NSR050A0X432Z Datasheet, PDF (9/15 Pages) Lineage Power Corporation – Naos Raptor 50A: Non-Isolated Power Modules

Data Sheet
February 3, 2010
Naos Raptor 50A: Non Isolated Power Module:
5 – 14Vdc input; 0.6Vdc to 2.0Vdc Output; 50A output current
performance of the module can be achieved by using
the Tunable Loop feature described later in this data
sheet.
Safety Considerations
For safety agency approval the power module must
be installed in compliance with the spacing and
separation requirements of the end-use safety agency
standards, i.e., UL 60950-1, CSA C22.2 No. 60950-1-
03, and VDE 0850:2001-12 (EN60950-1) Licensed.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements. The power
module has extra-low voltage (ELV) outputs when all
inputs are ELV.
The input to these units is to be provided with a fast-
acting fuse with a maximum rating of 30 A in the
positive input lead.
Feature Descriptions
Enable (Remote On/Off)
The Naos Raptor 50A power modules feature an
Enable with positive logic pin for remote On/Off
operation. If not using the Enable pin, leave the pin
open (the module will be ON, except for the -49 option
modules where leaving the pin open will cause the
module to remain OFF). The Enable signal (VEnable) is
referenced to ground.
During a Logic High on the Enable pin, the module
remains ON. During Logic-Low, the module is turned
OFF.
MODULE
5V
100K
ON/OFF
2.2K
47K
2K
2.2K
47K
GND
2K
ENABLE
Figure 23. Remote On/Off Implementation. The
100K resistor is absent in the -49 option modules.
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current
limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. The unit
operates normally once the output current is brought
back into its specified range. The typical average
output current during hiccup is 10% of Io,max.
Over Temperature Protection
To provide protection in a fault condition, the unit is
equipped with a thermal shutdown circuit. The unit will
shut down if the overtemperature threshold of 105ºC
is exceeded at the thermal reference point Tred. The
thermal shutdown is not intended as a guarantee that
the unit will survive temperatures beyond its rating.
Once the unit goes into thermal shutdown, it will then
wait to cool before attempting to restart.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, module operation is disabled. The module will
LINEAGE POWER
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