MEAN WELL SCW20 series: isolated single-output DC-DC converter - SCW20C-15

Description

MEAN WELL SCW20C-15 — DC-DC converter

MEAN WELL SCW20C-15 is an isolated, regulated single-output DC-DC converter with 15 V DC output and a 36–75 V DC input range. It uses a compact DIP24 package for integration into electronic equipment.

Download MEAN WELL SCW20 Datasheet (PDF)

Electrical specifications

Parameter Specification
Model SCW20C-15
Output configuration Single regulated DC output.
Output voltage 15 V DC
Output current Up to 1333 mA. No minimum load is required.
Catalog power rating 20 W series rating. The selected model is limited by its listed output voltage and current; do not increase current to reach the series wattage.
Input voltage 36–75 V DC (2:1 range); nominal 48 V DC.
Input current No load: 15 mA; full load: 479 mA at the catalog test conditions.
Efficiency (typical) 89% at the specified nominal-input and rated-load conditions.
Capacitive load (maximum) 220 µF.
Voltage accuracy ±2%
Ripple and noise 80 mVp-p. Measured with 20 MHz bandwidth and a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors.
Line regulation ±0.5% from low to high input at rated load.
Load regulation ±0.5% (20–100% rated load).
Switching frequency 400 kHz minimum
Input filter Pi-type input filter.
Specification conditions Nominal input 48 V DC, rated load, 25°C ambient and 70% RH unless otherwise specified.
Series efficiency reference The catalog family reaches up to 89%; use the model-specific typical efficiency above for this selection.

Protection and control

Parameter Specification
Input fuse An external input fuse is recommended: 1 A slow-blow.
Short circuit Continuous protection with automatic recovery.
Overload 120–190% of rated output power; automatic recovery after removal of the fault.
Internal power dissipation 500 mW, as specified in the catalog.
Remote ON/OFF Pin 1 (R.C.), referenced to −Vin: ON above 2.5 V DC or open; OFF below 0.8 V DC or shorted to −Vin.

Mechanical and environmental specifications

Parameter Specification
Dimensions 31.8 × 20.3 × 12.2 mm (L × W × H).
Case and cooling Five-sided shielded metal case. Free-air convection cooling.
Pin assignment Bottom-view numbering: pins 2 and 3 = −Vin; pins 22 and 23 = +Vin; pins 9 and 11 = N.C.; pin 14 = +Vout; pin 16 = −Vout. Pin 1 = R.C. (remote ON/OFF). N.C. means no connection. Follow the drawing orientation when laying out the PCB.
Mechanical installation DIP24 footprint; 2.54 mm grid, 15.24 mm between pin rows and 3.8 mm lead projection. Pin size: 0.8 ±0.05 mm. Use the model-specific bottom-view and top-view PCB drawings. PCB hole diameter: 1 mm (+0.2/−0).
Working environment −40 to +80°C with load derating; 20–90% RH, non-condensing.
Load derating Natural convection: 100% at +50°C; 75% at +60°C, 60% at +70°C and 50% at +80°C, as marked on the catalog curve.
Storage -40 to +105°C; 10–95% RH, non-condensing.
Temperature coefficient 0.03%/°C (0–85°C).
Case temperature +110°C maximum.
Soldering At 1.5 mm from the case: 260°C maximum for 1–3 s.
Vibration 10–500 Hz, 2 G, 10 minutes per cycle; 60 minutes along each X, Y and Z axis.
Catalog packing reference per unit 18.5 g, from the catalog PACKING entry; not a measured net weight.
Manufacturer packing 15 pieces per tube; this is the catalog packing arrangement.

Isolation, EMC and manufacturer information

Parameter Specification
Isolation withstand Input-to-output: 1.5 kV DC.
Isolation resistance Input-to-output: 100 MΩ at 500 V DC, 25°C and 70% RH.
Isolation capacitance 1200 pF typical.
EMC emissions Conducted: not specified (N/A). Radiated: BS EN/EN 55032 (CISPR 32) Class A requires the additional components in the catalog circuit.
EMC immunity BS EN/EN 61000-4-2: Level 2, ±8 kV air / ±4 kV contact; -4-3: Level 2, 3 V/m; -4-4: Level 1, 0.5 kV; -4-5: Level 1, 0.5 kV line-to-line; -4-6: Level 2, 3 V (e.m.f.). -4-8: Level 2, 3 A/m.
Approval EAC TP TC 020/2011 and EAC TP TC 004 approved for this 48 V nominal-input model.
System EMC Reconfirm EMC compliance in the final equipment. The component specification does not replace the complete system assessment.
EMC application circuit Class A circuit: C3 = 1000 pF / 2 kV MLCC; C1, C2, C4 and L1 = N.C. Class B circuit for this input version: C1 and C2 = 2.2 µF / 100 V each; C3 and C4 = 1000 pF / 2 kV MLCC each; L1 = 325 µH common-mode choke. C1/C2 use 1812-size parts where fitted. Follow the catalog connections and verify system EMC.
MTBF 224 k hours per MIL-HDBK-217F at 25°C; not a service-life or warranty guarantee.
Manufacturer warranty reference The catalog states a 3-year manufacturer warranty; the manufacturer’s applicable terms govern.

MEAN WELL SCW20 series: isolated single-output DC-DC converter - SCW20C-15

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MEAN WELL SCW20C-15 — DC-DC converter MEAN WELL SCW20C-15 is an isolated, regulated single-output DC-DC converter with 15 V DC... Read more

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    Description

    MEAN WELL SCW20C-15 — DC-DC converter

    MEAN WELL SCW20C-15 is an isolated, regulated single-output DC-DC converter with 15 V DC output and a 36–75 V DC input range. It uses a compact DIP24 package for integration into electronic equipment.

    Download MEAN WELL SCW20 Datasheet (PDF)

    Electrical specifications

    Parameter Specification
    Model SCW20C-15
    Output configuration Single regulated DC output.
    Output voltage 15 V DC
    Output current Up to 1333 mA. No minimum load is required.
    Catalog power rating 20 W series rating. The selected model is limited by its listed output voltage and current; do not increase current to reach the series wattage.
    Input voltage 36–75 V DC (2:1 range); nominal 48 V DC.
    Input current No load: 15 mA; full load: 479 mA at the catalog test conditions.
    Efficiency (typical) 89% at the specified nominal-input and rated-load conditions.
    Capacitive load (maximum) 220 µF.
    Voltage accuracy ±2%
    Ripple and noise 80 mVp-p. Measured with 20 MHz bandwidth and a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors.
    Line regulation ±0.5% from low to high input at rated load.
    Load regulation ±0.5% (20–100% rated load).
    Switching frequency 400 kHz minimum
    Input filter Pi-type input filter.
    Specification conditions Nominal input 48 V DC, rated load, 25°C ambient and 70% RH unless otherwise specified.
    Series efficiency reference The catalog family reaches up to 89%; use the model-specific typical efficiency above for this selection.

    Protection and control

    Parameter Specification
    Input fuse An external input fuse is recommended: 1 A slow-blow.
    Short circuit Continuous protection with automatic recovery.
    Overload 120–190% of rated output power; automatic recovery after removal of the fault.
    Internal power dissipation 500 mW, as specified in the catalog.
    Remote ON/OFF Pin 1 (R.C.), referenced to −Vin: ON above 2.5 V DC or open; OFF below 0.8 V DC or shorted to −Vin.

    Mechanical and environmental specifications

    Parameter Specification
    Dimensions 31.8 × 20.3 × 12.2 mm (L × W × H).
    Case and cooling Five-sided shielded metal case. Free-air convection cooling.
    Pin assignment Bottom-view numbering: pins 2 and 3 = −Vin; pins 22 and 23 = +Vin; pins 9 and 11 = N.C.; pin 14 = +Vout; pin 16 = −Vout. Pin 1 = R.C. (remote ON/OFF). N.C. means no connection. Follow the drawing orientation when laying out the PCB.
    Mechanical installation DIP24 footprint; 2.54 mm grid, 15.24 mm between pin rows and 3.8 mm lead projection. Pin size: 0.8 ±0.05 mm. Use the model-specific bottom-view and top-view PCB drawings. PCB hole diameter: 1 mm (+0.2/−0).
    Working environment −40 to +80°C with load derating; 20–90% RH, non-condensing.
    Load derating Natural convection: 100% at +50°C; 75% at +60°C, 60% at +70°C and 50% at +80°C, as marked on the catalog curve.
    Storage -40 to +105°C; 10–95% RH, non-condensing.
    Temperature coefficient 0.03%/°C (0–85°C).
    Case temperature +110°C maximum.
    Soldering At 1.5 mm from the case: 260°C maximum for 1–3 s.
    Vibration 10–500 Hz, 2 G, 10 minutes per cycle; 60 minutes along each X, Y and Z axis.
    Catalog packing reference per unit 18.5 g, from the catalog PACKING entry; not a measured net weight.
    Manufacturer packing 15 pieces per tube; this is the catalog packing arrangement.

    Isolation, EMC and manufacturer information

    Parameter Specification
    Isolation withstand Input-to-output: 1.5 kV DC.
    Isolation resistance Input-to-output: 100 MΩ at 500 V DC, 25°C and 70% RH.
    Isolation capacitance 1200 pF typical.
    EMC emissions Conducted: not specified (N/A). Radiated: BS EN/EN 55032 (CISPR 32) Class A requires the additional components in the catalog circuit.
    EMC immunity BS EN/EN 61000-4-2: Level 2, ±8 kV air / ±4 kV contact; -4-3: Level 2, 3 V/m; -4-4: Level 1, 0.5 kV; -4-5: Level 1, 0.5 kV line-to-line; -4-6: Level 2, 3 V (e.m.f.). -4-8: Level 2, 3 A/m.
    Approval EAC TP TC 020/2011 and EAC TP TC 004 approved for this 48 V nominal-input model.
    System EMC Reconfirm EMC compliance in the final equipment. The component specification does not replace the complete system assessment.
    EMC application circuit Class A circuit: C3 = 1000 pF / 2 kV MLCC; C1, C2, C4 and L1 = N.C. Class B circuit for this input version: C1 and C2 = 2.2 µF / 100 V each; C3 and C4 = 1000 pF / 2 kV MLCC each; L1 = 325 µH common-mode choke. C1/C2 use 1812-size parts where fitted. Follow the catalog connections and verify system EMC.
    MTBF 224 k hours per MIL-HDBK-217F at 25°C; not a service-life or warranty guarantee.
    Manufacturer warranty reference The catalog states a 3-year manufacturer warranty; the manufacturer’s applicable terms govern.

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