EMERSON LPS40-M Service Manual
Embedded Power for
Business-Critical Continuity
LPS40-M Series
40 Watts
Medical
Special Features
• Medical safety approvals
• Universal input
• 3" x 5" footprint
• Less than 1U high
• Remote sense on main output
• Low output ripple
• Adjustable 5V output
• Overvoltage protection
• Overload protection
• 110 KHz switching frequency
• LPX40 enclosure kit available
Total Power: 40-55 Watts
Input Voltage: 85-264 VAC
120-300 VDC
# of Outputs: Triple
Electrical Specifications
Safety
Input
Input ra nge 85-264 VAC; 120-300 VDC
Frequency 47-440 Hz
Inrush current <18A peak @ 115VAC; <36A peak @ 230VAC, cold start @ 25°C
Input current 1A max. (RMS) @ 115VAC
Efficiency 70% typical at full load
EMI filter FCC Class B conducted; CISPR 22 Class A conducted;
EN55022 Class A conducted; VDE 0878 PT3 Class A conducted
Safety ground
leakage current
<75μA @ 50/60 Hz, 264 VAC input
Output
Maximum power 40W for convection; 55W with 30CFM forced air
Adjustment range -5, +10% minimum
Hold-up time 20ms @ 40W load, 115VAC nominal line
Overload protection
Short circuit protection on all outputs
Case overload protected @ 110 -145% above peak rating
Overvoltage protection 5V output; 5.7 to 6.7VDC. Other outputs 10% to 25%
above nominal output
Remote sense Compensates for 0.5 V lead drop minimum.
Will operate without remote sense connected.
Reverse connection protected.
VDE 0750/EN60601-1 (IEC601)
UL UL2601 E182560
CSA CSA 22.2 No.601.1
LR109492
CE Mark (LVD)
Rev. 07.23.07
LPS40-M Series
1 of 3
RoHS
Embedded Power for
Business-Critical Continuity
Ordering Information
Model
Number
Output
Voltage
Minimum
Load
Maximum Load with
Convection Cooling
Maximum Load
with 30CFM
forced Air
Peak Load 1Regulation
2
Ripple P/P
(PARD)
3
LPS42-M 5V 0A 8A 11A 12A ±2% 50 mV
LPS43-M 12V 0A 3.3A 4.5A 5A ±2% 120 mV
LPS44-M 15V 0A 2.6A 3.6A 4A ±2% 150mV
LPS45-M 24V 0A 1.6A 2.3A 2.5A ±2% 240mV
1. Peak current lasting <30 seconds with a maximum 10% duty cycle.
2. At 25°C including initial tolerance, line voltage, load currents and output voltages adjusted to factory settings.
3. Peak-to-peak with 20 MHz bandwidth and 10 μF in parallel with a 0.1 μF capacitor at rated line voltage and
load ranges.
Rev. 07.23.07
LPS40-M Series
2 of 3
Operating temperature: 0° to 50°C ambient. Derate each output 2.5% per degree from
50° to 70°C, -20°C startup
Storage temperature: -40°C to +85°C
Temperature coefficient:
±0.4% per °C
Electromagnetic
susceptibility:
Designed to meet IEC 801, -2, -3, -4, -5, -6, Level 3
Humidity: Operating; non-condensing 5% to 95% RH
Vibration: Three orthogonal axes, sweep at 1 oct/min, 5 min. dwell at
four major resonances 0.75G peak 5Hz to 500Hz, operational
MTBF demonstrated: >550,000 hours at full load and 25°C ambient conditions
Environmental Specifications
Power Derating Curve
Output
Power
(Watts)
0°C
10W
20W
30W
40W
10°C 20°C 30°C 40°C 50°C 60°C 70°C
TA – Ambient Temperature – °C
0W
Natural
Convection
Cooling
20W
27.5W
55W
30 CFM Forced Air Cooling
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