"Hi-Rel DC/DC CONVERTERMGDM-18 : 18W POWER nn

Hi-RelGrade

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Single OutputMetallic Case - 1.500 VDC Isolation

nn 28Vdc input compliant with MIL-STD-704 D/EՕ Ultra compact 18/20W DC/DC converter Wide temperature range : -40հC/+105C case
Е High efficiency up to 83 % Soft startՕ Galvanic isolation 1.500 VDC Integrated LC EMI filter
Օ Permanent short circuit protection
No optocoupler for high reliability nn

1-General

nnThe MGDM-18 series is a full family of high per-
formance DC/DC low profile power modules
designed for aerospace, military and high-end
industrial applications. These modules use a high
frequency fixed switching technic at 480 KHz
providing excellent reliability, low noise
characteristics, high power density and a low pro-
file package. Standard models are available with
nominal input voltages as 5, 12 or 28 volts in
range of 4,5-5,5 9-36 or 16-40 volts. The series
include single voltage choices of 3,3, 5, 12 or 15
volts. The MGDM-18 series is able to supply up to
18/20W output power.
All the modules are designed with LC network
filters to minimize reflected input current ripple
and output voltage ripple.
The modules include a soft-start and a permanent
The modules include a soft-start, an inputundervoltage lock-out, a permanent short circuitprotection and an output overvoltage protectionto ensure efficient module protections.The soft-start allows current limitation and
eliminates inrush current during start-up. The
short circuit protection completely protects the
module against short-circuits of any duration by
a shut-down and restores to normal when the
overload is removed.
The design has been carried out with surface
mount components and is manufactured in a fully
automated process to guarantee high quality. Each
module is tested and burned in with a GAIA
Converter automated test equipment before and
after encapsulation.The modules are potted with
an excellent thermal conductive compound and
packaged in a metallic case to ensure the moduleՒs
integrity under high temperature conditions. nn4 nn

2-Product Selection

nnSingle output model: MGDS-18- (/T) and/or (/S)

(/T) : option for -55C start up operating temperature.
(/S) : option for screening and serialization Transient Input Voltage Range Output Permanent n/a40 VDC/100 ms*
50 VDC/100 ms* C : 4,5-5,5 VDCH : 9-36 VDC
J : 16-40 VDC B : 3.3 VDCC : 5 VDC
E : 12 VDC
F : 15 VDC >
* Consult factory for details REDEFINING THE SOURCE OF POWER

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Gaia Converter FC01-036.10/07 Revision K For locations, phone, fax, E-Mail see back cover >

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