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Mean Well DCW03A-05 DC-DC Converter - 3W - 9~18V in ±5V out 300mA
Overview
DCW03A-05 is the ±5V output model of this series: rated power 3W, typical efficiency 74%.
Features
- 2:1 wide input range
- 4:1 wide input range(option)
- 1000VDC I/O isolation
- 3000VDC I/O isolation(option)
- Built-in EMI filter
- Protections: Short circuit / Overload
- Cooling by free air convection
- Five-sided shield metal case
- 100% burn-in test
- Low cost / High reliability
- Approvals: FCC / CE
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- ±5V
- CURRENT RANGE
- ±30 ~ ±300mA
- RATED POWER
- 3W
- RIPPLE & NOISE (max.)Note.2
- 50mVp-p
- LINE REGULATIONNote.3
- ±0.5%
- LOAD REGULATIONNote.4
- ±0.5%
- VOLTAGE ACCURACY
- ±2.0%
- SWITCHING FREQUENCY
- 50KHz min.
INPUT
- VOLTAGE RANGE
- 9 ~ 18VDC
- EFFICIENCY (Typ.)
- 74%
- DC CURRENT Full load
- 338mA
- DC CURRENT No load
- 18mA
- FILTER
- Pi network
- PROTECTION
- Fuse recommended
PROTECTION (Note. 5)
- OVERLOAD
- 160 ~ 250% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- SHORT CIRCUIT
- All output equipped with short circuit Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -40 ~ + 71℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +105℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03% / ℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- EAC TP TC 004 approved
- WITHSTAND VOLTAGE
- I/P-O/P:1KVDC
- ISOLATION RESISTANCE
- I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
- ISOLATION CAPACITANCE
- 80pF max.
- EMC EMISSION
- Compliance to EN55032 Class B, FCC part 15 Class B , EAC TP TC 020
- EMC IMMUNITY
- Compliance to EN61000-4-2,3,4,5,6,8, light industry level, criteria A , EAC TP TC 020
OTHERS
- MTBF
- 900khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 31.8*20.3*12.2mm or 1.25"*0.80"*0.48" inch (L*W*H)
- WEIGHT
- 15g
Test conditions and notes5
- 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
- 3.Line regulation is measured from low line to high line at rated load.
- 4.Load regulation is measured from 10% to 100% rated load.
- 5.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.
Technical drawings
Downloads
Datasheet1
Certificates3
FAQ
What is the Mean Well DCW03A-05 designed for?
The DCW03A-05 is a 3W DC-DC converter intended for applications that need regulated dual output power from a DC source. This model accepts 9 to 18V DC input and provides a ±5V DC output, which makes it suitable for compact embedded and industrial electronics that require isolated onboard power conversion.
What are the key electrical specifications of the DCW03A-05?
This model is rated for 3W output power with a ±5V output and an output current range of ±30 to ±300mA. It has a typical efficiency of 74%, voltage accuracy of ±2%, and line and load regulation of ±0.5%.
Does the DCW03A-05 provide input-to-output isolation?
Yes. The DCW03A-05 provides 1000V DC input-to-output isolation (withstand voltage), with an isolation resistance of 100MΩ at 500V DC. This can help where electrical isolation is required between the input source and the powered circuit.
What protection features are included in this DC-DC converter?
The DCW03A-05 includes short circuit protection on all outputs and overload protection, both in hiccup mode with automatic recovery once the fault is removed. Overload protection is specified at 160% to 250% of rated output power; operation in overload or short circuit should not exceed 30 seconds.
Can the DCW03A-05 be used in demanding temperature environments?
This model is specified for operation from -40°C to +71°C, subject to the output derating curve. Its storage temperature range is -40°C to +105°C, which supports use in a wide range of industrial and enclosed equipment environments.
What makes the DCW03A-05 suitable for compact equipment designs?
The converter uses free air convection cooling and a five-sided shield metal case, which supports reliable operation without adding active cooling hardware. Its compact dimensions of 1.25 x 0.8 x 0.48 inches also make it easier to use where board or enclosure space is limited.
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