The MEAN WELL LSP-160R-4.2W is a slim wafer-connector AC/DC power supply with active PFC, 4.2 V output and a 32 A / 134.4 W standard rating. Its higher-output rating is 40 A / 168 W under the specified input, temperature and aluminum-plate conditions. The 20 mm-high fanless enclosure includes a DC OK active signal and the R-option two-unit current-sharing function.
Product Datasheet
Download MEAN WELL LSP-160 Datasheet (PDF)
The LSP-160 section is on PDF pages 1, 2, 3, 4, 5, 6, 7. Refer to the complete mechanical drawings and notes when planning installation.
Model and Output Ratings
| Full model |
LSP-160R-4.2W |
| Series |
LSP-160 |
| Function option |
R: DC OK active signal and current sharing for redundancy |
| Connection suffix |
W: wafer-connector version, available by request |
| DC output voltage |
4.2 V |
| Rated output current |
32 A |
| Rated output power |
134.4 W |
| Higher-output operating current |
40 A |
| Higher-output operating power |
168 W |
| Output voltage adjustment |
4–4.5 V |
| Adjustment for higher-output operation |
4–4.2 V |
| Maximum ripple and noise |
200 mVp-p |
| Voltage tolerance |
±2.0% |
| Line regulation |
±0.5% |
| Load regulation |
±1.0%; ±2.0% at 40 A load |
The higher-output 40 A / 168 W rating requires 200–264 VAC input, −20 to +50°C ambient and the specified aluminum-plate installation. Use the corresponding restricted voltage-adjustment range. The input, ambient-temperature and case-temperature limits apply together.
This is a conditional operating rating; select the load from the model-specific voltage, current and power limits. The series designation is not the output-power rating of every voltage version.
Input and Electrical Performance
| Input voltage range |
100–264 VAC; 141–370 VDC |
| Input frequency |
47–63 Hz |
| AC surge-input withstand |
300 VAC for 5 seconds |
| Power factor correction |
Built-in active PFC |
| Typical power factor at full load |
PF ≥ 0.94 at 230 VAC; PF ≥ 0.98 at 115 VAC |
| Typical efficiency |
87.5% |
| Typical AC input current |
2.2 A at 115 VAC; 1.1 A at 230 VAC |
| Typical cold-start inrush current |
45 A at 115 VAC; 85 A at 230 VAC |
| Leakage current |
Less than 0.75 mA at 240 VAC |
| Set-up / rise time at full load |
2000 / 110 ms at 230 VAC; 3000 / 110 ms at 115 VAC |
| Typical hold-up time |
8 ms at 230 VAC; 8 ms at 115 VAC |
Unless otherwise specified, parameters are measured at 230 VAC input, rated load and 25°C ambient. Ripple and noise are measured with 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation.
The 300 VAC / 5-second withstand figure is a transient input condition; the normal AC operating range remains 100–264 VAC.
Protection
| Short-circuit protection |
Hiccup mode; automatic recovery after the fault is removed |
| Overload threshold |
130–150% of the 160 W output-power reference |
| Overload behavior |
Constant-current limiting; a further load increase causes hiccup protection, with automatic recovery after the fault is removed |
| Overvoltage threshold |
4.62–5.46 V |
| Overvoltage recovery |
Output shutdown; reapply input power to recover |
| Overtemperature recovery |
Output shutdown; reapply input power after the temperature has fallen |
DC OK Status
| DC OK interface |
Optocoupler collector-emitter status output |
| DC OK connection, CN2 |
Pin 1: DC OK +V; pin 2: DC COM |
| DC OK maximum rating |
15 VDC / 10 mA, resistive load |
| DC OK state |
Collector-emitter conducting when the PSU is on; open when the PSU is off |
| Fault indication |
Normal: low; short circuit / overload: hiccup; overvoltage / overtemperature / breakdown: high |
Use the DC OK optocoupler interface within its 15 VDC / 10 mA rating. The DC OK signal connection is distinct from the main +V / −V power terminals. The LED provides a separate power-on indication.
Two-Unit Current Sharing
| Current-sharing availability |
Built in for this R-option model |
| Parallel-unit limit |
2 units |
| Output-voltage matching |
Difference must be less than 0.2 V |
| Current-sharing connection, CN1 |
Pin 1: CS+; pin 2: CS− |
| Parallel-operation load limit |
The maximum load must not exceed the rated power |
Connect CS+ to CS+ and CS− to CS− between the two units, with the main +V outputs and −V outputs connected in parallel as shown in the function diagram. Do not reverse the CS connections. Fine-adjust the output voltage before paralleling; the function manual identifies the adjustment as SVR1 and the mechanical drawing marks it Vo ADJ.
When total output current is below (30% of rated current) × (number of units), current sharing may be unbalanced and one LED may flash without affecting normal operation. Keep the stated parallel-load limit; two connected units do not establish an unrestricted doubled power rating.
Connections and Optional Mating Parts
| AC input assignment, TB1 |
Pin 1: AC/L; pin 3: AC/N; pin 5: FG |
| DC output assignment |
Pins 1 and 2: +V; pins 3 and 4: −V |
| Signal-board connector references |
CN1 / CN2: JST B2B-PH-K-S or equivalent |
| Signal mating-part references |
JST PHR-2 and JST SPH-002T-P0.5S, or equivalent |
| Input mating housing |
JS-1391-05 |
| Input terminal references |
JS-1390-05 and JS-2420-TL |
| DC output mating housing |
1EE4LSP-160F |
| DC output terminal reference |
1EE4LSP-160M |
Connect protective earth to FG and observe the input and output assignments in the mechanical drawing. CN2 is the DC OK signal port. CN1 carries the current-sharing signals for this R-option unit.
Select mating parts against the connector references above and confirm the required parts with the order. CN1 and CN2 mating cables are available by request; the optional signal-cable order code is 1FF5LSP-160-CS. Confirm the intended CN1 or CN2 connection when ordering.
Cooling and Operating Limits
| Cooling and mounting orientation |
Fanless free-air convection; horizontal installation for the published curves |
| Working temperature |
−30 to +70°C, subject to the operating and derating limits |
| Thermal curve with the specified aluminum plate |
100% rated current through 50°C; 60% at 70°C |
| Without aluminum plate, at 230 VAC |
65% through 50°C; reduce to 30% at 70°C |
| Without aluminum plate, at 100 VAC |
45% through 50°C; reduce to 30% at 70°C |
| Input-voltage load curve, 60 Hz |
80% at 100 VAC; 100% at 110–264 VAC |
| Case-temperature limit |
Tc up to 90°C at the indicated case measurement point |
| Operating altitude |
Up to 5000 m, with altitude derating |
| Working humidity |
20–90% RH, non-condensing |
| Storage temperature and humidity |
−40 to +85°C; 10–95% RH, non-condensing |
| Temperature coefficient |
±0.03%/°C from 0 to 50°C |
| Vibration |
10–500 Hz, 5 G; 10 minutes per cycle and 60 minutes on each X, Y and Z axis |
For the aluminum-plate curves, mount the unit firmly at the center of a smooth, flat 380 × 380 × 3 mm aluminum plate, or an enclosure surface of the same size. The mounting surface may be coated with thermal grease to improve thermal contact. The installation drawing shows M3 × 4 screws.
Higher-output operation starts at −20°C and requires 200–264 VAC and −20 to +50°C ambient. The general working-temperature range does not authorize that higher rating at all temperatures or input voltages. Observe the separately shown no-plate limits when the additional heat-spreading plate is absent.
Above 2000 m, reduce the allowable ambient temperature by 5°C for every additional 1000 m. Apply all relevant input, ambient and Tc restrictions together.
Safety and EMC
| Catalogue-listed approvals |
UL 62368; TUV BS EN / EN 62368; CCC GB 4943.1; EAC TP TC 004; BSMI CNS 14336-1 |
| Household-appliance safety reference |
Design refers to BS EN / EN 60335-1 |
| Withstand voltage |
Input–output: 3.75 kVAC; input–FG: 2 kVAC; output–FG: 1.25 kVAC |
| Isolation resistance |
Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH |
| EMC emission |
BS EN / EN 55032, GB 17625.1 and GB/T 9254.1, Class B; BS EN / EN 55014 and 61000-3-2/-3; EAC TP TC 020; BSMI CNS 13438 |
| EMC immunity |
BS EN / EN 61000-4-2/-3/-4/-5/-6/-8/-11; 61000-6-2 (50082-2); 55035; heavy-industry level, criterion A; EAC TP TC 020 |
The BS EN / EN 60335-1 entry is a design reference. The power supply is a component for integration into final equipment; the completed equipment must be checked against the applicable EMC requirements.
Mechanical Data and Supply Scope
| Dimensions, L × W × H |
194 × 55 × 20 mm |
| Case number |
279 |
| Mechanical-drawing tolerance |
±1 mm |
| Mounting holes |
Four holes, diameter 3.3 mm |
| Enclosure treatment |
Semi-potting for high-moisture environments |
| Mass, catalogue PACKING reference per unit |
356 g |
| Catalogue packing |
0.356 kg; 30 units / 11.68 kg / 0.6 CUFT |
| Minimum MTBF |
699.54K hours, Telcordia TR/SR-332 (Bellcore); 282.71K hours, MIL-HDBK-217F at 25°C |
| Catalogue warranty |
3 years |
Use the Tc location and mounting layout in the model-specific T or W mechanical drawing. Semi-potting does not establish an ingress-protection rating. The optional signal cable and requested mating-cable arrangements must be specified separately; the aluminum-plate drawing defines an installation requirement.
