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LPM409 AC-DC Modular Power Supply Data Sheet
5V, 10V, 12V, 20V, 24V, 36V & 48V Single-Output Modules
10V, 20V Dual-Output Modules
4. Environmental and Reliability specifications
4.1 Environmental specification
PARAMETER
CONDITIONS / DESCRIPTION
MIN.
NOM.
MAX.
UNITS
Cooling
Internal DC fan, air intake is from the AC
connector side exiting at the DC module side
Audible Noise
Single unit, 4 modules assembled and full loaded,
on a table at 1m distance.
65
dBA
Operating
Temperature
Storage Temperature
50°C at Full power and up to 70°C at 50% load
(linearly derated, for details see section 1.4)
-20
-40
25
50
75
oC
oC
Humidity
95% relative humidity @ 25 oC, non-condensing
Vibration
Shock
Operating: Swept 5-500-5Hz profile, 3 axis, 5
sweep cycles per axis
Non-operating: Swept 5-500-5Hz profile, 3 axis, 5
sweep cycles per axis
Operating: 11ms, half sine, 10 shocks per face
Non-operating: 11ms, half sine, 3 shocks per face
1
4
20
40
Gpk
Gpk
Gpk
Gpk
4.2 Reliability
PARAMETER
Calculated MTBF
Demonstrated MTBF
CONDITIONS / DESCRIPTION
According to MIL-HDBK217, Ground benign 30 oC,
Note: Calculation was done for LPM409-EFGH.
Tamb=25°C
MIN.
250,000
250,000
NOM.
MAX.
UNIT
S
hours
hours
5. Fault Protection
PARAMETER
Input Fuse
CONDITIONS / DESCRIPTION
One fuse, non-user serviceable, located
on line leg of AC input, Fast Acting type
MIN.
NOM.
12,5
MAX.
UNITS
A
Inrush Current Limitation
Provided by NTC
See Input specification section
Short Circuit Protection
Output Overvoltage
Protection
Over Temperature
Provided by Current Limit circuit
Latching (unit needs to be turned-off and
on)
OT with auto restart
105
10
125
25
70
1
% Io_nom
% Vo_nom
°C amb
1
150% for K, M modules
200% for L, N modules
BCD.00054 Rev. AC, 19-Dec-13
Page 5 of 20
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