MEAN WELL DKA30 series: Isolated dual-output DC-DC converter - DKA30A-12

Description

DKA30A-12 — Isolated dual-output DC-DC converter

MEAN WELL DKA30A-12 is an isolated dual-output DC-DC converter accepting 9–18 V DC. It provides ±12 V DC relative to the Common return, with 30 W total rated output power. The specified current range is 125–1250 mA per output rail; maintain the minimum loads and the combined power limit. Its 2 × 2 inch metal package provides 1.5 kV DC input-to-output isolation. Remote ON/OFF control is provided.

Download MEAN WELL DKA30 Datasheet (PDF)

Series section: PDF pages 12–13.

Model and output specifications

Complete model DKA30A-12
Model selection DKA30 identifies the dual-output series. Input code A selects 9–18 V DC. Output code 12 selects ±12 V DC.
Output voltage ±12 V DC relative to Common. Positive and negative output rails share the Common return.
Output current range 125–1250 mA per output rail. Maintain the stated minimum current on each output.
Rated power and load limit 30 W total across all two output rails. Observe every rail current limit and the combined output-power limit together.
Voltage accuracy ±2.0%.
Line regulation ±0.5%, measured from low to high input voltage at rated load.
Load regulation ±0.5%, measured over 10–100% of rated load.
Ripple and noise 100 mVp-p maximum, measured at 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
Switching frequency 100 kHz minimum.

Input and protection

Input voltage 9–18 V DC; 2:1 input range.
Input current 3.2 A at full load; 40 mA at no load, at the reference test conditions.
Typical efficiency 80% at the reference test conditions.
Input filter and protection Built-in EMI filter with a Pi network. An external input fuse is recommended.
Overload protection 110–250% of rated output power; hiccup mode with automatic recovery after the fault is removed.
Short-circuit protection All outputs are protected; hiccup mode with automatic recovery after the fault is removed.
Fault-duration limit Do not allow operation in overload or short circuit for more than 30 seconds.
Optional configurations The catalog lists a 4:1 input-range option. The stated specifications for this model are 2:1 and 1.5 kV DC; confirm the optional configuration with the manufacturer before selection.

Control and adjustment

Remote ON/OFF control R.C. is referenced to −Vin. The stated power-ON condition is >4.5–5.5 V DC or open circuit; power OFF is below 0.8 V DC or short circuit to −Vin. Follow the specified control conditions.
External output trim ±10% adjustment. Connect a trim resistance between Trim pin 8 and −Vout pin 7 to raise the output, or between Trim pin 8 and +Vout pin 5 to lower it. A 500 kΩ trimpot example is shown in the complete circuit diagram. Observe per-rail current and combined power limits when adjusting.

Operating conditions and isolation

Operating temperature and cooling −40 to +85°C, with free-air convection and the specified load derating.
Load derating Full load through 71°C; reduce to 80% load at 85°C. Apply the curve only within the specified operating range.
Working humidity 20–90% RH, non-condensing.
Storage conditions −40 to +105°C; 10–95% RH.
Temperature coefficient ±0.03%/°C over 0–50°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 Normal input, rated load, 25°C ambient and 70% RH, unless otherwise stated.
Input-to-output withstand voltage 1.5 kV DC.
Isolation resistance 100 MΩ at 500 V DC, 25°C and 70% RH.

Mechanical design and installation

Dimensions 50.8 × 50.8 × 21 mm (L × W × H).
Case and production testing Metal case with shielding on all six sides and epoxy encapsulation; 100% burn-in test.
Pin assignment 1 R.C.; 2 No Pin; 3 −Vin; 4 +Vin; 5 +Vout; 6 COM; 7 −Vout; 8 Trim. Check the bottom-view orientation before PCB assembly.
Mechanical drawing details Pin diameter: 1.0 mm (+0.2/−0.1 mm); lead length: 5.8 mm. Bottom-view drawing: pin-row separation is 45.72 mm; the four output-side pins span 30.48 mm. Follow the complete drawing for the asymmetric input-side positions.
Unit weight reference 110 g, explicitly stated as a catalog packing reference per unit. Tube and carton gross weights are separate packaging data.

EMC and manufacturer references

Safety standards EAC TP TC 020/2011 approved.
Catalog approvals FCC, EAC, CE and UKCA are listed in the manufacturer’s features.
EMC emission BS EN/EN 55032 Class A; FCC Part 15 Class A; EAC TP TC 020.
EMC immunity BS EN/EN 61000-4-2, -4-3, -4-4, -4-5, -4-6 and -4-8; light-industrial level, criterion A; EAC TP TC 020.
MTBF reference 100 khrs minimum to MIL-HDBK-217F at 25°C; a reliability reference, not a service-life guarantee.
Manufacturer warranty reference The catalog states a 2-year manufacturer warranty.

MEAN WELL DKA30 series: Isolated dual-output DC-DC converter - DKA30A-12

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DKA30A-12 — Isolated dual-output DC-DC converter MEAN WELL DKA30A-12 is an isolated dual-output DC-DC converter accepting 9–18 V DC. It... Read more

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    Description

    DKA30A-12 — Isolated dual-output DC-DC converter

    MEAN WELL DKA30A-12 is an isolated dual-output DC-DC converter accepting 9–18 V DC. It provides ±12 V DC relative to the Common return, with 30 W total rated output power. The specified current range is 125–1250 mA per output rail; maintain the minimum loads and the combined power limit. Its 2 × 2 inch metal package provides 1.5 kV DC input-to-output isolation. Remote ON/OFF control is provided.

    Download MEAN WELL DKA30 Datasheet (PDF)

    Series section: PDF pages 12–13.

    Model and output specifications

    Complete model DKA30A-12
    Model selection DKA30 identifies the dual-output series. Input code A selects 9–18 V DC. Output code 12 selects ±12 V DC.
    Output voltage ±12 V DC relative to Common. Positive and negative output rails share the Common return.
    Output current range 125–1250 mA per output rail. Maintain the stated minimum current on each output.
    Rated power and load limit 30 W total across all two output rails. Observe every rail current limit and the combined output-power limit together.
    Voltage accuracy ±2.0%.
    Line regulation ±0.5%, measured from low to high input voltage at rated load.
    Load regulation ±0.5%, measured over 10–100% of rated load.
    Ripple and noise 100 mVp-p maximum, measured at 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
    Switching frequency 100 kHz minimum.

    Input and protection

    Input voltage 9–18 V DC; 2:1 input range.
    Input current 3.2 A at full load; 40 mA at no load, at the reference test conditions.
    Typical efficiency 80% at the reference test conditions.
    Input filter and protection Built-in EMI filter with a Pi network. An external input fuse is recommended.
    Overload protection 110–250% of rated output power; hiccup mode with automatic recovery after the fault is removed.
    Short-circuit protection All outputs are protected; hiccup mode with automatic recovery after the fault is removed.
    Fault-duration limit Do not allow operation in overload or short circuit for more than 30 seconds.
    Optional configurations The catalog lists a 4:1 input-range option. The stated specifications for this model are 2:1 and 1.5 kV DC; confirm the optional configuration with the manufacturer before selection.

    Control and adjustment

    Remote ON/OFF control R.C. is referenced to −Vin. The stated power-ON condition is >4.5–5.5 V DC or open circuit; power OFF is below 0.8 V DC or short circuit to −Vin. Follow the specified control conditions.
    External output trim ±10% adjustment. Connect a trim resistance between Trim pin 8 and −Vout pin 7 to raise the output, or between Trim pin 8 and +Vout pin 5 to lower it. A 500 kΩ trimpot example is shown in the complete circuit diagram. Observe per-rail current and combined power limits when adjusting.

    Operating conditions and isolation

    Operating temperature and cooling −40 to +85°C, with free-air convection and the specified load derating.
    Load derating Full load through 71°C; reduce to 80% load at 85°C. Apply the curve only within the specified operating range.
    Working humidity 20–90% RH, non-condensing.
    Storage conditions −40 to +105°C; 10–95% RH.
    Temperature coefficient ±0.03%/°C over 0–50°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 Normal input, rated load, 25°C ambient and 70% RH, unless otherwise stated.
    Input-to-output withstand voltage 1.5 kV DC.
    Isolation resistance 100 MΩ at 500 V DC, 25°C and 70% RH.

    Mechanical design and installation

    Dimensions 50.8 × 50.8 × 21 mm (L × W × H).
    Case and production testing Metal case with shielding on all six sides and epoxy encapsulation; 100% burn-in test.
    Pin assignment 1 R.C.; 2 No Pin; 3 −Vin; 4 +Vin; 5 +Vout; 6 COM; 7 −Vout; 8 Trim. Check the bottom-view orientation before PCB assembly.
    Mechanical drawing details Pin diameter: 1.0 mm (+0.2/−0.1 mm); lead length: 5.8 mm. Bottom-view drawing: pin-row separation is 45.72 mm; the four output-side pins span 30.48 mm. Follow the complete drawing for the asymmetric input-side positions.
    Unit weight reference 110 g, explicitly stated as a catalog packing reference per unit. Tube and carton gross weights are separate packaging data.

    EMC and manufacturer references

    Safety standards EAC TP TC 020/2011 approved.
    Catalog approvals FCC, EAC, CE and UKCA are listed in the manufacturer’s features.
    EMC emission BS EN/EN 55032 Class A; FCC Part 15 Class A; EAC TP TC 020.
    EMC immunity BS EN/EN 61000-4-2, -4-3, -4-4, -4-5, -4-6 and -4-8; light-industrial level, criterion A; EAC TP TC 020.
    MTBF reference 100 khrs minimum to MIL-HDBK-217F at 25°C; a reliability reference, not a service-life guarantee.
    Manufacturer warranty reference The catalog states a 2-year manufacturer warranty.

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