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Mean Well DKMW20G-12 DC-DC Converter - 20W - 18~75V in ±12V out 830mA

Name: Mean Well DKMW20G-12 DC-DC Converter - 20W - 18~75V in ±12V out 830mA
Brand: Mean Well
SKU: DKMW20G-12
Price: 39.26 USD
Availability: InStock

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Overview

DKMW20G-12 is the ±12V output model of this series: rated power 20W, typical efficiency 87%.

SKMW20 and DKMW20 series are 20W isolated and regulated module type DC-DC converter with DIP 1"x1" package. It features international standard pins, a high efficiency up to 89%, wide working temperature range -40~+85℃, 1.5KVDC I/P-O/P isolation voltage, compliance to BS EN/EN55032 radiated Class A without additional components, continuous-mode short circuit, overload, over temperature, input under voltage protection, remote ON/OFF and trimmable output voltage etc. The models account for different input voltage 9~36V and 18~75V 4:1 ultrawide input range, and various output voltage, 3.3V /5V/12V/15V for single output and ±12V/±15V for dual outputs, which are suitable for all kinds of systems, such as industrial control, telecommunication field, distributed power architecture, and so on.

Features

DIP 1"x1" package with industry standard pinout
4:1 ultrawide input range
Operating temperature range -40 ~ +85℃
No minimum load required
Comply to BS EN/EN55032 radiated Class A without additional components
High efficiency up to 89%
Protections: Short circuit (Continuous) / Overload / Over voltage / Input under voltage
1.5KVDC I/O isolation
Remote ON/OFF control and Triming output (±10%)
3 years warranty

Specifications

DKMW20G-12Specifications from the official datasheet (2024-04-30 edition)

INPUT

INPUT VOLTAGE (RANGE): 48V (18 ~ 75V)
INPUT CURRENT NO LOAD: 8mA
INPUT CURRENT FULL LOAD: 473mA
VOLTAGE RANGE: 18~75Vdc
SURGE VOLTAGE (100ms max.): 24Vin models : 50Vdc, 48Vin models : 100Vdc
FILTER: Pi type
PROTECTION: Fuse recommended. 24Vin models: 3A delay time Type, 48Vin models: 1.5A delay time Type
INTERNAL POWER DISSIPATION: 500mW

OUTPUT

OUTPUT VOLTAGE: ±12V
OUTPUT CURRENT: ±0 ~ 830mA
EFFICIENCY (TYP.): 87%
CAPACITOR LOAD (MAX.)^{* For each output}: *800μF
VOLTAGE ACCURACY: ±1.5%
RATED POWER: 20W
RIPPLE & NOISE^Note.2: 3.3/5Vout models: 75mVp-p, other models:100mVp-p
LINE REGULATION^Note.3: ±0.2%
LOAD REGULATION^Note.4: Single output models: ±0.2%, Dual output models:±1%
SWITCHING FREQUENCY (Typ.): 3.3/5Vout models: 270KHz, other models: 330KHz
EXTERNAL TRIM ADJ. RANGE (Typ.): ±10% (Single output model only)

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 170% rated output power Protection type : Recovers automatically after fault condition is removed
OVER VOLTAGE: Protection type : Clamp by diode
UNDER VOLTAGE LOCKOUT Start-up voltage: 24Vin (F-type): 8.8Vdc, 48Vin (G-type): 17Vdc
UNDER VOLTAGE LOCKOUT Shutdown voltage: 24Vin (F-type): 8Vdc, 48Vin (G-type): 16Vdc

FUNCTION

REMOTE CONTROL: Power ON: R.C. ~ -Vin >3.5~75Vdc or open circuit ; Power OFF: R.C. ~ -Vin <1.2Vdc or short

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +105℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 60℃)
SOLDERING TEMPERATURE: 1.5mm from case of 1 ~ 5 sec./260℃ max.
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note.5)

SAFETY STANDARDS: EAC TP TC 020/2011 (EAC TP TC 004 for 48Vin type only) approved
WITHSTAND VOLTAGE: I/P-O/P:1.5KVDC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 1500pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32) N/A
Radiated BS EN/EN55032(CISPR32) Class A
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT/Bursts BS EN/EN61000-4-4 Level 1, 0.5KV
Surge BS EN/EN61000-4-5 Level 1, 0.5KV Line-Line
Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.)
Magnetic Field BS EN/EN61000-4-8 Level 2, 3A/m

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32)	N/A
Radiated	BS EN/EN55032(CISPR32)	Class A

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT/Bursts	BS EN/EN61000-4-4	Level 1, 0.5KV
Surge	BS EN/EN61000-4-5	Level 1, 0.5KV Line-Line
Conducted	BS EN/EN61000-4-6	Level 2, 3V(e.m.f.)
Magnetic Field	BS EN/EN61000-4-8	Level 2, 3A/m

OTHERS

MTBF: 3.3/5Vout models: 910Khrs, Other models: 1220Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 25.4*25.4*10.2mm (1*1*0.4 inch)
CASE MATERIAL: Black coated copper with non-conductive base
PACKING: 19g ; 12pcs/per tube, 600pcs/50 tube/per carton

Test conditions and notes5

1.All parameters are specified at normal input(F:24Vdc, G:48Vdc), rated load, 25℃ 70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 0% to 100% rated load.
5.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)

Technical drawings

DKMW20G-12 SKMW20 & DKMW20 series — SKMW20 & DKMW20 series

DKMW20G-12 SKMW20 & DKMW20 series (2) — SKMW20 & DKMW20 series (2)

DKMW20G-12 Plug Assignment — Plug Assignment

Typical applications

Downloads

Certificates2

Certificate (SKMW20-DKMW20-CE-dec)(EN) PDF Download

Certificate (SKMW-DKMW20-UK-dec)(EN) PDF Download

Test reports1

Test Report (DKMW20G-12)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the DKMW20G-12 in a 24V or 48V industrial control panel?

Yes. The DKMW20G-12 accepts an 18-75V input range, so it fits systems built around 24V or 48V DC buses. It provides a ±12V constant-voltage output with up to 20W available.

Is this converter suitable for embedded electronics that need 12V from a wide DC input?

It is designed for that type of use. The unit combines an 18-75V input range with a ±12V constant-voltage output in a 25.4 × 25.4 × 10.2 mm package. That makes it relevant where board space is limited and the source voltage can vary across that range.

Can this model be used in automation equipment with fluctuating DC supply levels?

Yes, if the equipment stays within the 18-75V input range and needs a ±12V constant-voltage output. Its 20W rating makes it better suited to lower-power automation and control circuits rather than larger loads. The wide operating temperature range of -40°C to +85°C also supports demanding equipment environments.

Is the DKMW20G-12 suitable for outdoor or washdown locations?

No IP rating is listed for this model, so it should be treated as a converter for protected installations rather than exposed outdoor or washdown use. Its operating temperature range is -40°C to +85°C, but temperature capability is separate from ingress protection. A dry, enclosed location is the safer fit when no IP rating is specified.

What is the difference between the DKMW20G-12 and DKMW20G-15?

Both models are 20W converters with an 18-75V input range, the same 25.4 × 25.4 × 10.2 mm dimensions, 19g weight, -40°C to +85°C operating range, and a 3-year warranty. The difference is the output: the DKMW20G-12 provides ±12V with ±830mA listed output current, while the DKMW20G-15 provides ±15V with ±660mA listed output current. Selection comes down to the output voltage and current listed for each version.

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