MEAN WELL LPP-100-27 is a single-output, open-frame AC/DC power supply rated 27 V, 3.8 A and 102.6 W. Built-in active PFC and wide-range input support equipment integration. Apply the model-specific cooling and input limits when sizing the load.
Product Datasheet
Download MEAN WELL LPP-100 Datasheet (PDF)
The LPP-100 section is on PDF pages 9, 10. Refer to the complete mechanical drawings and notes when planning installation.
Model and Selection
| Complete model |
LPP-100-27. |
| Series and format |
LPP-100 single-output open-frame switching power supply. |
| Power-factor correction |
Built-in active PFC. |
| Cooling selection |
Natural convection subject to the voltage-specific derating curve; forced airflow extends the applicable thermal range. |
| Factory burn-in |
100% full-load burn-in test. |
Output Ratings
| Nominal output |
27 VDC. |
| Catalogue-rated output |
3.8 A / 102.6 W. |
| Continuous current range |
0–3.8 A. |
| Ripple and noise, maximum |
150 mVp-p. |
| Voltage adjustment |
25.7–29.7 V using +V ADJ. |
| Voltage tolerance |
±1.0%, including set-up tolerance, line regulation and load regulation. |
| Line / load regulation |
±0.5% / ±0.5%. |
| Efficiency, typical |
83%. |
Unless otherwise stated, parameters are measured at 230 VAC input, rated load and 25°C ambient. Ripple/noise uses 20 MHz bandwidth and a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors.
Input and Timing
| AC input |
85–264 VAC; 47–63 Hz. |
| DC input |
120–370 VDC. |
| AC input current, typical |
1.7 A at 115 VAC; 0.75 A at 230 VAC. |
| Cold-start inrush, typical |
30 A at 230 VAC. |
| Leakage current |
<2 mA at 240 VAC. |
| Set-up / rise time |
600 ms / 30 ms at 230 VAC; 1200 ms / 30 ms at 115 VAC, full load. |
| Hold-up time, typical |
28 ms at 230 VAC and 28 ms at 115 VAC, full load. |
| Power factor, typical |
PF >0.95 at 230 VAC and >0.98 at 115 VAC, full load. |
| Switching frequencies |
PFC 67 kHz; PWM 134 kHz. |
Protection
| Short circuit / overload |
105–150% of rated output power; constant-current limiting, with automatic recovery after fault removal. |
| Overvoltage |
31–36.45 V; output shuts down, re-power on to recover. |
Cooling and Environment
| Working ambient |
−10 to +60°C, subject to the horizontal-installation derating curves. |
| Natural convection |
100% load through 50°C, decreasing along the curve to 60% at 60°C. |
| Input-voltage derating |
At 60 Hz: 80% load at 85 VAC, rising to 100% at 115 VAC and remaining at 100% through 264 VAC. |
| Altitude derating |
Above 2000 m, reduce the allowable ambient by 3.5°C per 1000 m for fanless cooling, or 5°C per 1000 m with fan cooling. |
| Operating humidity |
20–90% RH, non-condensing. |
| Storage |
−20 to +85°C; 10–95% RH. |
| Temperature coefficient |
±0.05%/°C over 0–50°C. |
| Vibration |
10–500 Hz, 2 G; 10 minutes per cycle and 60 minutes along each X, Y and Z axis. |
Apply the output table and all applicable derating limits together. Forced airflow changes the thermal limit; it does not increase the continuous electrical rating.
Dimensions and Installation
| Dimensions, L × W × H |
222 × 62 × 33.6 mm. |
| Mounting |
Four Ø3.5 mm holes; 212 × 52 mm hole-center spans, with 5 mm edge offsets. General drawing tolerance ±1 mm. |
| Underside clearance |
The mechanical drawing shows 3 mm maximum underside projection; allow clearance for safe installation. |
| Safety earth |
Grounding is required. CN1 pin 5 is safety ground; connect the marked FG point as shown. |
| Fitted fuse and adjustment |
AC fuse F4A/250V and +V ADJ control are identified in the drawing. |
Use the complete mechanical drawing for connector orientation, mounting and clearance. Install this component power supply in a suitable final-equipment enclosure.
Connections and Mating Parts
| AC input CN1 |
JST B5P-VH or equivalent. Pin 1 AC/L; pins 2 and 4 no pin; pin 3 AC/N; pin 5 FG. |
| DC output CN2 |
JST B8P-VH or equivalent. Pins 1–4 −V; pins 5–8 +V. |
| Mating housings |
JST VHR housing family or equivalent, selected to match each connector circuit count. |
| Mating contacts |
JST SVH-21T-P1.1 or equivalent. |
Select the complete mating housing for the required circuit count and wire assembly. Loose mating parts, an external fan and mounting hardware are not stated as included.
Safety and EMC
| Safety approvals |
UL62368-1, TUV BS EN/EN62368-1 and EAC TP TC004 approved; the cover also identifies IEC62368-1 CB certification. |
| Withstand voltage |
Input/output 3 kVAC; input/FG 2 kVAC; output/FG 0.5 kVAC. |
| Insulation resistance |
Input/output, input/FG and output/FG: 100 MΩ at 500 VDC, 25°C and 70% RH. |
| Emissions |
BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC020. |
| Immunity |
BS EN/EN61000-4-2,3,4,5,6,8,11; BS EN/EN55035, light-industry level; EAC TP TC020. |
EMC testing uses a 360 × 360 mm metal plate, 1 mm thick. Reconfirm EMC compliance in the completed equipment with its actual wiring and mounting. Component approvals do not certify the complete system.
Weight and Reliability
| Single-unit catalogue reference weight |
510 g from the explicit per-unit PACKING value; a catalogue reference rather than measured net or shipping weight. |
| Packing reference |
0.51 kg per unit; 24 pieces / 13.9 kg / 1.63 CUFT. |
| MTBF, minimum estimates |
2586.7 thousand hours, Telcordia SR-332 (Bellcore); 287.9 thousand hours, MIL-HDBK-217F at 25°C. |
| Manufacturer warranty |
3-year manufacturer warranty, subject to applicable terms. |
| Catalogue revision |
LPP-100-SPEC, 2024-10-30; PDF pages 9–10. |