MEAN WELL SDM30 series: Isolated single-output DC-DC converter - SDM30-12S3

Description

SDM30-12S3 — Isolated single-output DC-DC converter

MEAN WELL SDM30-12S3 is an isolated, regulated single-output DC-DC converter with 9.2–18 V DC input and 3.3 V DC output. Its rated output is 16.5 W with a 0–5 A output-current range. Built-in remote ON/OFF and external output trimming support system control.

Download MEAN WELL SDM30 Datasheet (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

Series section: PDF pages 3–5.

Model and output specifications

Output voltage 3.3 V DC.
Rated output current 5 A.
Output current range 0–5 A.
Rated output power 16.5 W; use this model-specific rating rather than the 30 W series name.
Voltage tolerance ±3.0%; includes setup tolerance, line regulation and load regulation.
Line regulation ±1.0%.
Load regulation ±1.0%.
Ripple and noise 75 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 225 kHz fixed.
Output adjustment ±13% typical, by an external fixed resistor or trimpot. Connect a trim resistor between TRM (pin 8) and −Vout (pin 7) to raise the output, or between TRM and +Vout (pin 6) to lower it. The drawing shows a 10 kΩ trimpot across the output with its wiper connected to TRM.

Input, control and protection

Input voltage 9.2–18 V DC; rated input 12 V DC; 2:1 input range.
Typical efficiency 77% at 12 V DC input, rated load and 25°C.
Input DC current 3.6 A.
Idle input current 35 mA.
Input wiring and capacitance For DC source wires at least 5 cm long, an external aluminum input capacitor of 47–100 µF is required.
Remote ON/OFF Control input: pin 4; control common: pin 2 (−Vin). Compatible with CMOS or open-collector TTL. ON: +5.5 V DC minimum or open circuit. OFF: +2.5 V DC maximum or short to pin 2.
Overload protection Above 105% of rated output power; overpower limiting with automatic recovery after the fault is removed.
Output overvoltage protection 3.8–4.95 V; output voltage shuts off with clamping by a Zener diode.
Short-circuit protection Constant-current limiting with automatic recovery after the fault is removed. Do not sustain a short circuit for more than 60 seconds.

Operating conditions and isolation

Operating temperature and cooling −25 to +85°C; free-air convection. Apply the model-specific load-derating curve.
Load derating Horizontal mounting: the 12S curve permits 100% load through approximately +35°C, decreasing to approximately 30% at +85°C.
Altitude derating Above 2000 m (6500 ft), reduce allowable ambient temperature by 3.5°C per 1000 m for this fanless converter.
Storage conditions −25 to +85°C; 0–95% RH.
Temperature coefficient ±0.03%/°C over 0–50°C.
Reference test conditions 12 V DC input, rated load and 25°C ambient, unless otherwise specified.
Input-to-output isolation voltage 1 kV DC.
Isolation resistance 100 MΩ between input and output, tested at 500 V DC, 25°C and 70% RH.
Input-to-output capacitance 1000 pF, as listed in the series features.

Mechanical design and installation

Dimensions 50.8 × 50.8 × 16 mm (L × W × H).
Pin assignment Pin 1: +Vin; pin 2: −Vin; pins 3 and 5: no pin; pin 4: control ON/OFF; pin 6: +Vout; pin 7: −Vout; pin 8: Trim. Check the bottom-view orientation before PCB assembly.
Mechanical drawing details Case No. SDM-30. Drawing tolerance ±1 mm; pin diameter 1 mm; lead projection 4.8 mm typical. Pin-row spacing is 45.72 mm; use the complete bottom-view dimensions for PCB layout.
Unit weight reference 100 g, stated as a catalog packing reference per unit.
Manufacturer packaging reference 150 pieces per carton, with 15.8 kg carton gross weight and 0.94 CUFT packing volume; separate from the catalog per-unit reference.

Standards and manufacturer references

Safety standards Designed with reference to LVD; EAC TP TC 004 approved.
EMC emission BS EN/EN55032 (CISPR32) Class B and EAC TP TC 020.
EMC immunity The catalog lists BS EN/EN61000-2,3,4,6,8 and BS EN/EN55035; light-industry level; EAC TP TC 020.
Catalog markings EAC, CE and UKCA are shown in the catalog.
Manufacturing test 100% full-load burn-in test.
Manufacturer warranty reference The catalog states a 2-year manufacturer warranty.
MTBF reference 8,083,500 hours minimum, Telcordia SR-332 (Bellcore); 777,200 hours minimum, MIL-HDBK-217F at 25°C. A statistical reliability reference, not a service-life guarantee.

Equipment integration

EMC system verification SDM30 is a component power supply. Its catalog EMC results use a 230 × 230 × 1 mm metal plate. Reconfirm EMC in the finished equipment with the converter installed and connected to its load.
EMI test guidance The linked EMI reference describes representative metal-plate tests with twisted output wires laid flat within the plate area. The test arrangement depends on the intended application.

MEAN WELL SDM30 series: Isolated single-output DC-DC converter - SDM30-12S3

Product form

SDM30-12S3 — Isolated single-output DC-DC converter MEAN WELL SDM30-12S3 is an isolated, regulated single-output DC-DC converter with 9.2–18 V DC... Read more

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    Description

    SDM30-12S3 — Isolated single-output DC-DC converter

    MEAN WELL SDM30-12S3 is an isolated, regulated single-output DC-DC converter with 9.2–18 V DC input and 3.3 V DC output. Its rated output is 16.5 W with a 0–5 A output-current range. Built-in remote ON/OFF and external output trimming support system control.

    Download MEAN WELL SDM30 Datasheet (PDF)
    Download MEAN WELL EMI Testing Guidance (PDF)

    Series section: PDF pages 3–5.

    Model and output specifications

    Output voltage 3.3 V DC.
    Rated output current 5 A.
    Output current range 0–5 A.
    Rated output power 16.5 W; use this model-specific rating rather than the 30 W series name.
    Voltage tolerance ±3.0%; includes setup tolerance, line regulation and load regulation.
    Line regulation ±1.0%.
    Load regulation ±1.0%.
    Ripple and noise 75 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 225 kHz fixed.
    Output adjustment ±13% typical, by an external fixed resistor or trimpot. Connect a trim resistor between TRM (pin 8) and −Vout (pin 7) to raise the output, or between TRM and +Vout (pin 6) to lower it. The drawing shows a 10 kΩ trimpot across the output with its wiper connected to TRM.

    Input, control and protection

    Input voltage 9.2–18 V DC; rated input 12 V DC; 2:1 input range.
    Typical efficiency 77% at 12 V DC input, rated load and 25°C.
    Input DC current 3.6 A.
    Idle input current 35 mA.
    Input wiring and capacitance For DC source wires at least 5 cm long, an external aluminum input capacitor of 47–100 µF is required.
    Remote ON/OFF Control input: pin 4; control common: pin 2 (−Vin). Compatible with CMOS or open-collector TTL. ON: +5.5 V DC minimum or open circuit. OFF: +2.5 V DC maximum or short to pin 2.
    Overload protection Above 105% of rated output power; overpower limiting with automatic recovery after the fault is removed.
    Output overvoltage protection 3.8–4.95 V; output voltage shuts off with clamping by a Zener diode.
    Short-circuit protection Constant-current limiting with automatic recovery after the fault is removed. Do not sustain a short circuit for more than 60 seconds.

    Operating conditions and isolation

    Operating temperature and cooling −25 to +85°C; free-air convection. Apply the model-specific load-derating curve.
    Load derating Horizontal mounting: the 12S curve permits 100% load through approximately +35°C, decreasing to approximately 30% at +85°C.
    Altitude derating Above 2000 m (6500 ft), reduce allowable ambient temperature by 3.5°C per 1000 m for this fanless converter.
    Storage conditions −25 to +85°C; 0–95% RH.
    Temperature coefficient ±0.03%/°C over 0–50°C.
    Reference test conditions 12 V DC input, rated load and 25°C ambient, unless otherwise specified.
    Input-to-output isolation voltage 1 kV DC.
    Isolation resistance 100 MΩ between input and output, tested at 500 V DC, 25°C and 70% RH.
    Input-to-output capacitance 1000 pF, as listed in the series features.

    Mechanical design and installation

    Dimensions 50.8 × 50.8 × 16 mm (L × W × H).
    Pin assignment Pin 1: +Vin; pin 2: −Vin; pins 3 and 5: no pin; pin 4: control ON/OFF; pin 6: +Vout; pin 7: −Vout; pin 8: Trim. Check the bottom-view orientation before PCB assembly.
    Mechanical drawing details Case No. SDM-30. Drawing tolerance ±1 mm; pin diameter 1 mm; lead projection 4.8 mm typical. Pin-row spacing is 45.72 mm; use the complete bottom-view dimensions for PCB layout.
    Unit weight reference 100 g, stated as a catalog packing reference per unit.
    Manufacturer packaging reference 150 pieces per carton, with 15.8 kg carton gross weight and 0.94 CUFT packing volume; separate from the catalog per-unit reference.

    Standards and manufacturer references

    Safety standards Designed with reference to LVD; EAC TP TC 004 approved.
    EMC emission BS EN/EN55032 (CISPR32) Class B and EAC TP TC 020.
    EMC immunity The catalog lists BS EN/EN61000-2,3,4,6,8 and BS EN/EN55035; light-industry level; EAC TP TC 020.
    Catalog markings EAC, CE and UKCA are shown in the catalog.
    Manufacturing test 100% full-load burn-in test.
    Manufacturer warranty reference The catalog states a 2-year manufacturer warranty.
    MTBF reference 8,083,500 hours minimum, Telcordia SR-332 (Bellcore); 777,200 hours minimum, MIL-HDBK-217F at 25°C. A statistical reliability reference, not a service-life guarantee.

    Equipment integration

    EMC system verification SDM30 is a component power supply. Its catalog EMC results use a 230 × 230 × 1 mm metal plate. Reconfirm EMC in the finished equipment with the converter installed and connected to its load.
    EMI test guidance The linked EMI reference describes representative metal-plate tests with twisted output wires laid flat within the plate area. The test arrangement depends on the intended application.

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