MEAN WELL DKA15W8 series: Isolated dual-output DC-DC converter - DKA15W8-12

Description

DKA15W8-12 — Isolated dual-output DC-DC converter

MEAN WELL DKA15W8-12 is an isolated, regulated dual-output DC-DC converter accepting 9–75 V DC. It provides ±12 V DC relative to COM with 625 mA per rail. It uses an 8:1 input range and a shielded 2 × 1 inch package; no minimum load is required.

Download MEAN WELL DKA15W8 Datasheet (PDF)

Series section: PDF pages 58–63.

Model and output specifications

Output voltage ±12 V DC relative to COM.
Rated output current 625 mA per output rail.
Series power and load limit 15 W series. The stated current limit also applies; do not infer a higher output current from the series wattage.
Minimum load No minimum load is required.
Voltage accuracy ±2.0%
Line regulation ±0.5%; 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 300 kHz PWM typical.
Maximum capacitive load 150 µF for each output.
Cross regulation ±5.0% with one output varied over 25–100% load.

Input, control and protection

Input voltage 9–75 V DC; 8:1 range. Nominal inputs listed are 12, 24, 36, 48 and 72 V; specification test input is 24 V.
Input current 15 mA at no load; 727 mA at full load.
Typical efficiency 86% at the reference conditions.
Input filter and fuse Pi filter. The manufacturer recommends a 5 A slow-blow external fuse; select protection for the actual input current and installation.
Input surge withstand 100 V DC for 100 ms maximum.
Undervoltage lockout Typical values: start-up 8.8 V; shutdown 8 V.
Overload protection 110–230%; automatic recovery after removal of the fault.
Short-circuit protection Continuous protection with automatic recovery.
Output overvoltage protection Clamped by TVS.
Remote ON/OFF By request; confirm that the supplied configuration includes this function. Referenced to −Vin: >2.5–30 V or open circuit turns the output ON; <1 V or a short circuit turns it OFF.

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 80°C; 50% load 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 ±0.03%/°C over 0–80°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 1000 MΩ.
Isolation capacitance 1000 pF typical.

Mechanical design and installation

Dimensions 50.8 × 25.4 × 11.2 mm (L × W × H).
Case construction Metal case with shielding on all six sides.
Pin assignment 1 +Vin; 2 −Vin; 3 Remote ON/OFF (by request); 4 −Vout; 5 COM; 6 +Vout. Check the bottom-view orientation before PCB assembly.
Mechanical drawing details Pin diameter 1 ±0.1 mm; lead length 5.8 mm. Recommended PCB hole Ø1.2 mm (+0.2/−0 mm). Drawing tolerances: x.x ±0.5 mm; x.xx ±0.25 mm.
Unit weight reference 29 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; Class B with external components. Conducted emission is listed as N/A in the specification.
EMC immunity 8 kV air, Level 3; 4 kV contact, Level 2 under BS EN/EN 61000-4-2; -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; -4-8: 1 A/m, Level 1.
MTBF reference >860 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 reference circuit F1: 5 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. Follow the complete reference circuit and verify the final equipment.

MEAN WELL DKA15W8 series: Isolated dual-output DC-DC converter - DKA15W8-12

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DKA15W8-12 — Isolated dual-output DC-DC converter MEAN WELL DKA15W8-12 is an isolated, regulated dual-output DC-DC converter accepting 9–75 V DC.... Read more

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    Description

    DKA15W8-12 — Isolated dual-output DC-DC converter

    MEAN WELL DKA15W8-12 is an isolated, regulated dual-output DC-DC converter accepting 9–75 V DC. It provides ±12 V DC relative to COM with 625 mA per rail. It uses an 8:1 input range and a shielded 2 × 1 inch package; no minimum load is required.

    Download MEAN WELL DKA15W8 Datasheet (PDF)

    Series section: PDF pages 58–63.

    Model and output specifications

    Output voltage ±12 V DC relative to COM.
    Rated output current 625 mA per output rail.
    Series power and load limit 15 W series. The stated current limit also applies; do not infer a higher output current from the series wattage.
    Minimum load No minimum load is required.
    Voltage accuracy ±2.0%
    Line regulation ±0.5%; 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 300 kHz PWM typical.
    Maximum capacitive load 150 µF for each output.
    Cross regulation ±5.0% with one output varied over 25–100% load.

    Input, control and protection

    Input voltage 9–75 V DC; 8:1 range. Nominal inputs listed are 12, 24, 36, 48 and 72 V; specification test input is 24 V.
    Input current 15 mA at no load; 727 mA at full load.
    Typical efficiency 86% at the reference conditions.
    Input filter and fuse Pi filter. The manufacturer recommends a 5 A slow-blow external fuse; select protection for the actual input current and installation.
    Input surge withstand 100 V DC for 100 ms maximum.
    Undervoltage lockout Typical values: start-up 8.8 V; shutdown 8 V.
    Overload protection 110–230%; automatic recovery after removal of the fault.
    Short-circuit protection Continuous protection with automatic recovery.
    Output overvoltage protection Clamped by TVS.
    Remote ON/OFF By request; confirm that the supplied configuration includes this function. Referenced to −Vin: >2.5–30 V or open circuit turns the output ON; <1 V or a short circuit turns it OFF.

    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 80°C; 50% load 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 ±0.03%/°C over 0–80°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 1000 MΩ.
    Isolation capacitance 1000 pF typical.

    Mechanical design and installation

    Dimensions 50.8 × 25.4 × 11.2 mm (L × W × H).
    Case construction Metal case with shielding on all six sides.
    Pin assignment 1 +Vin; 2 −Vin; 3 Remote ON/OFF (by request); 4 −Vout; 5 COM; 6 +Vout. Check the bottom-view orientation before PCB assembly.
    Mechanical drawing details Pin diameter 1 ±0.1 mm; lead length 5.8 mm. Recommended PCB hole Ø1.2 mm (+0.2/−0 mm). Drawing tolerances: x.x ±0.5 mm; x.xx ±0.25 mm.
    Unit weight reference 29 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; Class B with external components. Conducted emission is listed as N/A in the specification.
    EMC immunity 8 kV air, Level 3; 4 kV contact, Level 2 under BS EN/EN 61000-4-2; -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; -4-8: 1 A/m, Level 1.
    MTBF reference >860 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 reference circuit F1: 5 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. Follow the complete reference circuit and verify the final equipment.

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