Mean Well DDR-15L-15 DC-DC Converter - 15W

Name: Mean Well DDR-15L-15 DC-DC Converter - 15W - 18~75V in 15V out 1A
Brand: Mean Well
SKU: DDR-15L-15
Price: 19.67 USD
Availability: InStock

Overview

DDR-15L-15 is the 15V output model of this series: rated current 1A, rated power 15W, typical efficiency 86%.

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 protection level and voltage drop compensation along cable...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...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-15L-15Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 15V
RATED CURRENT: 1A
CURRENT RANGE: 0 ~ 1A
RATED POWER: 15W
RIPPLE & NOISE (max.)^Note.2: 75mVp-p
VOLTAGE ADJ. RANGE: 13.5 ~ 16.5V
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.): L-type: 16ms@48Vdc input
EXTERNAL CAPACITANCE LOAD (Max.): 1200μF

INPUT

VOLTAGE RANGE^Note.4: 18 ~ 75Vdc
EFFICIENCY (Typ.): 86%
DC CURRENT (Typ.): 0.4A /48Vdc
INRUSH CURRENT (Typ.): 15A /48Vdc

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 17.25 ~ 20.25V 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≥18V , OFF≤17V

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: 2000 meters

SAFETY & EMC

SAFETY STANDARDS: IEC 62368-1 (LVD) ,AS/NZS 62368.1 approved; Design refer to UL508
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: 907K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 17.5*90*54.5mm (W*H*D)
PACKING: 68g; 160pcs/12Kg/1.19CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 48VDC 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-15L-15 Block Diagram — Block Diagram

DDR-15L-15 Derating Curve — Derating Curve

DDR-15L-15 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-15L-15 to power a 15V industrial instrument from a 48V DC distribution system?

Yes. The DDR-15L-15 accepts 18-75V DC input and outputs a stable 15V at up to 1A (15W). This makes it well suited for powering legacy 15V instruments, PLCs, or measurement devices installed in systems with a 48V main bus.

Is the DDR-15L-15 a good choice for powering 15V analog signal conditioning boards on DIN rail?

Yes. The DDR-15L-15 provides a regulated 15V output with 75mVp-p maximum ripple and noise and 4KVdc input-to-output isolation. Its slim 17.5 mm width allows it to fit beside signal conditioning modules in tight panel layouts.

Can this converter supply 15V to audio or communications equipment in a vehicle or marine vessel with a 24V or 48V DC system?

The DDR-15L-15 accepts 18-75V DC input, which covers both 24V and 48V nominal vehicle and marine electrical systems. It delivers 15V at 1A, suitable for small communication radios, audio amplifiers, or navigation displays that require a 15V supply.

Can the DDR-15L-15 operate in a freezer room or extreme cold storage environment?

Yes. The DDR-15L-15 is rated for operation from -40°C to +85°C (with derating per the derating curve), so it can function in cold storage, freezer rooms, and other extreme temperature environments. Its humidity rating is 5-95% RH non-condensing, so it must be protected from condensation and direct moisture.

Is the DDR-15L-15 suitable for powering 15V test and measurement equipment in a rack-mounted DC power distribution setup?

Yes. With its 18-75V input range and 15V/1A output, the DDR-15L-15 can step down a 48V or 24V rack bus to 15V for test instruments, calibration devices, or lab equipment. Output ripple and noise is 75mVp-p maximum with ±2.0% voltage tolerance.

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Mean Well DDR-15L-15 DC-DC Converter - 15W - 18~75V in 15V out 1A

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