MGDS-150-H-B ETC2 [List of Unclassifed Manufacturers], MGDS-150-H-B Datasheet - Page 12

• Manufacturer Part Number: MGDS-150-H-B
• Description: Hi-Rel DC/DC CONVERTER
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

©
Gaia Converter FC02-009.08/06 Revision N
12- Description of Protections
The MGDM-150 low input series include 5 types of protection
devices that are powered and controlled by a fully independant
side power stage.
12-1 Input Undervoltage Lockout (UVLO) and
Overvoltage Lockout (OVLO)
12-1-1 Undervoltage Lockout (UVLO)
An undervoltage protection is implemented to lock off the
converter as long as the input voltage has not reached the
UVLO turn-on threshold (see section 4 for value) which is the
minimum input voltage required to operate without damaging
the converter.
12-1-2 Overvoltage Lockout (OVLO)
An overvoltage protection will inhibit the module when input
voltage reaches the overvoltage lockout turn-off threshold (see
section 4 for value) and restores to normal operation
automatically when the input voltage drops below the
overvoltage Lockout turn on threshold.
12-2 Output Over Current Protection (OCP)
The MGDM-150 low input series incorporates a foldback current
limit and protection circuit. When the output current reaches
110% of it’s full-rated current (Icurrent limit), the output vol-
tage falls and output current falls along the foldback line as
described in the figure herein. The module restart automatically
to normal operation when overcurrent is removed.
12-3 Output Overvoltage Protection (OVP)
Each circuit has an internal overvoltage protection circuit that
monitors the voltage accross the output power terminals.
It is designed to latch the converter off at 115% to 135% of
output voltage.
Once in OVP protection, the module will restart with the On/
Off function or with the input bus restart.
12-4 Over Temperature Protection (OTP)
A thermal protection device adjusted at 115°C (+/-5%) internal
temperature with 10°C hysteresis cycle will inhibit the mo-
dule as long as the overheat is present and restores to nor-
mal operation automatically when overheat is removed. The
efficiency of the OTP function is warranty with the module
mounted on a heatsink.
For locations, phone, fax, E-Mail see back cover
MGDM-150 Low Input Series
Off
On
Off
On
Vout
UVLO
Turn-off
UVLO
Turn-on
OVLO
Turn-on
110% of full
rated current
10˚c
115˚c
OVLO
Turn-off
Icurrent limit
Iout
Vin
Baseplate
Temperature
Hi-Rel
Grade
4
12