Standard output voltages of 1.5 to 54 VDC
Efficiencies up to 87% typical
Extra-Low 1U profile: 1.6 inch
High power density design of 14 Watts/cubic inch
1 to 4 isolated output slots, fully user configurable
Power Factor Correction (PFC) IEC 61000-3-2 compliant
700W @ 85 VAC or 900W @ 150VAC of total output power
Zero-load operation
Single-wire current sharing
Universal input AC range
Individual control signals on each module
Auxiliary power 5V (1A)
LPM409 (Industrial)
Industrial equipment
Telecommunications
Test and measurement
Automation
Peripherals
Audio/broadcast
Linear and rotary motion
LMM409 (Medical)
Imaging Equipment
Anesthesiology
Surgical Devices
Diagnostic Equipment
Patient Beds
Home Healthcare
Ultrasound
The LPM/LMM409 Series is a modular 900-watt AC-
DC power supply that provides a market-leading
power density of 14 watts per cubic inch and has an
extra low 1U profile. The LMM is the medically
approved version. From here on only the LPM
version will be discussed, differences for the LMM
version will be noted. The LPM409 offers the
flexibility of a modular architecture and the
combination of high efficiency and high power
density.
Designed for use where a unique set of voltage and
current requirements is needed, the supply's four
slots can be configured with PCB-based output
modules to deliver up to eight outputs. The LPM
output modules operate in any chassis position and
can provide up to 900 watts total power from a 150
VAC input and 700 watts from an 85 VAC input.
Forced-air cooling with airflow direction from input to
output is provided by an internal fan.
For LPM409 supplies using less than the four-slot
capability, blanking plates are installed for safety
purposes and to optimize airflow within the chassis.
The supplies are pre-set with default output module
settings or with the customer’s desired output
settings prior to delivery.
The LPM409 chassis can be populated with the
output modules listed in Module Selection table.
Conformal coating is available on request, please
consult with the factory.
North America
+1-866.513.2839
Asia-Pacific
+86.755.29885888
Europe, Middle East
+353 61 225 977
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BCD.00365_AB3
LPM/LMM409
NO. OF SLOTS
REQUIRED
1
1
1
1
1
1
1
1
1
1
FACTORY-SET
SINGLE-
OUTPUT (VDC)
5
12
24
36
48
15
30
15
30
MODULE
ADJUSTABLE
RANGE (VDC)
2.0 to 5.3
5.2 to 15
14 to 30
29 to 44
43 to 54
1.5 to 15
3 to 32
2x 1.5 to 15
2x 3 to 32
MAX. OUTPUT
CURRENT
(AMPS)
53
22
11
7.4
5,5
6
3
2x 6
2x 3
MAX. OUTPUT
POWER
2
(WATTS)
265
265
265
265
265
90
90
2x 90
2x 90
MODULE
E
F
G
H
J
K
L
M
N
0
1
P/N
3
LPM126-OUTA1-05
LPM126-OUTA1-12
LPM126-OUTA1-24
LPM126-OUTA1-36
LPM126-OUTA1-48
LPM109-OUTA1-10
LPM109-OUTA1-20
LPM118-OUTA2-10
LPM118-OUTA2-20
LPM100-BLAN
Blank Panel (Slot Cover)
2
3
To determine your desired power supply's part number, please refer to
Figure 2
for a detailed part number description.
Use the
LPM Configurator
located in the Modular Section on our website, or use our contacts page to locate a
distributor for further assistance.
For the power derating specification please see section 1.4 below.
Add –C for Conformal coating option.
1.1. Output Voltage Adjustment
Each LPM409 module’s output voltage is adjustable by means of a trimmer located on the module. For the modules
E<->J the trimmer is accessible through the adjustment hole located on the bottom of the power supply
(Figure 10).
For the modules K<->N the trimmer is accessible from rear side of the power supply
(Figure 5).
1.2. Parallel Connections
Depending on certain situations where current requirements exceed one module’s capability, the configurator will
process a solution using parallel connections. Paralleling busbars are available to make connections requiring higher
current needs. For correct current sharing functionality it is necessary to interconnect Current Share pins of the
modules that will operate in parallel using signal wires. Only E-J modules can be connected in parallel. For more
details read section 10.3, see
Figure 15.
1.3. Serial Connections
To increase output voltage it is possible to connect modules in series. Serial busbars are available (see section 10.4)
to make connections requiring higher voltage needs. The output of LPM409 is rated as SELV circuit, so the output
voltages are guaranteed to be less than 60V. The series combination of modules can exceed this SELV voltage, so in
this case the users must take adequate precautions to prevent direct contact with conductive parts. The maximal
total voltage
must not exceed 200V.
It is recommended to only connect the same modules with the same current
rating in series. The voltage sense pins VS+, VS- available on LPM126 modules must be connected according to
Figure17.
1.4. Power Derating
When specifying an LPM409 power supply in an application it is necessary to ensure that LPM409-CHAS and
modules (LPM126, LPM118 and LPM109) are operating within their power output capabilities, taking into account
the temperature derating and input voltage derating. The maximum permissible output power that may be drawn
from LPM409-CHAS and modules assembled in this chassis is given in
Figure1.
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© 2015 Bel Power Solutions, Inc.
BCD.00365_AB3
LPM/LMM409
Figure 1 - Power Derating Curves
a.)
LPM409-CHAS
b.)
Modules LPM126-5V
c.) Modules LPM126-12/24/36/48V
d.) Modules LPM118 / LPM109
2.1. Chassis Identification Numbering
First left-to-right sequence of the part number (4 characters):
LPM409
Low Profile Modular 4-slot, 900W, with single-phase AC input.
(Figure 2)
NOTE:
Chassis and modules are RoHS-6 compliant.
Figure 2 - LPM 4-Slot Model Part Number Description
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BCD.00365_AB3
LPM/LMM409
Example:
After entering your requirements, the web Configurator could recommend the following optimized part
number: LPM409-0HEG-DXXX which represents: Low Profile Modular Series with single-phase AC input, 4-slot, 900W
chassis with modules of: blank panel “0” in slot 1 and modules H, E, G in slots 2 to 4, respectively. Besides the blanking
panel in slots 1, the example's modules in this case would represent desired DC output voltages as follows: Slot 2 = H
for 36V, Slot 3 = E for 3.3V and Slot 4 = G for 24V.
Assembly facility code and customer build ID No. are established during actual power supply assembly.
The slots numbering when viewing the unit from the rear, or output side is 1 - 6 from left to right.
3.1. Safety Approvals
LPM409 (Industrial)
UL/CSA 60950-1 2nd
IEC 60950-1 2nd
EN 60950-1 2nd
CE Mark for LVD
LMM409 (Medical)
UL/CSA 60601-1, 3rd
IEC 60601-1, 3rd
EN 60601-1, 3rd
3.2. Insulation Safety Ratings
TEST POINTS
Input-to-Chassis
Input-to-Output
Outputs-to-Chassis
Output-to-Output
MINIMUM TEST VOLTAGE
2120 Vdc / min. 1s
4240 Vdc / min. 1s
200 Vdc / min. 1s
200 Vdc / min. 1s
INSULATION SAFETY RATING
Basic Insulation
Reinforced Insulation
Functional Insulation
Functional Insulation
4.1. Environmental Specification
PARAMETER
Cooling
Audible Noise
Operating Temperature
Storage Temperature
Humidity
Vibration
95% relative humidity @ 25 ºC, non-condensing
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
CONDITIONS / DESCRIPTION
Internal DC fan, air intake is from the AC connector side
exiting at the DC module side
Single unit, 4 modules assembled and full loaded, on a table
at 1m distance.
50°C at Full power and up to 70°C at 50% load (linearly
derated, for details see section 1.4)
MIN
NOM
MAX
UNITS
65
-20
-40
25
50
75
dBA
ºC
ºC
1
4
20
40
Gpk
Gpk
Gpk
Gpk
Shock
4.2. Reliability
PARAMETER
Calculated MTBF
Demonstrated MTBF
CONDITIONS / DESCRIPTION
According to MIL-HDBK217, Ground benign 30ºC,
NOTE:
Calculation was done for LPM409-EFGH.
Tamb = 25°C
MIN
250,000
250,000
NOM
MAX
UNITS
hours
hours
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BCD.00365_AB3
LPM/LMM409
PARAMETER
Input Fuse
Inrush Current Limitation
Short Circuit Protection
Output Overvoltage
Protection
Over Temperature
1
CONDITIONS / DESCRIPTION
One fuse, non-user serviceable, located on line leg of AC
input, Fast Acting type
Provided by NTC
Provided by Current Limit circuit
Latching (unit needs to be turned-off and on)
OT with auto restart
MIN
NOM
12.5
MAX
UNITS
A
See
Input Specification
section
105
1
10
125
1
25
70
%
Io_nom
%
Vo_nom
°C amb
100-150% for K, M modules
100-200% for L, N modules
6.1. EMC Immunity
PARAMETER
Electrostatic Discharge
(ESD)
RF Susceptibility
Fast transient / burst
Surge
RF Conducted Disturbance
CONDITIONS / DESCRIPTION
IEC/EN61000-4-2; GR-1089 R2-1, R2-2, R2-3
Level 4: contact: ±8 kV, air: ± 15kV
IEC/EN 61000-4-3;
Level 3: 10 V/m; 80 MHz to 1000 MHz;
AM 80%, 1 kHz radiated; RF electromagnetic field
IEC/EN 61000-4-4; Level 3; ±2 kV, 5kHz
electrical fast transient / burst immunity test
IEC61000-4-5, level 3; line to earth: ± 2kV, line to line: ± 1kV surge
immunity test
IEC/EN 61000-4-6; Level 3; GR-108;
10V, 0.15 to 80MHz, AM 80%, 1kHz
IEC/EN 61000-4-11; Voltage dips, interruptions and variations.
(Interpretation: dip below Vi min with Po nom = hold-up time 10 ms)
1a: Dip 30%, 100ms
1a: Dip 30%, 200ms
Voltage Dips / Short
Interruptions
1a: Dip 60%, 10ms
1a: Dip 60%, 100ms
1a: Dip >95%, 10ms (interruption)
1a: Dip >95%, 100ms (interruption)
CRITERION
Perform, criterion B
Perform, criterion A
Perform, criterion B
Perform, criterion B
Perform, criterion A
Perform, criterion B
Perform, criterion B
Perform, criterion A
Perform, criterion B
Perform, criterion A
Perform, criterion B
6.2. EMC Emission
PARAMETER
Conducted Emission
EN55022, FCC
CONDITIONS / DESCRIPTION
EN 55022, FCC – EN 55022, and CISPR 22 Class B,
FCC 47CFR15 unintentional radiators; standalone at all nominal
input voltages and measured in Po1: 0, 50%, 100%;
signal connections open
EN 55022, FCC – EN 55022, and CISPR 22 Class B,
FCC 47CFR15 unintentional radiators; standalone at all nominal
input voltages and measured in Po1: 0, 50%, 100%;
signal connections open
EN 61000-3-2, sine wave input, Class D; measured standalone at all
Vin nominal at power levels between 0 and rated
CRITERION
Class B;
min. 3dB/µV margin
Radiated Emission
EN55022, FCC
Input Current Harmonics
Radiated Class B QSP / AVG
min. 3 dB margin
Pass
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