MEAN WELL SKM30-N series: Isolated single-output DC-DC converter - SKM30G-15NST

Description

SKM30G-15NST — Isolated single-output DC-DC converter

MEAN WELL SKM30G-15NST is an isolated, regulated single-output DC-DC converter accepting 18–75 V DC. It provides 15 V DC with 2000 mA. The ST configuration uses screw terminals. Remote ON/OFF is provided and no minimum load is required.

Download MEAN WELL SKM30-N Datasheet (PDF)

Series section: PDF pages 43–51.

Model and output specifications

Output voltage 15 V DC.
Rated output current 2000 mA.
Series power and load limit 30 W. Observe the current and total output-power limits together.
Minimum load No minimum load is required.
Voltage accuracy ±2.0% maximum
Line regulation ±0.2%; low-to-high input at rated load.
Load regulation ±0.5%, measured over 0–100% load.
Ripple and noise 150 mVp-p maximum. Measured at 20 MHz bandwidth with a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
Switching frequency 380 kHz typical.
Maximum capacitive load 220 µF.

Input, control and protection

Input voltage 18–75 V DC; 4:1 range. Nominal inputs 24 and 48 V.
Input current 25 mA at no load; 1420 mA at full load, at 24 V input.
Typical efficiency 88.5% at the reference conditions.
Input filter and fuse Pi filter. The manufacturer recommends a 4 A slow-blow external fuse; select it for the actual input and installation.
Overload protection 110–230%; automatic recovery after the fault is removed.
Short-circuit protection Continuous protection with automatic recovery.
Input overvoltage protection Input shutdown at 86 V DC typical.
Output overvoltage protection Clamped by TVS.
Remote ON/OFF Referenced to −Vin: >2.5–5 V or open circuit turns the output ON; <1 V or a short circuit turns it OFF.
Output adjustment Typical ±10% using the single-output trim circuit; trim to −Vout raises the voltage and trim to +Vout lowers it. Keep within the output ratings.
Trim reference values Vref 2.5 V; R1 7.5 kΩ; R2 1.5 kΩ; R3 11 kΩ. Use the manufacturer’s formulas.
Configuration ST denotes the screw-terminal type.
Other output options A 24 V single-output option is mentioned in the catalog; obtain its complete order code and specifications from the manufacturer.

Operating conditions and isolation

Operating temperature and cooling −40 to +90°C; free-air convection. Apply the load-derating limits.
Load derating Full load through 60°C; 50% at 80°C; 25% at 90°C.
Maximum case temperature 110°C.
Working humidity 5–95% RH, non-condensing.
Storage conditions −55 to +125°C; 10–95% RH, non-condensing.
Temperature coefficient ±0.05%/°C.
Vibration 10–500 Hz, 2G; 10 minutes per cycle for 60 minutes along each of the X, Y and Z axes.
Reference test conditions 24 V DC input, rated load, 25°C and 70% RH, unless otherwise stated.
Input-to-output withstand voltage 3 kV DC.
Isolation resistance 100 MΩ.
Isolation capacitance 1000 pF typical.

Mechanical design and installation

Dimensions 76 × 31.5 × 21.2 mm (L × W × H).
Case construction Metal case with shielding on all six sides.
Pin assignment 1 +Vin; 2 −Vin; 3 Remote ON/OFF; 4 +Vout; 5 −Vout; 6 Trim. Check the top-view terminal orientation before wiring.
Mechanical drawing details Screw terminals, power LED and two Ø3.3 mm mounting holes. The drawing shows diagonal mounting centers 61.6 × 23 mm. Use the exact terminal-view orientation.
Unit weight reference 50 g, explicitly stated as a catalog packing reference per unit.
Soldering 3–5 seconds at 265°C maximum, measured 1.5 mm from the case.

EMC and manufacturer references

Safety and catalog references EAC TP TC 020/2011 approved.
EMC emission BS EN/EN 55032 radiated Class A without additional components. Conducted emission is listed as N/A in the specification; Class B uses the external reference circuit.
EMC immunity BS EN/EN 61000-4-2: 4 kV contact, Level 2; -4-3: 3 V/m, Level 2; -4-4: 0.5 kV, Level 1; -4-5: 0.5 kV line-to-line, Level 2; -4-6: 3 V emf, Level 2.
MTBF reference >250 khrs to MIL-HDBK-217F at 25°C; a reliability reference, not a service-life guarantee.
Manufacturer warranty reference The catalog states a 3-year manufacturer warranty.
Class B EMC example F1: 4 A slow-blow fuse; C1: 47 µF/100 V; C2: 2.2 µF/100 V, MLCC 1210; C3/C4: 1000 pF/5 kV MLCC; L1: 325 µH common-mode choke. Use the complete circuit and verify the final equipment.

MEAN WELL SKM30-N series: Isolated single-output DC-DC converter - SKM30G-15NST

Product form

SKM30G-15NST — Isolated single-output DC-DC converter MEAN WELL SKM30G-15NST is an isolated, regulated single-output DC-DC converter accepting 18–75 V DC.... Read more

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    Description

    SKM30G-15NST — Isolated single-output DC-DC converter

    MEAN WELL SKM30G-15NST is an isolated, regulated single-output DC-DC converter accepting 18–75 V DC. It provides 15 V DC with 2000 mA. The ST configuration uses screw terminals. Remote ON/OFF is provided and no minimum load is required.

    Download MEAN WELL SKM30-N Datasheet (PDF)

    Series section: PDF pages 43–51.

    Model and output specifications

    Output voltage 15 V DC.
    Rated output current 2000 mA.
    Series power and load limit 30 W. Observe the current and total output-power limits together.
    Minimum load No minimum load is required.
    Voltage accuracy ±2.0% maximum
    Line regulation ±0.2%; low-to-high input at rated load.
    Load regulation ±0.5%, measured over 0–100% load.
    Ripple and noise 150 mVp-p maximum. Measured at 20 MHz bandwidth with a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
    Switching frequency 380 kHz typical.
    Maximum capacitive load 220 µF.

    Input, control and protection

    Input voltage 18–75 V DC; 4:1 range. Nominal inputs 24 and 48 V.
    Input current 25 mA at no load; 1420 mA at full load, at 24 V input.
    Typical efficiency 88.5% at the reference conditions.
    Input filter and fuse Pi filter. The manufacturer recommends a 4 A slow-blow external fuse; select it for the actual input and installation.
    Overload protection 110–230%; automatic recovery after the fault is removed.
    Short-circuit protection Continuous protection with automatic recovery.
    Input overvoltage protection Input shutdown at 86 V DC typical.
    Output overvoltage protection Clamped by TVS.
    Remote ON/OFF Referenced to −Vin: >2.5–5 V or open circuit turns the output ON; <1 V or a short circuit turns it OFF.
    Output adjustment Typical ±10% using the single-output trim circuit; trim to −Vout raises the voltage and trim to +Vout lowers it. Keep within the output ratings.
    Trim reference values Vref 2.5 V; R1 7.5 kΩ; R2 1.5 kΩ; R3 11 kΩ. Use the manufacturer’s formulas.
    Configuration ST denotes the screw-terminal type.
    Other output options A 24 V single-output option is mentioned in the catalog; obtain its complete order code and specifications from the manufacturer.

    Operating conditions and isolation

    Operating temperature and cooling −40 to +90°C; free-air convection. Apply the load-derating limits.
    Load derating Full load through 60°C; 50% at 80°C; 25% at 90°C.
    Maximum case temperature 110°C.
    Working humidity 5–95% RH, non-condensing.
    Storage conditions −55 to +125°C; 10–95% RH, non-condensing.
    Temperature coefficient ±0.05%/°C.
    Vibration 10–500 Hz, 2G; 10 minutes per cycle for 60 minutes along each of the X, Y and Z axes.
    Reference test conditions 24 V DC input, rated load, 25°C and 70% RH, unless otherwise stated.
    Input-to-output withstand voltage 3 kV DC.
    Isolation resistance 100 MΩ.
    Isolation capacitance 1000 pF typical.

    Mechanical design and installation

    Dimensions 76 × 31.5 × 21.2 mm (L × W × H).
    Case construction Metal case with shielding on all six sides.
    Pin assignment 1 +Vin; 2 −Vin; 3 Remote ON/OFF; 4 +Vout; 5 −Vout; 6 Trim. Check the top-view terminal orientation before wiring.
    Mechanical drawing details Screw terminals, power LED and two Ø3.3 mm mounting holes. The drawing shows diagonal mounting centers 61.6 × 23 mm. Use the exact terminal-view orientation.
    Unit weight reference 50 g, explicitly stated as a catalog packing reference per unit.
    Soldering 3–5 seconds at 265°C maximum, measured 1.5 mm from the case.

    EMC and manufacturer references

    Safety and catalog references EAC TP TC 020/2011 approved.
    EMC emission BS EN/EN 55032 radiated Class A without additional components. Conducted emission is listed as N/A in the specification; Class B uses the external reference circuit.
    EMC immunity BS EN/EN 61000-4-2: 4 kV contact, Level 2; -4-3: 3 V/m, Level 2; -4-4: 0.5 kV, Level 1; -4-5: 0.5 kV line-to-line, Level 2; -4-6: 3 V emf, Level 2.
    MTBF reference >250 khrs to MIL-HDBK-217F at 25°C; a reliability reference, not a service-life guarantee.
    Manufacturer warranty reference The catalog states a 3-year manufacturer warranty.
    Class B EMC example F1: 4 A slow-blow fuse; C1: 47 µF/100 V; C2: 2.2 µF/100 V, MLCC 1210; C3/C4: 1000 pF/5 kV MLCC; L1: 325 µH common-mode choke. Use the complete circuit and verify the final equipment.

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