MEAN WELL LOP-400 Series
400W 5"x3" Low Profile Open Frame Power Supply
Key Features
- MEAN WELL Patent Number: ZL 202223277512.1
- 5"x3" compact size with low profile (27.5mm)
- 80~264Vac input with PFC, No load power consumption < 0.5W
- Global certificates in multi-fields (ITE 62368-1, Medical 60601-1, Household 60335-1, Industrial 61558-1/-2-16)
- 150% peak load @ 3s
- 250W convection, 400W with FAN (23CFM forced-cooled)
- Suitable for Class I or Class II installations
- Over voltage category III (OVC III)
- -40 ~ +80°C wide range operation temperature
- High efficiency up to 95%
- Protections: Short circuit / Overload / Over voltage / Over temperature
- Extremely low leakage current
- Operating altitude up to 5000 meters
- Built-in 12V/0.5A for external FAN
- Built-in Remote sense
- 3 years warranty
Product Description
The LOP-400 is a 400W highly reliable green PCB type low profile power supply with a high power density (24.6W/in³) on the 5" by 3" footprint. It accepts 80~264VAC input and offers various output voltages between 12V and 54V. The working efficiency is up to 95% and the extremely low no load power consumption is down below 0.5W.
The LOP-400 is suitable for both Class I (with FG) and Class II (no FG) system designs. It complies with international safety regulations such as IEC/BS EN/EN/UL62368-1, IEC/BS EN/EN60335-1, IEC/BS EN/EN61558-1/-2-16, IEC/BS EN/EN60601-1. It serves as a high price-to-performance power supply solution for various industrial applications. The extremely low leakage current is less than 500 μA. Additionally, it conforms to international medical regulations (2*MOPP) and EMC BS EN/EN55011, making it ideal for BF rated “patient contact" medical system equipment.
Applications
- Industrial automation machinery
- Industrial control system
- Mechanical and electrical equipment
- Electronic instruments, equipment, or apparatus
- Power sourcing equipment of PoE
- Medical devices
Model Encoding
Example: LOP-400-12
- Series name: LOP-400
- Rated wattage: 400
- Output voltage: 12V (options: 12V, 15V, 18V, 24V, 27V, 36V, 48V, 54V)
Specifications
General Electrical Specifications
| Model | DC Voltage | Current (Peak/3sec.) | Current (23CFM) | Current (Convection) | Rated Power (Peak/3sec.) | Rated Power (23CFM) | Rated Power (Convection) | Ripple & Noise (max.) Note.2 |
|---|---|---|---|---|---|---|---|---|
| LOP-400-12 | 12V | 50A | 33.3A | 20.8A | 600W | 399.6W | 249.6W | 120mVp-p |
| LOP-400-15 | 15V | 40A | 26.7A | 16.7A | 600W | 400.5W | 250.5W | 150mVp-p |
| LOP-400-18 | 18V | 33.3A | 22.2A | 13.9A | 599.4W | 399.6W | 250.2W | 180mVp-p |
| LOP-400-24 | 24V | 25A | 16.7A | 10.5A | 600W | 400.8W | 252W | 200mVp-p |
| LOP-400-27 | 27V | 22.2A | 14.9A | 9.3A | 599.4W | 402.3W | 251.1W | 200mVp-p |
| LOP-400-36 | 36V | 16.7A | 11.2A | 7.1A | 601.2W | 403.2W | 255.6W | 250mVp-p |
| LOP-400-48 | 48V | 12.5A | 8.4A | 5.3A | 600W | 403.2W | 254.4W | 250mVp-p |
| LOP-400-54 | 54V | 11.1A | 7.5A | 4.75A | 599.4W | 405W | 256.5W | 250mVp-p |
Output Characteristics
| Parameter | Voltage Adj. Range (Main Output) | Voltage Tolerance Note.3 | Line Regulation | Load Regulation | Setup, Rise Time | Hold Up Time (Typ.) | Voltage Range Note.4 | Frequency Range |
|---|---|---|---|---|---|---|---|---|
| 11.4~12.6V | ±3.0% | ±0.5% | ±1.0% | 1000ms, 30ms/230VAC | 30ms@250W load, 16ms@400W load | 80~264VAC | 47~63Hz | |
| 14.3~15.8V | ±3.0% | ±0.5% | ±1.0% | 1500ms, 30ms/115VAC at full load | 113~370VDC | |||
| 17.1~18.9V | ±3.0% | ±0.5% | ±1.0% | |||||
| 22.8~25.2V | ±2.0% | ±0.5% | ±1.0% | |||||
| 25.6~28.4V | ±1.0% | ±0.5% | ±1.0% | |||||
| 34.2~37.8V | ±1.0% | ±0.5% | ±1.0% | |||||
| 45.6~50.4V | ±1.0% | ±0.5% | ±1.0% | |||||
| 52~58V | ±1.0% | ±0.5% | ±1.0% |
Input Characteristics
| Parameter | Power Factor | Efficiency (Typ.) | AC Current (Typ.) | Inrush Current (Typ.) | Leakage Current |
|---|---|---|---|---|---|
| PF>0.95/230VAC PF>0.98/115VAC at full load | 94% (12V) / 94.5% (15V) / 95% (18V, 27V, 36V, 48V, 54V) / 94.5% (24V) | 4.2A/115VAC, 2.1A/230VAC | COLD START 40A/115VAC, 80A/230VAC | Earth leakage current < 500μA(rms) @ 264VAC, touch current < 70μA(rms) @ 264VAC |
Protections & Functions
| Parameter | Details |
|---|---|
| Overload | 105~150% rated output power, Protection type: Hiccup after 3 sec, recovers automatically after fault condition is removed |
| Over Voltage | 13.2~15.6V (12V), 16.5~19.5V (15V), 19.8~23.4V (18V), 26.4~31.2V (24V), 29.7~35.1V (27V), 39.6~46.8V (36V), 52.8~62.4V (48V), 59.4~67.5V (54V). Protection type: Shut down o/p voltage, re-power on to recover |
| Over Temperature | Protection type: Shut down o/p voltage, recovers automatically after temperature goes down |
| External Fan Supply | 12V@0.5A for driving a fan / 12V@0.2A for without fan; (23CFM) tolerance -15% ~+15% at main output 20% rated current |
| Remote Sense | The remote sensing compensates voltage drop on the load wiring up to 0.5V |
| Power Good/Power Fail (optional) | 500ms>PG>10ms; The TTL signal goes high with 10ms to 500ms delay after power set up; The TTL signal goes low at least 1ms before Vo below 90% of rated value; TTL(0~1V), TTH(2~5V) |
Environmental Specifications
| Parameter | Working Temp. | Working Humidity | Storage Temp., Humidity | Temp. Coefficient | Vibration |
|---|---|---|---|---|---|
| -40~+80°C (Refer to "Derating Curve") | 20~90% RH non-condensing | -40~+85°C, 10~95% RH non-condensing | ±0.03%/°C (0~50°C) | 10~500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes |
Safety and EMC Compliance
Safety Standards
Certifications include: CB (IEC62368-1, IEC60335-1, IEC61558-1/-2-16, IEC60601-1), TUV (BS EN/EN62368-1, BS EN/EN60335-1, BS EN/EN61558-1/-2-16, BS EN/EN60601-1 (3.2 Version)), UL (UL62368-1, ANSI/AAMI ES60601-1 (3.2 Version)), CCC (GB4943.1), RCM (AS/NZS 61558-1/-2-16), EAC (TPTC 004).
Isolation
- Isolation Level: Primary-Secondary: 2xMOPP, Primary-Earth: 1xMOPP, Secondary-Earth: 1xMOPP
- Over Voltage Category: IEC/EN 61558-1/-2-16 (OVC III, altitude up to 2000M), IEC/EN/UL 62368-1 (OVC II, altitude up to 5000M), IEC/EN 60335-1 (OVC II, altitude up to 5000M), IEC/EN 60601-1 (OVC II, altitude up to 4000M)
- Protective Extra-Low Voltage: IEC/EN61558-2-16 (SELV), IEC/EN/UL 62368-1 (SELV / ES1)
Withstand Voltage & Isolation Resistance
Withstand Voltage: I/P-O/P: 4KVAC, I/P-FG: 2KVAC, O/P-FG: 1.5KVAC
Isolation Resistance: I/P-O/P, I/P-FG, O/P-FG: 100M Ohms / 500VDC / 25°C / 70% RH
EMC Emission
| Parameter | Standard | Test Level / Note |
|---|---|---|
| Conducted & Radiated | BS EN/EN55032(CISPR32), BS EN/EN55011(CISPR11), BS EN/EN55014(CISPR32) | Class I: Class B, Class II: Class A; Class I: Class B |
| Harmonic Current | BS EN/EN61000-3-2 | Class A |
| Voltage Flicker | BS EN/EN61000-3-3 |
EMC Immunity
| Parameter | Standard | Test Level / Note |
|---|---|---|
| ESD | BS EN/EN61000-4-2 | Level 4, 15KV air; Level 4, 8KV contact |
| Radiated Susceptibility | BS EN/EN61000-4-3 | Level 3, 10V/m (80MHz~2.7GHz) |
| EFT/Burst | BS EN/EN61000-4-4 | Table 9, 9~28V/m (385MHz~5.78GHz) |
| Surge | BS EN/EN61000-4-5 | Level 3, 2KV |
| Conducted | BS EN/EN61000-4-6 | Level 4, 4KV/Line-FG; 2KV/Line-Line |
| Magnetic Field | BS EN/EN61000-4-8 | Level 3, 10V |
| Voltage Dips and interruptions | BS EN/EN61000-4-11 | Level 4, 30A/m; >95% dip 0.5 periods, 100% dip 1 periods, 30% dip 25 periods, >95% interruptions 250 periods |
MTBF
MTBF: 1696.4K hrs min. (Telcordia SR-332); 231.2K hrs min. (MIL-HDBK-217F, 25°C)
Diagrams and Curves
Block Diagram
The block diagram illustrates the power supply's architecture. It shows the input stage with EMI Filter, Rectifiers & PFC, followed by Power Switching controlled by PWM Control. The output stage includes Rectifiers & Filter. Control functions like Overload Protection (OLP), Over Voltage Protection (OVP), and a Detection Circuit are integrated. An optional Power Good/Power Fail (PG/PF) signal is available, along with a +12V FAN supply.
Derating Curve (Load vs. Ambient Temperature)
This curve shows the maximum output load capacity based on ambient temperature. For free air convection cooling, the maximum output power is 250W. For force-cooled operation with an external fan (23CFM), the maximum output power is 400W. Both convection modes show a decrease in load capacity as the ambient temperature rises from 0°C to 80°C. The 115VAC convection curve is lower than the 230VAC convection curve.
Output Derating VS Input Voltage
This graph indicates that the power supply maintains its rated output power (up to 100% load) across a wide input voltage range, from approximately 100VAC to 264VAC at 60Hz. Below 100VAC, the output derating begins.
Mechanical Specifications
Dimensions: 127mm (Length) x 76.2mm (Width) x 27.5mm (Height).
Mounting: Features four mounting holes with a diameter of 3.5mm.
Connectors
- AC Input Connector (CN1): JST B3P-VH or equivalent. Pins: 1 (AC/L), 2 (No Pin), 3 (AC/N). Mating Housing: JST VHR or equivalent. Terminal: JST SVH-21T-P1.1 or equivalent.
- FAN Connector (CN2): TKP 8812-2 or equivalent. Pins: 1 (DC COM), 2 (+12V). Mating Housing: TKP 2502 or equivalent. Terminal: TKP 8811 or equivalent.
- DC Output Connector: Uses M3.5 Pan HD screws in 2 positions for -V and +V terminals. Recommended torque: 8 lbs-in (90 cNm) max.
Notes on Installation
- Class I System: Mounting holes marked with [earth symbol] must be connected to safety earth.
- Class II System: Connection to safety earth is unnecessary.
- HS1, HS2, HS3, HS4 must not be shorted.
Installation Manual
For detailed installation instructions, please refer to: MEAN WELL Installation Search.
Global Trade Item Number (GTIN)-MEAN WELL Switching Power Supply Manufacturer
