MEAN WELL NHDD-40 series: DC/DC constant-current LED driver - NHDD-40-100

Description

NHDD-40-100 DC/DC constant-current LED driver

MEAN WELL NHDD-40-100 is a pin-mounted DC/DC constant-current LED driver for a nominal 380 VDC lighting bus. It supplies 100 mA from a 360–420 VDC input. Select the LED-string voltage so that the input-to-output drop stays between 40 and 80 VDC. The catalog lists 35 W and 350 V as typical output values; these figures must not override that required voltage-drop window.

Download MEAN WELL NHDD-40 Datasheet (PDF)

Combined catalog pages 7–12; NHDD-40 revision 2024-10-16.

Model and electrical selection

Complete model / construction NHDD-40-100; NHDD-40 series. The blank output-style suffix identifies the pin-mounted form. Fully encapsulated plastic housing; epoxy potting material rated UL94-V0.
Application / conversion DC/DC constant-current driver for a DC 380 V bus lighting system. It is a step-down application: the LED-string voltage must remain below the actual DC input by the stated amount.
Rated current / tolerance 100 mA output; current tolerance ±15%.
Typical output ratings 35 W typical output power and 350 VDC typical output voltage, as listed in the catalog. The series code 40 is not a replacement for the stated 35 W typical value.
Required voltage difference Input voltage minus output voltage must be at least 40 VDC and no more than 80 VDC. The total LED forward voltage must meet the same condition. The catalog warns that an incorrect voltage difference can cause unexpectedly high output current.
Typical-value selection limit The catalog also lists 380 VDC as typical input. Pairing 380 V input with 350 V output gives only a 30 V drop, which does not meet the required 40–80 V window. Do not select this pair as an approved operating point; confirm the intended LED load and operating point with the manufacturer. At 380 V input, the stated drop rule corresponds to 300–340 V output.
Current ripple 40% maximum at rated output current.
DC input range 360–420 VDC; typical input 380 VDC. Apply the voltage-drop window and thermal limits together.
Typical efficiency 94%, measured at 100 mA / 380 VDC per the catalog efficiency note; this test label does not remove the required input-to-output voltage difference.
Typical DC input current 0.1 A at 380 VDC input.
Setup time 500 ms at 380 VDC, measured at the first cold start. Repeated ON/OFF switching may increase the setup time.
Maximum shutdown input current 2 mA with PWM dimming OFF at 380 VDC input.

PWM control and protection

PWM / remote ON-OFF frequency 100–1000 Hz. Connect the control signal using the model-specific PWM DIM and return connections.
Enable / disable levels Power ON: leave the PWM DIM input open, or apply a high level above 1.5 V and up to 5 VDC. Power OFF: apply a level below 0.9 VDC or short the PWM input to its control return.
PWM output characteristic During PWM operation the output current becomes pulsed. The diagram uses a 5 V high level and 0 V low level, with the typical duty/current characteristic marked ±5% tolerance. This is separate from the ±15% output-current tolerance.
Switch control The illustrated switch across the PWM control connections gives 100% output when open and DIM OFF when closed. Leave the dimming input open if unused.
Short-circuit protection Hiccup mode; recovers automatically after the fault is removed.
Overtemperature protection Typical trip temperature Tj = 150°C at IC1, the main control IC. Output shuts down and recovers automatically after the temperature falls. This junction-temperature trip is not the allowed ambient or case temperature.
Input undervoltage / reverse polarity The driver shuts down when input is below 359 V. The specification states no damage for reverse polarity; connect the input with the correct polarity in normal use.

Thermal and environmental limits

Cooling / ambient temperature Fanless free-air convection. In horizontal mounting, the page 9 ambient-temperature curve shows 100% load from −30 to +40°C and ends at +40°C; do not extend the operating limit beyond that boundary.
Case temperature The separate page 9 case-temperature curve shows 100% load from −30 to +90°C in horizontal mounting. The specification lists +90°C as the maximum case temperature. Meet both the ambient and case limits.
Temperature-label clarification The working-temperature table labels −30 to +40°C as Tcase, while the separate plots identify that interval as ambient Ta and show case temperature up to +90°C. Retain the +40°C ambient limit and +90°C case maximum; confirm the table-label discrepancy with the manufacturer for the installation.
Working humidity 20–90% RH, non-condensing.
Storage temperature / humidity −40 to +80°C; 10–95% RH.
Temperature coefficient ±0.03%/°C over 0–50°C.
Vibration 10–500 Hz, 2G; 10 minutes per cycle, 60 minutes along each of the X, Y and Z axes.
Altitude derating For this fanless model, reduce the permitted ambient temperature by 3.5°C per 1000 m above 2000 m altitude.

Dimensions and wiring

Dimensions 32.1 × 20.5 × 12.5 mm (L × W × H). Mechanical drawing tolerance: ±1 mm.
Power / LED / control connections Bottom-view pins: 1 −Vout for LED negative; 2 +Vout for LED positive; 3 +Vin; 4 −Vin; 5 PWM DIM+. Other positions are N.C. The pin-style table does not provide a separate pin 6.
Wire / pin geometry Pin diameter 0.60 mm; projection 3.81 mm. The drawing states a pin tolerance of ±0.5 mm. Use the numbered bottom-view drawing and its spacing dimensions for the mating board.
Return wiring Do not connect −Vin to −Vout. For the PWM return, the drawing recommends a separate wire taken from −Vin; use that control return with PWM DIM+ and follow the pin-style drawing.
Soldering limits Wave soldering: 265°C for 5 seconds maximum. Manual soldering: 390°C for 3 seconds maximum.

Application and related equipment

Lighting applications Panel, indoor LED, recessed, linear, DC-house and industrial lighting, within the driver’s input, output and thermal limits.
DC-bus system examples The page 11 examples use an external UHP-1500-380E AC/DC supply for the DC bus and a DAP-04 for PWM control from the DALI bus. One arrangement shows a DLP-04L DALI-bus power supply and DALI dimmer; another shows a DLC-02 DALI-2 controller with the DALI dimmer. These are separate system components shown in application examples, not included accessories or a built-in DALI interface on the NHDD driver. Confirm each component and connection for the final system.
Driver-on-board option The catalog offers a manufacturer-supported driver-on-board (DOB) solution including circuit information and key components such as a driver IC or choke. Contact MEAN WELL for details; no complete order code for those components is specified in this catalog.
Luminaire integration The application note states that MEAN WELL PBM partners can support DC 380 V LED luminaires. Confirm the specific luminaire and system arrangement with the manufacturer.

Installation guidance

Installation reference scope The catalogue links the general LED installation manual, whose family list does not explicitly name NHDD. Use this model's DC input, output and control diagrams; the reference does not establish AC wiring or circuit-breaker ratings for this module.
Input, output and dimming return Do not connect -Vin to -Vout. Follow the NHDD pin or lead-wire drawing. The catalogue recommends using a separate PWM DIM- connection from the -Vin wiring; the wire version provides a separate black DIM- lead.
Input-to-LED voltage difference The catalogue lists 350 V output and 35 W as typical values, but also requires the input voltage to exceed the total LED forward voltage by at least 40 V and no more than 80 V to prevent unexpectedly high output current. Do not assume that 380 V input with 350 V output meets this joint condition; confirm the intended input and LED string with MEAN WELL.
PWM and on-off boundary Use the PWM DIM+ and DIM- control diagram at 100-1000 Hz. ON is above 1.5 V up to 5 V or with the input open; OFF is below 0.9 V or shorted. The switch diagram gives open = 100% ON and closed = OFF.
System control scope The DALI and DALI-2 devices in the application diagram are external system components. The NHDD module itself exposes PWM/remote on-off control; the diagram does not establish a built-in DALI interface for this module.
System EMC verification This module is a component of the final system. Verify EMC with the complete device and use a model-appropriate additional EMI filter if required.

Safety and reference data

Safety standards LVD BS EN/EN 61347 and EAC TP TC 004 approved, as listed in the catalog.
EMC emission / immunity Emission: BS EN/EN 55015 and EAC TP TC 020. Immunity: BS EN/EN 61000-4-2, -3, -4, -6 and -8, light-industry level, criteria A; EAC TP TC 020.
Complete-equipment EMC This driver is a component of the final system. Test EMI with the complete device. If additional filtering is needed, use the applicable EMC test report and the manufacturer’s EMI guidance to determine the filter circuit.
MTBF 15362.0 thousand hours minimum, Telcordia SR-332 (Bellcore); 2779.1 thousand hours minimum, MIL-HDBK-217F at 25°C.
Unit mass / warranty 15.6 g for this pin-mounted form, explicitly listed in the WEIGHT field; this is a catalog unit reference. The catalog states a 5-year manufacturer warranty, subject to the manufacturer’s terms.
Measurement conditions Unless otherwise specified: 380 VDC input, rated current and 25°C ambient. Typical values retain their stated test conditions and must be used together with the operating limits.
Download MEAN WELL LED Installation Manual (Catalog Reference)

MEAN WELL NHDD-40 series: DC/DC constant-current LED driver - NHDD-40-100

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NHDD-40-100 DC/DC constant-current LED driver MEAN WELL NHDD-40-100 is a pin-mounted DC/DC constant-current LED driver for a nominal 380 VDC... Read more

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    Description

    NHDD-40-100 DC/DC constant-current LED driver

    MEAN WELL NHDD-40-100 is a pin-mounted DC/DC constant-current LED driver for a nominal 380 VDC lighting bus. It supplies 100 mA from a 360–420 VDC input. Select the LED-string voltage so that the input-to-output drop stays between 40 and 80 VDC. The catalog lists 35 W and 350 V as typical output values; these figures must not override that required voltage-drop window.

    Download MEAN WELL NHDD-40 Datasheet (PDF)

    Combined catalog pages 7–12; NHDD-40 revision 2024-10-16.

    Model and electrical selection

    Complete model / construction NHDD-40-100; NHDD-40 series. The blank output-style suffix identifies the pin-mounted form. Fully encapsulated plastic housing; epoxy potting material rated UL94-V0.
    Application / conversion DC/DC constant-current driver for a DC 380 V bus lighting system. It is a step-down application: the LED-string voltage must remain below the actual DC input by the stated amount.
    Rated current / tolerance 100 mA output; current tolerance ±15%.
    Typical output ratings 35 W typical output power and 350 VDC typical output voltage, as listed in the catalog. The series code 40 is not a replacement for the stated 35 W typical value.
    Required voltage difference Input voltage minus output voltage must be at least 40 VDC and no more than 80 VDC. The total LED forward voltage must meet the same condition. The catalog warns that an incorrect voltage difference can cause unexpectedly high output current.
    Typical-value selection limit The catalog also lists 380 VDC as typical input. Pairing 380 V input with 350 V output gives only a 30 V drop, which does not meet the required 40–80 V window. Do not select this pair as an approved operating point; confirm the intended LED load and operating point with the manufacturer. At 380 V input, the stated drop rule corresponds to 300–340 V output.
    Current ripple 40% maximum at rated output current.
    DC input range 360–420 VDC; typical input 380 VDC. Apply the voltage-drop window and thermal limits together.
    Typical efficiency 94%, measured at 100 mA / 380 VDC per the catalog efficiency note; this test label does not remove the required input-to-output voltage difference.
    Typical DC input current 0.1 A at 380 VDC input.
    Setup time 500 ms at 380 VDC, measured at the first cold start. Repeated ON/OFF switching may increase the setup time.
    Maximum shutdown input current 2 mA with PWM dimming OFF at 380 VDC input.

    PWM control and protection

    PWM / remote ON-OFF frequency 100–1000 Hz. Connect the control signal using the model-specific PWM DIM and return connections.
    Enable / disable levels Power ON: leave the PWM DIM input open, or apply a high level above 1.5 V and up to 5 VDC. Power OFF: apply a level below 0.9 VDC or short the PWM input to its control return.
    PWM output characteristic During PWM operation the output current becomes pulsed. The diagram uses a 5 V high level and 0 V low level, with the typical duty/current characteristic marked ±5% tolerance. This is separate from the ±15% output-current tolerance.
    Switch control The illustrated switch across the PWM control connections gives 100% output when open and DIM OFF when closed. Leave the dimming input open if unused.
    Short-circuit protection Hiccup mode; recovers automatically after the fault is removed.
    Overtemperature protection Typical trip temperature Tj = 150°C at IC1, the main control IC. Output shuts down and recovers automatically after the temperature falls. This junction-temperature trip is not the allowed ambient or case temperature.
    Input undervoltage / reverse polarity The driver shuts down when input is below 359 V. The specification states no damage for reverse polarity; connect the input with the correct polarity in normal use.

    Thermal and environmental limits

    Cooling / ambient temperature Fanless free-air convection. In horizontal mounting, the page 9 ambient-temperature curve shows 100% load from −30 to +40°C and ends at +40°C; do not extend the operating limit beyond that boundary.
    Case temperature The separate page 9 case-temperature curve shows 100% load from −30 to +90°C in horizontal mounting. The specification lists +90°C as the maximum case temperature. Meet both the ambient and case limits.
    Temperature-label clarification The working-temperature table labels −30 to +40°C as Tcase, while the separate plots identify that interval as ambient Ta and show case temperature up to +90°C. Retain the +40°C ambient limit and +90°C case maximum; confirm the table-label discrepancy with the manufacturer for the installation.
    Working humidity 20–90% RH, non-condensing.
    Storage temperature / humidity −40 to +80°C; 10–95% RH.
    Temperature coefficient ±0.03%/°C over 0–50°C.
    Vibration 10–500 Hz, 2G; 10 minutes per cycle, 60 minutes along each of the X, Y and Z axes.
    Altitude derating For this fanless model, reduce the permitted ambient temperature by 3.5°C per 1000 m above 2000 m altitude.

    Dimensions and wiring

    Dimensions 32.1 × 20.5 × 12.5 mm (L × W × H). Mechanical drawing tolerance: ±1 mm.
    Power / LED / control connections Bottom-view pins: 1 −Vout for LED negative; 2 +Vout for LED positive; 3 +Vin; 4 −Vin; 5 PWM DIM+. Other positions are N.C. The pin-style table does not provide a separate pin 6.
    Wire / pin geometry Pin diameter 0.60 mm; projection 3.81 mm. The drawing states a pin tolerance of ±0.5 mm. Use the numbered bottom-view drawing and its spacing dimensions for the mating board.
    Return wiring Do not connect −Vin to −Vout. For the PWM return, the drawing recommends a separate wire taken from −Vin; use that control return with PWM DIM+ and follow the pin-style drawing.
    Soldering limits Wave soldering: 265°C for 5 seconds maximum. Manual soldering: 390°C for 3 seconds maximum.

    Application and related equipment

    Lighting applications Panel, indoor LED, recessed, linear, DC-house and industrial lighting, within the driver’s input, output and thermal limits.
    DC-bus system examples The page 11 examples use an external UHP-1500-380E AC/DC supply for the DC bus and a DAP-04 for PWM control from the DALI bus. One arrangement shows a DLP-04L DALI-bus power supply and DALI dimmer; another shows a DLC-02 DALI-2 controller with the DALI dimmer. These are separate system components shown in application examples, not included accessories or a built-in DALI interface on the NHDD driver. Confirm each component and connection for the final system.
    Driver-on-board option The catalog offers a manufacturer-supported driver-on-board (DOB) solution including circuit information and key components such as a driver IC or choke. Contact MEAN WELL for details; no complete order code for those components is specified in this catalog.
    Luminaire integration The application note states that MEAN WELL PBM partners can support DC 380 V LED luminaires. Confirm the specific luminaire and system arrangement with the manufacturer.

    Installation guidance

    Installation reference scope The catalogue links the general LED installation manual, whose family list does not explicitly name NHDD. Use this model's DC input, output and control diagrams; the reference does not establish AC wiring or circuit-breaker ratings for this module.
    Input, output and dimming return Do not connect -Vin to -Vout. Follow the NHDD pin or lead-wire drawing. The catalogue recommends using a separate PWM DIM- connection from the -Vin wiring; the wire version provides a separate black DIM- lead.
    Input-to-LED voltage difference The catalogue lists 350 V output and 35 W as typical values, but also requires the input voltage to exceed the total LED forward voltage by at least 40 V and no more than 80 V to prevent unexpectedly high output current. Do not assume that 380 V input with 350 V output meets this joint condition; confirm the intended input and LED string with MEAN WELL.
    PWM and on-off boundary Use the PWM DIM+ and DIM- control diagram at 100-1000 Hz. ON is above 1.5 V up to 5 V or with the input open; OFF is below 0.9 V or shorted. The switch diagram gives open = 100% ON and closed = OFF.
    System control scope The DALI and DALI-2 devices in the application diagram are external system components. The NHDD module itself exposes PWM/remote on-off control; the diagram does not establish a built-in DALI interface for this module.
    System EMC verification This module is a component of the final system. Verify EMC with the complete device and use a model-appropriate additional EMI filter if required.

    Safety and reference data

    Safety standards LVD BS EN/EN 61347 and EAC TP TC 004 approved, as listed in the catalog.
    EMC emission / immunity Emission: BS EN/EN 55015 and EAC TP TC 020. Immunity: BS EN/EN 61000-4-2, -3, -4, -6 and -8, light-industry level, criteria A; EAC TP TC 020.
    Complete-equipment EMC This driver is a component of the final system. Test EMI with the complete device. If additional filtering is needed, use the applicable EMC test report and the manufacturer’s EMI guidance to determine the filter circuit.
    MTBF 15362.0 thousand hours minimum, Telcordia SR-332 (Bellcore); 2779.1 thousand hours minimum, MIL-HDBK-217F at 25°C.
    Unit mass / warranty 15.6 g for this pin-mounted form, explicitly listed in the WEIGHT field; this is a catalog unit reference. The catalog states a 5-year manufacturer warranty, subject to the manufacturer’s terms.
    Measurement conditions Unless otherwise specified: 380 VDC input, rated current and 25°C ambient. Typical values retain their stated test conditions and must be used together with the operating limits.
    Download MEAN WELL LED Installation Manual (Catalog Reference)

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