.
The output voltage is monitored on the secondary
side avoiding the use of optocoupler to optimize
long-term reliability and provide good immunity
against radiations.
An auxilliary supply is implemented to feed
independently all security functions such as the input
undervoltage lock-out (UVLO), overvoltage lock-out
(OVLO), the output overload protection (OCP), the
output overvoltage protection (OVP) and the ther-
mal protection (OTP).
As this auxilliary power is independent from the main
power supply, the module features an extreme wide
trim windows from 10% to 110% of the nominal
output voltage.
The main power transformer designed for more than
150W power is a multi-layer planar transformer which
allows 100% reproductibility for optized module
efficiencies.
The controlled feedback regulation is located at the
secondary side allowing a high regulation bandwidth
and a very fast response to load changes.
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