Mean Well DDR-15L-5 DC-DC Converter - 15W

Name: Mean Well DDR-15L-5 DC-DC Converter - 15W - 18~75V in 5V out 3A
Brand: Mean Well
SKU: DDR-15L-5
Price: 22.36 USD
Availability: InStock

Overview

DDR-15L-5 is the 5V output model of this series: rated current 3A, 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 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-5Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 5V
RATED CURRENT: 3A
CURRENT RANGE: 0 ~ 3A
RATED POWER: 15W
RIPPLE & NOISE (max.)^Note.2: 50mVp-p
VOLTAGE ADJ. RANGE: 4.5 ~ 5.5V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1%
SETUP, RISE TIME: 120ms, 85ms at full load
HOLD UP TIME (Typ.): L-type: 16ms@48Vdc input
EXTERNAL CAPACITANCE LOAD (Max.): 3300μF

INPUT

VOLTAGE RANGE^Note.4: 18 ~ 75Vdc
EFFICIENCY (Typ.): 85%
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: 5.75 ~ 7V 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-5 Derating Curve — Derating Curve

DDR-15L-5 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-5 to power 5V embedded systems from a 48V telecom bus?

Yes. The DDR-15L-5 accepts 18-75V DC input and outputs 5V at up to 3A (15W). It is designed for exactly this kind of application, converting 48V telecom or industrial DC buses to 5V for embedded computers, single-board PCs, or USB-powered peripherals.

Is the DDR-15L-5 suitable for powering 5V LED status indicators and small displays in a 48V battery-backed control panel?

Yes. The DDR-15L-5 can take 48V battery bus power (within its 18-75V range) and provide a 5V/3A output for LED indicators, small character LCDs, or OLED displays inside control panels. Output voltage tolerance is ±2.0% including line regulation, and input and output are isolated to 4KVdc.

Can this converter power 5V Raspberry Pi or similar SBCs in an industrial enclosure fed from a 24V or 48V bus?

The DDR-15L-5 requires a minimum 18V input, so a 24V bus (typically 20-28V) falls within range, as does a 48V bus. It provides 5V at 3A (15W), which can suit Raspberry Pi-class boards and similar SBCs whose total draw stays within 15W. Derating may be needed at low input voltage, so check the derating curve when running from a 24V bus.

How does the DDR-15L-5 differ from the DDR-15G-5?

Both converters output 5V at 3A (15W) in the same 17.5 x 90 x 54.5 mm housing. The DDR-15G-5 accepts 9-36V DC input, making it ideal for 12V or 24V source buses. The DDR-15L-5 accepts 18-75V DC input, making it the right choice for 48V telecom or higher-voltage DC systems.

Can the DDR-15L-5 operate reliably inside sealed IP65 enclosures without ventilation?

The DDR-15L-5 is rated for a working temperature of -40°C to +85°C, with output derating at higher temperatures per the datasheet derating curve. In a sealed enclosure, make sure the internal ambient temperature and your load stay within that curve, especially in direct-sun outdoor installations where enclosure temperatures can rise significantly.

Can I use the DDR-15L-5 to power 5V USB-based diagnostic equipment in mining or heavy equipment with a 48V electrical system?

Yes. The 18-75V input range covers 48V nominal systems used in mining vehicles and heavy equipment. The DDR-15L-5 provides 5V/3A for USB diagnostic tools, portable data loggers, or monitoring interfaces. Its -40°C to +85°C working temperature range (with derating per the derating curve) and 10-500Hz, 2G vibration rating suit these environments.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well DDR-15L-12 DC-DC Converter - 15W - 18~75V in 12V out 1.25A	15W	12V	1.25A	IP20	$22.36	View
Mean Well DDR-15L-24 DC-DC Converter - 15W - 18~75V in 24V out 630mA	15W	24V	0.63A	IP20	$22.36	View
Mean Well DDR-15L-3.3 DC-DC Converter - 11.6W - 18~75V in 3.3V out 4.5A	15W	3.3V	4.5A	IP20	$19.67	View
Mean Well DDR-15L-15 DC-DC Converter - 15W - 18~75V in 15V out 1A	15W	15V	1A	IP20	$19.67	View

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Mean Well DDR-15L-5 DC-DC Converter - 15W - 18~75V in 5V out 3A

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