Data Sheet
Naos Raptor 20A: Non Isolated Power Module:
July 28, 2009
4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 20A output current
Safety Considerations
Feature Descriptions
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.
Enable (Remote On/Off)
The Naos Raptor 20A modules feature an Enable pin with
positive logic 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.
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.
During a Logic High on the Enable pin, the module
remains ON. During Logic-Low, the module is turned
OFF.
An input fuse for the module is recommended. Due to the
wide input voltage and output voltage ranges of the
module, different fuse ratings are recommended as
shown in Table 1. These are suggested “maximum” fuse
ratings. However, for optimum circuit protection, the fuse
value should not be any larger than required in the end
application. As an option to using a fuse, no fuse is
required, if the module is
MODULE
R1
7.5K
ON/OFF
GND
ENABLE
R2
100k
C1
1000p
1. powered by a power source with current limit
protection set point less than the protection
device value listed in Table 1, and
2. the module is evaluated in the end-use
equipment.
Figure 47. Remote On/Off Implementation.
Components R2 and C1 are only present in the -49Z
option module.
Table 1.
Input
Voltage
Output Voltage (VDC)
Overcurrent Protection
0.59 to 1.3 1.31 to 2.7 2.71 to 5.0 5.1 to 6
(VDC)
10.1 to 14
6.51 to 10
4.5 to 6.5
5A
6.3A
10A
10A
15A
20A
15A
25A
30A
20A
30A
NA
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
.
Overtemperature Protection
To provide protection in a fault condition, these modules
are equipped with a thermal shutdown circuit. The unit
will shut down if the overtemperature threshold of 130ºC
is exceeded at the thermal reference point Tref. 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 begin
to operate at an input voltage above the undervoltage
lockout turn-on threshold.
LINEAGE POWER
13
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
