Mean Well DDR-15G-12 DC-DC Converter

Name: Mean Well DDR-15G-12 DC-DC Converter - 15W - 9~36V in 12V out 1.25A
Brand: Mean Well
SKU: DDR-15G-12
Price: 22.36 USD
Availability: InStock

Overview

DDR-15G-12 is the 12V output model of this series: rated current 1.25A, rated power 15W, typical efficiency 85%.

DDR-15 series is a 15W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (17.5mm), 4: 1 ultra wide input voltage, -40~+85℃ wide operating temperature, 4KVdc I/O isolation, adjustable output voltage ( 10%) and full protective functions...etc. This series has two input options: 9~36V /18~75V and various output options: 3.3V / 5V / 12V / 15V / 24V and can be used for industrial control, security control, communication system and other fields. Suitable applications are DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

Width only 17.5mm (1SU)
4:1 ultra wide input range
-40~+85℃ wide working temperature
No minimum load required
DC output adjustable (±10%)
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
Protections: Short circuit / Overload / Over voltage / Input reverse polarity / Input under voltage protection
4KVdc I/O isolation(Reinforced isolation)
3 years warranty

Specifications

DDR-15G-12Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 1.25A
CURRENT RANGE: 0 ~ 1.25A
RATED POWER: 15W
RIPPLE & NOISE (max.)^Note.2: 60mVp-p
VOLTAGE ADJ. RANGE: 9 ~ 13.2V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME: 120ms, 85ms at full load
HOLD UP TIME (Typ.): G-type: 8ms@24Vdc input
EXTERNAL CAPACITANCE LOAD (Max.): 1200μF

INPUT

VOLTAGE RANGE^Note.4: 9 ~ 36Vdc
EFFICIENCY (Typ.): 85%
DC CURRENT (Typ.): 0.8A /24Vdc
INRUSH CURRENT (Typ.): 15A /24Vdc

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 13.8 ~ 16.2V Protection type : Shut down o/p voltage, re-power on to recover
REVERSE POLARITY: By internal MOSFET, no damage, recovers automatically after fault condition removed
UNDER VOLTAGE LOCKOUT: Power ON≥9V , OFF≤8.5V

ENVIRONMENT

WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 5 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 5 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃)
VIBRATION: Component:10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6
OPERATING ALTITUDE: 5000 meters

SAFETY & EMC (Note 5)

SAFETY STANDARDS: UL 62368-1, IEC 62368-1, AS/NZS 62368.1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4KVdc
ISOLATION RESISTANCE: I/P-O/P>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 Class B
Radiated BS EN/EN55032 Class B
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line; criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	Class B
Radiated	BS EN/EN55032	Class B
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line; criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 3446.2K hrs min. Telcordia SR-332 (Bellcore) ; 907.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 17.5*90*54.5mm (W*H*D)
PACKING: 68g; 160pcs/12Kg/1.14CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 24VDC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltage. Please check the derating curve for more details.
5. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

DDR-15G-12 Block Diagram — Block Diagram

DDR-15G-12 Derating Curve — Derating Curve

DDR-15G-12 Mechanical Specification — Mechanical Specification

Typical applications

Downloads

Certificates3

UL Certificate(DDR-15)(EN) PDF Download

CE Certificate(DDR-15)(EN) PDF Download

EMC Certificate(DDR-15)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the DDR-15G-12 to power a 12V sensor or relay module from a 24V DC control bus?

Yes. The DDR-15G-12 accepts 9-36V DC input and outputs 12V at 1.25A (15W). A 24V control bus is in the middle of the input range, and 15W is sufficient for a few small sensors, a relay board, or a status display panel. The slim 17.5mm width conserves valuable panel space.

Is the DDR-15G-12 suitable for powering a small embedded computer or IoT gateway from a 12V or 24V battery?

Yes, as long as the battery voltage stays within 9-36V; note that derating may be needed at low input voltage. Many compact single-board computers and IoT gateways draw under 15W at 12V. The 4KVdc input-to-output isolation separates the embedded device from the battery bus in mobile or vehicle-mounted installations.

Can I use the DDR-15G-12 inside a compact DIN rail enclosure where space is limited?

Yes. It measures just 17.5 x 90 x 54.5 mm (W x H x D) and weighs 68 g, making it a good fit for small junction boxes and crowded control panels.

Does the DDR-15G-12 work in harsh-temperature industrial environments?

Yes. It is rated for -40°C to +85°C (with derating per the derating curve), which covers freezing warehouses, outdoor enclosures, and hot factory floors. It is vibration-tested at 10-500Hz, 2G along X, Y and Z axes. Mount it inside a sealed enclosure for protection against moisture and debris.

What is the difference between the DDR-15G and DDR-15L series at 12V?

Both output 12V at 1.25A (15W) in the same 17.5 x 90 x 54.5 mm package. The DDR-15G-12 accepts a 9-36V DC input (4:1 range), while the DDR-15L-12 accepts an 18-75V DC input. The G and L suffixes denote input voltage range variants, so choose the one that matches your DC bus voltage.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well DDR-15G-3.3 DC-DC Converter - 11.6W - 9~36V in 3.3V out 3.5A	11.6W	3.3V	3.5A	IP20	$19.67	View
Mean Well DDR-15G-24 DC-DC Converter - 15W - 9~36V in 24V out 630mA	15W	24V	0.63A	IP20	$22.36	View
Mean Well DDR-15G-15 DC-DC Converter - 15W - 9~36V in 15V out 1A	15W	15V	1A	IP20	$19.67	View
Mean Well DDR-15G-5 DC-DC Converter - 15W - 9~36V in 5V out 3A	15W	5V	3A	IP20	$22.36	View

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Mean Well DDR-15G-12 DC-DC Converter - 15W - 9~36V in 12V out 1.25A

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