MEAN WELL MDD02-N series: Dual-output unregulated medical DC/DC converter - MDD02N-05N

Description

MDD02N-05N — Dual-output unregulated medical DC/DC converter

MEAN WELL MDD02N-05N is a 2 W isolated dual-output unregulated medical DC/DC converter with a 21.6–26.4 V DC input range and ±5 V DC output. Its SIP 7 package, low patient leakage and reinforced isolation suit component-level integration in medical and industrial equipment. Observe the specified minimum output load and temperature derating.

Download MEAN WELL MDD02-N Datasheet (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

MDD02-N section: PDF pages 6–10, edition 2024-08-12. Refer to the model-selection table, pin layout and applicable derating curve for this complete model.

Model and electrical selection

Model and package MDD02N-05N; 2 W isolated unregulated converter in a SIP 7 package. S denotes single output, D denotes dual output; the final N identifies the catalog N series.
DC input range 21.6–26.4 V DC; nominal 24 V DC (±10% input range).
Input current 11 mA at no load; 102 mA at full load.
Output voltage ±5 V DC; positive and negative rails relative to Common.
Output current range 20–200 mA per output rail. Maintain the specified minimum load on each rail.
Rated output power 2 W total rated output. Observe this power limit together with the stated voltage and current limits.
Efficiency 83% typical.
Capacitive load 680 µF maximum for each output.
Input filter and fuse Internal capacitor input filter; a 500 mA slow-blow input fuse is recommended.
Voltage accuracy and regulation Voltage accuracy: ±5.0%. Line regulation: 1.2% for a 1% input variation, measured from low line to high line at rated load.
Load regulation The specification lists ±15% for 3.3 V and 5 V outputs and ±10% for other outputs, measured over 10–100% rated load. Confirm which limit applies to this dual ±5 V model with MEAN WELL.
Ripple and noise 100 mVp-p. Measured with a 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
Switching frequency 20 kHz typical.

Protection and medical isolation

Short-circuit protection Continuous short-circuit protection with automatic recovery.
Isolation and patient leakage Reinforced primary-to-secondary isolation: 1 × MOPP / 2 × MOOP at a system input of 250 V AC. Patient leakage is specified as 2 µA maximum at 250 V AC, 50/60 Hz; the feature summary describes low leakage below 2 µA.
Withstand voltage Input to output: 6 kV DC.
Isolation resistance 100 MΩ, tested at 500 V DC, 25°C and 70% RH.
Isolation capacitance 25 pF typical.
Safety approvals IEC62368-1 / UL62368-1, LVD IEC60601-1 and EAC TP TC 020/2011 approved as stated in the module datasheet. Compliance of the complete medical equipment remains a system-level requirement.

EMC and circuit integration

EMC emissions Conducted and radiated emissions: BS EN/EN55032 and BS EN/EN55011, Class A/B with the specified external components. Reconfirm EMC compliance in the final equipment.
EMC suggestion circuit The catalog's typical recommended Class A/B circuit uses an LDM series inductor of 100 µH and input capacitor C1 of 22 µF. A 470 pF / 6 kV DC capacitor connects the module-side +Vin node to output Common. Follow the exact 24 V input circuit on PDF page 9; the C1 voltage rating is not specified and must be selected for the application.
EMC immunity — ESD and RF BS EN/EN61000-4-2: Level 2, ±4 kV contact and Level 3, ±8 kV air. BS EN/EN61000-4-3: Level 2, 3 V/m. BS EN/EN61000-4-6: Level 2, 3 V (e.m.f.).
EMC immunity — transients and magnetic field BS EN/EN61000-4-4: Level 1, 0.5 kV / 5 kHz. BS EN/EN61000-4-5: Level 1, 0.5 kV line to ground. BS EN/EN61000-4-8: Level 1, 1 A/m.

Thermal, environmental and assembly limits

Operating temperature and derating −40 to +95°C with free-air convection. The natural-convection curve permits 100% load through +90°C, falling to 50% at +95°C; do not treat the entire temperature range as full-load operation.
Case and ambient humidity Specified case temperature: +105°C. Working humidity: 20–90% RH, non-condensing.
Storage −55 to +125°C; 10–95% RH, non-condensing.
Temperature coefficient 0.02%/°C over 0–90°C.
Soldering At 1.5 mm from the case: 1–3 seconds, 260°C maximum.
Vibration 10–500 Hz, 2 G; 10 minutes per cycle, for 60 minutes along each X, Y and Z axis.

Mechanical layout and pin assignment

Dimensions and case 19.7 × 7.1 × 11.5 mm (L × W × H); non-conductive black plastic case rated UL94V-0.
Mechanical tolerances General tolerance: x.x ±0.5 mm; x.xx ±0.10 mm. Pin pitch tolerance: ±0.05 mm. Pin cross-section: 0.75 × 0.25 mm; lead extension: 4.1 mm. The front-view drawing separately shows a 0.5 mm body stand-off.
PCB footprint Top-view layout: minimum reserved space 20.15 × 7.55 mm; hole diameter 1.1 mm. Pin grid 2.54 mm, span from pin 1 to pin 7 15.24 mm. The body drawing shows pin-1 offsets of 2 ±0.5 mm and 1.3 mm; use PDF page 9 for orientation.
Pin assignment Pin 1: +Vin; pin 2: −Vin; pin 5: −Vout; pin 6: Common; pin 7: +Vout. Check the bottom-view module drawing against the top-view PCB layout before connecting.

Test conditions, packing and applications

Specification test conditions Unless otherwise stated: nominal 24 V DC input, rated load, 25°C and 70% RH ambient.
MTBF 12900 kh, MIL-HDBK-217F at 25°C.
Unit weight 2.8 g catalog packing reference per unit; not a separately measured net weight.
Bulk packing 24 units per tube, 2,160 units in 90 tubes per carton. One tube gross weight: 105.5 g; carton gross weight: 9.5 kg. Carton: 545 × 145 × 220 mm. Packing-illustration tube cross-section: 22.1 × 10.2 mm.
Typical applications Medical devices, oxygen monitors, CT scanning, medical carts, oral-care equipment and industrial control systems. The catalog also lists telecommunications/datacom and wireless networks.
Manufacturer warranty The manufacturer datasheet states a 3-year warranty; confirm the applicable supply and service terms.

Component and system EMC guidance

Complete-system EMC verification Verify EMC with the converter installed in the final equipment and connected to a representative load. Wiring, assembly and the application affect the result. Follow the model's specified EMC conditions and any required external components; the linked EMI testing guidance does not certify the finished equipment.

MEAN WELL MDD02-N series: Dual-output unregulated medical DC/DC converter - MDD02N-05N

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MDD02N-05N — Dual-output unregulated medical DC/DC converter MEAN WELL MDD02N-05N is a 2 W isolated dual-output unregulated medical DC/DC converter... Read more

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    Description

    MDD02N-05N — Dual-output unregulated medical DC/DC converter

    MEAN WELL MDD02N-05N is a 2 W isolated dual-output unregulated medical DC/DC converter with a 21.6–26.4 V DC input range and ±5 V DC output. Its SIP 7 package, low patient leakage and reinforced isolation suit component-level integration in medical and industrial equipment. Observe the specified minimum output load and temperature derating.

    Download MEAN WELL MDD02-N Datasheet (PDF)
    Download MEAN WELL EMI Testing Guidance (PDF)

    MDD02-N section: PDF pages 6–10, edition 2024-08-12. Refer to the model-selection table, pin layout and applicable derating curve for this complete model.

    Model and electrical selection

    Model and package MDD02N-05N; 2 W isolated unregulated converter in a SIP 7 package. S denotes single output, D denotes dual output; the final N identifies the catalog N series.
    DC input range 21.6–26.4 V DC; nominal 24 V DC (±10% input range).
    Input current 11 mA at no load; 102 mA at full load.
    Output voltage ±5 V DC; positive and negative rails relative to Common.
    Output current range 20–200 mA per output rail. Maintain the specified minimum load on each rail.
    Rated output power 2 W total rated output. Observe this power limit together with the stated voltage and current limits.
    Efficiency 83% typical.
    Capacitive load 680 µF maximum for each output.
    Input filter and fuse Internal capacitor input filter; a 500 mA slow-blow input fuse is recommended.
    Voltage accuracy and regulation Voltage accuracy: ±5.0%. Line regulation: 1.2% for a 1% input variation, measured from low line to high line at rated load.
    Load regulation The specification lists ±15% for 3.3 V and 5 V outputs and ±10% for other outputs, measured over 10–100% rated load. Confirm which limit applies to this dual ±5 V model with MEAN WELL.
    Ripple and noise 100 mVp-p. Measured with a 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
    Switching frequency 20 kHz typical.

    Protection and medical isolation

    Short-circuit protection Continuous short-circuit protection with automatic recovery.
    Isolation and patient leakage Reinforced primary-to-secondary isolation: 1 × MOPP / 2 × MOOP at a system input of 250 V AC. Patient leakage is specified as 2 µA maximum at 250 V AC, 50/60 Hz; the feature summary describes low leakage below 2 µA.
    Withstand voltage Input to output: 6 kV DC.
    Isolation resistance 100 MΩ, tested at 500 V DC, 25°C and 70% RH.
    Isolation capacitance 25 pF typical.
    Safety approvals IEC62368-1 / UL62368-1, LVD IEC60601-1 and EAC TP TC 020/2011 approved as stated in the module datasheet. Compliance of the complete medical equipment remains a system-level requirement.

    EMC and circuit integration

    EMC emissions Conducted and radiated emissions: BS EN/EN55032 and BS EN/EN55011, Class A/B with the specified external components. Reconfirm EMC compliance in the final equipment.
    EMC suggestion circuit The catalog's typical recommended Class A/B circuit uses an LDM series inductor of 100 µH and input capacitor C1 of 22 µF. A 470 pF / 6 kV DC capacitor connects the module-side +Vin node to output Common. Follow the exact 24 V input circuit on PDF page 9; the C1 voltage rating is not specified and must be selected for the application.
    EMC immunity — ESD and RF BS EN/EN61000-4-2: Level 2, ±4 kV contact and Level 3, ±8 kV air. BS EN/EN61000-4-3: Level 2, 3 V/m. BS EN/EN61000-4-6: Level 2, 3 V (e.m.f.).
    EMC immunity — transients and magnetic field BS EN/EN61000-4-4: Level 1, 0.5 kV / 5 kHz. BS EN/EN61000-4-5: Level 1, 0.5 kV line to ground. BS EN/EN61000-4-8: Level 1, 1 A/m.

    Thermal, environmental and assembly limits

    Operating temperature and derating −40 to +95°C with free-air convection. The natural-convection curve permits 100% load through +90°C, falling to 50% at +95°C; do not treat the entire temperature range as full-load operation.
    Case and ambient humidity Specified case temperature: +105°C. Working humidity: 20–90% RH, non-condensing.
    Storage −55 to +125°C; 10–95% RH, non-condensing.
    Temperature coefficient 0.02%/°C over 0–90°C.
    Soldering At 1.5 mm from the case: 1–3 seconds, 260°C maximum.
    Vibration 10–500 Hz, 2 G; 10 minutes per cycle, for 60 minutes along each X, Y and Z axis.

    Mechanical layout and pin assignment

    Dimensions and case 19.7 × 7.1 × 11.5 mm (L × W × H); non-conductive black plastic case rated UL94V-0.
    Mechanical tolerances General tolerance: x.x ±0.5 mm; x.xx ±0.10 mm. Pin pitch tolerance: ±0.05 mm. Pin cross-section: 0.75 × 0.25 mm; lead extension: 4.1 mm. The front-view drawing separately shows a 0.5 mm body stand-off.
    PCB footprint Top-view layout: minimum reserved space 20.15 × 7.55 mm; hole diameter 1.1 mm. Pin grid 2.54 mm, span from pin 1 to pin 7 15.24 mm. The body drawing shows pin-1 offsets of 2 ±0.5 mm and 1.3 mm; use PDF page 9 for orientation.
    Pin assignment Pin 1: +Vin; pin 2: −Vin; pin 5: −Vout; pin 6: Common; pin 7: +Vout. Check the bottom-view module drawing against the top-view PCB layout before connecting.

    Test conditions, packing and applications

    Specification test conditions Unless otherwise stated: nominal 24 V DC input, rated load, 25°C and 70% RH ambient.
    MTBF 12900 kh, MIL-HDBK-217F at 25°C.
    Unit weight 2.8 g catalog packing reference per unit; not a separately measured net weight.
    Bulk packing 24 units per tube, 2,160 units in 90 tubes per carton. One tube gross weight: 105.5 g; carton gross weight: 9.5 kg. Carton: 545 × 145 × 220 mm. Packing-illustration tube cross-section: 22.1 × 10.2 mm.
    Typical applications Medical devices, oxygen monitors, CT scanning, medical carts, oral-care equipment and industrial control systems. The catalog also lists telecommunications/datacom and wireless networks.
    Manufacturer warranty The manufacturer datasheet states a 3-year warranty; confirm the applicable supply and service terms.

    Component and system EMC guidance

    Complete-system EMC verification Verify EMC with the converter installed in the final equipment and connected to a representative load. Wiring, assembly and the application affect the result. Follow the model's specified EMC conditions and any required external components; the linked EMI testing guidance does not certify the finished equipment.

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