MEAN WELL LPF-40D series: dimmable constant current LED driver - LPF-40D-20

Description

MEAN WELL LPF-40D-20 LED Driver

The MEAN WELL LPF-40D-20 is a dimmable constant current LED driver with 20 V rated DC output, 2 A rated current and 40 W rated power. Its constant current operating region is 12-20 V. The plastic housing uses Class II insulation and IP67 protection, with active PFC and free-air convection cooling.

Download MEAN WELL LPF-40D Datasheet (PDF)

Download MEAN WELL LED Installation Manual (PDF)

Catalog pages 94-101; model specifications on page 95. Temperature, dimming and wiring conditions below apply to this model.

Model selection

Parameter Details
Full model / series LPF-40D-20 / LPF-40D
Model code LPF-40D identifies this series; the final voltage code 20 identifies the 20 V output version.
Output mode and load selection Directly drives a compatible LED load at 2 A within 12-20 V. Use the D-type dimming interface below; this driver is not suitable for use with an additional LED driver.
Load limits Do not exceed 2 A or 40 W; apply input and temperature derating. Use the actual rated power, not the series number, for load sizing.
Applications LED panel lighting, downlights, decorative lighting, tunnel lighting and moving signs.

Output performance

Parameter Details
Rated output 20 V DC; 2 A; 40 W.
Constant current region 12-20 V.
Current ripple / tolerance Maximum current ripple: 5.0% at rated current. Current tolerance: ±5.0%.
Setup / rise time 1000 ms / 80 ms at 115 VAC; 500 ms / 80 ms at 230 VAC. Setup is measured at the first cold start; repeated switching can increase setup time.
Hold-up time 16 ms typical at 115 VAC and 230 VAC.
Efficiency and measurement conditions 86% typical. Unless specifically stated otherwise, specifications are measured at 230 VAC, rated current and 25°C ambient. Typical values are not guarantees at every operating point.

Input and electrical limits

Parameter Details
Input range / frequency 90-305 VAC or 127-431 VDC; 47-63 Hz AC. Apply the low-input derating curve; full input-range availability does not imply full load at the lowest voltage.
Low-input derating The 60 Hz static characteristic shows 80% load at 90 VAC, rising to 100% at 100 VAC; 100% is shown from 100 to 305 VAC, subject to temperature limits.
AC current 0.6 A / 0.3 A / 0.25 A at 115 / 230 / 277 VAC respectively.
Power factor At full load: PF ≥0.97 at 115 VAC, ≥0.95 at 230 VAC and ≥0.92 at 277 VAC.
Total harmonic distortion THD <20% at load ≥60% with 115/230 VAC, or load ≥75% with 277 VAC. Refer to the model curves for behavior at other loads.
Inrush current 50 A typical cold start at 230 VAC; pulse width 210 µs measured at 50% peak current, per the catalog NEMA 410 reference.
Circuit-breaker reference Maximum catalog quantity at 230 VAC on a 16 A breaker: 12 units with type B or 20 with type C. Coordinate the complete circuit and inrush conditions.
Leakage current <0.75 mA at 240 VAC.

Protection

Parameter Details
Overcurrent 95-108% of rated output current; constant current limiting, with automatic recovery after the fault is removed.
Short circuit / low output voltage Hiccup mode; automatic recovery after fault removal.
Overvoltage 23-27 V; output shutdown; re-power on to recover.
Overtemperature Output shutdown; re-power on to recover.

Dimming and external controls

Parameter Details
3-in-1 interface Adjust the constant current level between DIM+ and DIM- using one of: additive 1-10 VDC, a 10 V PWM signal, or resistance. Typical dimming source current from the driver is 100 µA.
Analog voltage The plotted range is 1-10 VDC for 10-100% output current.
PWM control Use a 10 V PWM signal at 100 Hz-3 kHz. The plotted duty-cycle range is 10-100%, corresponding to 10-100% output current.
Resistance control The plotted range is 10 kΩ/N to 100 kΩ/N for 10-100% current, where N is the number of drivers operated synchronously. For one driver this is 10-100 kΩ.
Wiring and isolation DIM+ is purple; DIM- is pink. Do not connect DIM- to -V. The installation manual states that LPF dimming circuitry is not isolated from the secondary output; use a compatible controller.
Zero-brightness switching Do not treat the 10% dimming endpoint as OFF. For 0% brightness, the catalog uses an external switch and relay to turn the lighting fixture on/off, or directs the installer to MEAN WELL for other options.
Controller insulation requirement This model has 22 AWG dimming conductors. The installation manual limits standalone supplies with dimming wires smaller than 18 AWG to SELV dimming controllers/networks; contact MEAN WELL for a proposed FELV controller application.

Environment and thermal design

Parameter Details
Case temperature Tcase -40 to +80°C; maximum case temperature +80°C. These are case-temperature limits, not ambient ratings. Measure at the tc point shown in the mechanical drawing.
Ambient temperature and derating Horizontal installation: ambient load curve shows 100% through +50°C, then a linear decrease to 60% at +70°C. Keep the case measurement point within the separate Tcase limit.
Cooling / orientation Fanless, free-air convection. Mount in the horizontal direction shown in the mechanical drawing. Nonstandard orientation or elevated ambient temperature requires output-current derating.
Ingress protection Fully encapsulated IP67 plastic housing; catalog suitability includes dry, damp and wet locations. Provide protected wiring and connections and follow the installation manual. Do not immerse or operate the driver in water.
Humidity / storage Operating humidity: 20-95% RH, non-condensing. Storage: -40 to +80°C and 10-95% RH.
Altitude For this fanless driver, reduce the ambient-temperature limit by 3.5°C per 1000 m above 2000 m altitude.
Temperature coefficient / vibration ±0.03%/°C over 0-50°C. Vibration: 10-500 Hz, 5 G; 12 min/cycle, 72 min on each X, Y and Z axis.

Dimensions, wiring and installation

Parameter Details
Dimensions / mounting 162.5 x 43 x 32 mm (L x W x H), drawing tolerance ±1 mm. Two Ø3.6 mm mounting features; locate the hardware from the model drawing.
Input cable SJOW 17 AWG x 2 conductors and H05RN-F 2 x 1.0 mm²; 300 ±20 mm. Brown = AC/L, blue = AC/N.
Output cable Style 2464: 18 AWG x 2 for +V/-V and 22 AWG x 2 for DIM+/DIM-; 300 ±20 mm. Red = +V, black = -V, purple = DIM+, pink = DIM-.
Insulation / grounding Class II plastic housing with no FG lead shown. Class II insulation and Class 2 power-unit classification are different characteristics.
Installation clearances Disconnect the utility before installation or maintenance and prevent unintended reconnection. Keep ventilation clear and do not stack objects on the unit. Maintain 10-15 cm clearance when an adjacent device is a heat source.
Cable and system protection Use approved primary and secondary cables rated at least for the driver current. Provide system-level insulation/isolation around interconnections, and enclose single-insulated wires. Where waterproof connectors are used, ensure a tight linkage that prevents water entering the system.
ErP installation condition To meet the datasheet condition for the latest lighting-fixture ErP requirements, use this driver behind a switch; do not keep it permanently connected to the mains.
BSMI integration condition For BSMI certification when connecting peripheral equipment, the LED installation manual requires LPF series to be installed with a fireproof enclosure rated V1 or higher.
Servicing Do not remove the case yourself. Faults must be examined by a qualified technician. Damaged external flexible cable must be replaced by the manufacturer, its service agent or a similarly qualified person.
External control items Select a compatible dimming controller and, when full OFF is required, the switch/relay arrangement in the catalog. These are system-level connection items; the diagram does not identify a supplied accessory set or dedicated order codes.

Standards and catalog references

Parameter Details
Listed safety references UL 8750; CSA C22.2 No. 250.0-08; ENEC BS EN/EN 61347-1 and BS EN/EN 61347-2-13 independent; BS EN/EN 62384; EAC TP TC 004; GB/T 19510.1 and GB/T 19510.213. The listed IP rating applies to the selected housing configuration; UL 60950-1 is a design reference, not listed as an approval.
Classifications Class II insulation, Class 2 power unit and SELV are identified in the catalog.
Withstand / insulation resistance Input-to-output withstand: 3.75 kVAC. Input-to-output insulation resistance: 100 MΩ at 500 VDC, 25°C and 70% RH.
EMC emissions BS EN/EN 55015; BS EN/EN 61000-3-2 Class C at load ≥60%; BS EN/EN 61000-3-3; GB/T 17743; GB 17625.1; EAC TP TC 020.
EMC immunity BS EN/EN 61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN 61547, light-industry level; line-to-line surge immunity 2 kV; EAC TP TC 020.
System assessment This is a component power supply. The final equipment manufacturer must re-qualify EMC for the complete installation; wiring, load and enclosure affect system performance.
Catalog unit mass 450 g (0.45 kg) per unit from the PACKING field: catalog packing reference per unit, not a measured net weight or total shipping-package weight.
Reliability / service-life references Minimum MTBF: 3439.0 thousand hours per Telcordia SR-332 and 394.9 thousand hours per MIL-HDBK-217F at 25°C. The catalog states typical life expectancy >50,000 hours at tc about 75°C or less. Life curves depend on case temperature; these are not guaranteed service-life values.
Manufacturer warranty reference The manufacturer datasheet lists a five-year warranty; the manufacturer warranty statement defines its terms.

MEAN WELL LPF-40D series: dimmable constant current LED driver - LPF-40D-20

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MEAN WELL LPF-40D-20 LED Driver The MEAN WELL LPF-40D-20 is a dimmable constant current LED driver with 20 V rated... Read more

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    Description

    MEAN WELL LPF-40D-20 LED Driver

    The MEAN WELL LPF-40D-20 is a dimmable constant current LED driver with 20 V rated DC output, 2 A rated current and 40 W rated power. Its constant current operating region is 12-20 V. The plastic housing uses Class II insulation and IP67 protection, with active PFC and free-air convection cooling.

    Download MEAN WELL LPF-40D Datasheet (PDF)

    Download MEAN WELL LED Installation Manual (PDF)

    Catalog pages 94-101; model specifications on page 95. Temperature, dimming and wiring conditions below apply to this model.

    Model selection

    Parameter Details
    Full model / series LPF-40D-20 / LPF-40D
    Model code LPF-40D identifies this series; the final voltage code 20 identifies the 20 V output version.
    Output mode and load selection Directly drives a compatible LED load at 2 A within 12-20 V. Use the D-type dimming interface below; this driver is not suitable for use with an additional LED driver.
    Load limits Do not exceed 2 A or 40 W; apply input and temperature derating. Use the actual rated power, not the series number, for load sizing.
    Applications LED panel lighting, downlights, decorative lighting, tunnel lighting and moving signs.

    Output performance

    Parameter Details
    Rated output 20 V DC; 2 A; 40 W.
    Constant current region 12-20 V.
    Current ripple / tolerance Maximum current ripple: 5.0% at rated current. Current tolerance: ±5.0%.
    Setup / rise time 1000 ms / 80 ms at 115 VAC; 500 ms / 80 ms at 230 VAC. Setup is measured at the first cold start; repeated switching can increase setup time.
    Hold-up time 16 ms typical at 115 VAC and 230 VAC.
    Efficiency and measurement conditions 86% typical. Unless specifically stated otherwise, specifications are measured at 230 VAC, rated current and 25°C ambient. Typical values are not guarantees at every operating point.

    Input and electrical limits

    Parameter Details
    Input range / frequency 90-305 VAC or 127-431 VDC; 47-63 Hz AC. Apply the low-input derating curve; full input-range availability does not imply full load at the lowest voltage.
    Low-input derating The 60 Hz static characteristic shows 80% load at 90 VAC, rising to 100% at 100 VAC; 100% is shown from 100 to 305 VAC, subject to temperature limits.
    AC current 0.6 A / 0.3 A / 0.25 A at 115 / 230 / 277 VAC respectively.
    Power factor At full load: PF ≥0.97 at 115 VAC, ≥0.95 at 230 VAC and ≥0.92 at 277 VAC.
    Total harmonic distortion THD <20% at load ≥60% with 115/230 VAC, or load ≥75% with 277 VAC. Refer to the model curves for behavior at other loads.
    Inrush current 50 A typical cold start at 230 VAC; pulse width 210 µs measured at 50% peak current, per the catalog NEMA 410 reference.
    Circuit-breaker reference Maximum catalog quantity at 230 VAC on a 16 A breaker: 12 units with type B or 20 with type C. Coordinate the complete circuit and inrush conditions.
    Leakage current <0.75 mA at 240 VAC.

    Protection

    Parameter Details
    Overcurrent 95-108% of rated output current; constant current limiting, with automatic recovery after the fault is removed.
    Short circuit / low output voltage Hiccup mode; automatic recovery after fault removal.
    Overvoltage 23-27 V; output shutdown; re-power on to recover.
    Overtemperature Output shutdown; re-power on to recover.

    Dimming and external controls

    Parameter Details
    3-in-1 interface Adjust the constant current level between DIM+ and DIM- using one of: additive 1-10 VDC, a 10 V PWM signal, or resistance. Typical dimming source current from the driver is 100 µA.
    Analog voltage The plotted range is 1-10 VDC for 10-100% output current.
    PWM control Use a 10 V PWM signal at 100 Hz-3 kHz. The plotted duty-cycle range is 10-100%, corresponding to 10-100% output current.
    Resistance control The plotted range is 10 kΩ/N to 100 kΩ/N for 10-100% current, where N is the number of drivers operated synchronously. For one driver this is 10-100 kΩ.
    Wiring and isolation DIM+ is purple; DIM- is pink. Do not connect DIM- to -V. The installation manual states that LPF dimming circuitry is not isolated from the secondary output; use a compatible controller.
    Zero-brightness switching Do not treat the 10% dimming endpoint as OFF. For 0% brightness, the catalog uses an external switch and relay to turn the lighting fixture on/off, or directs the installer to MEAN WELL for other options.
    Controller insulation requirement This model has 22 AWG dimming conductors. The installation manual limits standalone supplies with dimming wires smaller than 18 AWG to SELV dimming controllers/networks; contact MEAN WELL for a proposed FELV controller application.

    Environment and thermal design

    Parameter Details
    Case temperature Tcase -40 to +80°C; maximum case temperature +80°C. These are case-temperature limits, not ambient ratings. Measure at the tc point shown in the mechanical drawing.
    Ambient temperature and derating Horizontal installation: ambient load curve shows 100% through +50°C, then a linear decrease to 60% at +70°C. Keep the case measurement point within the separate Tcase limit.
    Cooling / orientation Fanless, free-air convection. Mount in the horizontal direction shown in the mechanical drawing. Nonstandard orientation or elevated ambient temperature requires output-current derating.
    Ingress protection Fully encapsulated IP67 plastic housing; catalog suitability includes dry, damp and wet locations. Provide protected wiring and connections and follow the installation manual. Do not immerse or operate the driver in water.
    Humidity / storage Operating humidity: 20-95% RH, non-condensing. Storage: -40 to +80°C and 10-95% RH.
    Altitude For this fanless driver, reduce the ambient-temperature limit by 3.5°C per 1000 m above 2000 m altitude.
    Temperature coefficient / vibration ±0.03%/°C over 0-50°C. Vibration: 10-500 Hz, 5 G; 12 min/cycle, 72 min on each X, Y and Z axis.

    Dimensions, wiring and installation

    Parameter Details
    Dimensions / mounting 162.5 x 43 x 32 mm (L x W x H), drawing tolerance ±1 mm. Two Ø3.6 mm mounting features; locate the hardware from the model drawing.
    Input cable SJOW 17 AWG x 2 conductors and H05RN-F 2 x 1.0 mm²; 300 ±20 mm. Brown = AC/L, blue = AC/N.
    Output cable Style 2464: 18 AWG x 2 for +V/-V and 22 AWG x 2 for DIM+/DIM-; 300 ±20 mm. Red = +V, black = -V, purple = DIM+, pink = DIM-.
    Insulation / grounding Class II plastic housing with no FG lead shown. Class II insulation and Class 2 power-unit classification are different characteristics.
    Installation clearances Disconnect the utility before installation or maintenance and prevent unintended reconnection. Keep ventilation clear and do not stack objects on the unit. Maintain 10-15 cm clearance when an adjacent device is a heat source.
    Cable and system protection Use approved primary and secondary cables rated at least for the driver current. Provide system-level insulation/isolation around interconnections, and enclose single-insulated wires. Where waterproof connectors are used, ensure a tight linkage that prevents water entering the system.
    ErP installation condition To meet the datasheet condition for the latest lighting-fixture ErP requirements, use this driver behind a switch; do not keep it permanently connected to the mains.
    BSMI integration condition For BSMI certification when connecting peripheral equipment, the LED installation manual requires LPF series to be installed with a fireproof enclosure rated V1 or higher.
    Servicing Do not remove the case yourself. Faults must be examined by a qualified technician. Damaged external flexible cable must be replaced by the manufacturer, its service agent or a similarly qualified person.
    External control items Select a compatible dimming controller and, when full OFF is required, the switch/relay arrangement in the catalog. These are system-level connection items; the diagram does not identify a supplied accessory set or dedicated order codes.

    Standards and catalog references

    Parameter Details
    Listed safety references UL 8750; CSA C22.2 No. 250.0-08; ENEC BS EN/EN 61347-1 and BS EN/EN 61347-2-13 independent; BS EN/EN 62384; EAC TP TC 004; GB/T 19510.1 and GB/T 19510.213. The listed IP rating applies to the selected housing configuration; UL 60950-1 is a design reference, not listed as an approval.
    Classifications Class II insulation, Class 2 power unit and SELV are identified in the catalog.
    Withstand / insulation resistance Input-to-output withstand: 3.75 kVAC. Input-to-output insulation resistance: 100 MΩ at 500 VDC, 25°C and 70% RH.
    EMC emissions BS EN/EN 55015; BS EN/EN 61000-3-2 Class C at load ≥60%; BS EN/EN 61000-3-3; GB/T 17743; GB 17625.1; EAC TP TC 020.
    EMC immunity BS EN/EN 61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN 61547, light-industry level; line-to-line surge immunity 2 kV; EAC TP TC 020.
    System assessment This is a component power supply. The final equipment manufacturer must re-qualify EMC for the complete installation; wiring, load and enclosure affect system performance.
    Catalog unit mass 450 g (0.45 kg) per unit from the PACKING field: catalog packing reference per unit, not a measured net weight or total shipping-package weight.
    Reliability / service-life references Minimum MTBF: 3439.0 thousand hours per Telcordia SR-332 and 394.9 thousand hours per MIL-HDBK-217F at 25°C. The catalog states typical life expectancy >50,000 hours at tc about 75°C or less. Life curves depend on case temperature; these are not guaranteed service-life values.
    Manufacturer warranty reference The manufacturer datasheet lists a five-year warranty; the manufacturer warranty statement defines its terms.

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