Over 15 years experience of providing support of MEAN WELL Power Supplies
Mean Well DCW05B-12 DC-DC Converter - 5W - 18~36V in ±12V out 230mA
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DCW05B-12 is the ±12V output model of this series: rated power 5.5W, typical efficiency 82%.
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
- ±12V
- CURRENT RANGE
- ±46 ~ ±230mA
- RATED POWER
- 5.5W
- RIPPLE & NOISE (max.)Note.2
- 60mVp-p
- LINE REGULATIONNote.3
- ±0.5%
- LOAD REGULATIONNote.4
- ±0.5%
- VOLTAGE ACCURACY
- ±2.0%
- SWITCHING FREQUENCY
- 50KHz min.
INPUT
- VOLTAGE RANGE
- 18 ~ 36VDC
- EFFICIENCY (Typ.)
- 82%
- DC CURRENT Full load
- 286mA
- DC CURRENT No load
- 21mA
- FILTER
- Pi network
- PROTECTION
- Fuse recommended
PROTECTION
- OVERLOAD
- 150 ~ 250% rated output load Protection type : Shunt down o/p voltage, re-power on to recover
- SHORT CIRCUIT
- All output equipped with over current protection Protection type : Shun down o/p voltage, re-power on to recover
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./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC (Note. 5)
- 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 (L*W*H) or 1.25"*0.80"*0.48" inch (L*W*H)
- PACKING
- 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 20% to 100% rated load.
- 5.The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.
Technical drawings
Downloads
Datasheet1
Certificates3
FAQ
What are the input and output ratings of the Mean Well DCW05B-12?
The DCW05B-12 is a 5.5W DC-DC converter with an 18 to 36V DC input range. Its output is ±12V DC, with a current range of ±46mA to ±230mA. This makes it suitable for applications that need dual-output DC power from an 18 to 36V DC supply.
What protection features does the DCW05B-12 include?
This model includes short circuit protection and overload protection, which trips at 150% to 250% of rated output load. In both cases the output voltage shuts down, and the input must be re-powered to recover. These protections help support reliable operation in demanding electronic systems.
Is the DCW05B-12 designed for industrial or noise-sensitive applications?
Yes, this converter includes a built-in EMI filter and lists EMC compliance to EN55032 Class B, EN61000-4-2,3,4,5,6,8 (light industry level), and FCC Part 15 Class B. It also uses a five-sided shield metal case. Those features make it a practical option where compact isolated DC conversion and controlled EMI performance are important.
Can the Mean Well DCW05B-12 be used in harsh temperature environments?
The specified operating temperature range is -40°C to +71°C, subject to the output derating curve. Its storage temperature range is -40°C to +105°C. That allows it to fit many industrial and enclosed equipment environments where wide temperature tolerance is required.
Does the DCW05B-12 provide isolation between input and output?
Yes, the standard input-to-output withstand voltage is 1000V DC (1KVDC). The specification also lists 100MΩ isolation resistance at 500V DC and 80pF maximum isolation capacitance. This isolation can be useful in systems that need separation between power domains.
How accurate and efficient is the DCW05B-12?
The voltage accuracy is specified at ±2%. Line regulation and load regulation are each rated at ±0.5%, with load regulation measured from 20% to 100% rated load. Typical efficiency is 82%, which is solid for a compact 5.5W isolated DC-DC converter.
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Other DCW05 Models
8 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well DCW05C-15 DC-DC Converter - 5W - 36~72V in ±15V out | 5W | 15V | 0.19A | — | View |
| Mean Well DCW05C-12 DC-DC Converter - 5W - 36~72V in ±12V out | 5W | 12V | 0.23A | — | View |
| Mean Well DCW05C-05 DC-DC Converter - 5W - 36~72V in ±5V out | 5W | 5V | 0.5A | — | View |
| Mean Well DCW05B-15 DC-DC Converter - 5W - 18~36V in ±15V out | 5W | 15V | 0.19A | — | View |
| Mean Well DCW05B-05 DC-DC Converter - 5W - 18~36V in ±5V out | 5W | 5V | 0.5A | — | View |
| Mean Well DCW05A-15 DC-DC Converter - 5W - 9~18V in ±15V out | 5W | 15V | 0.19A | — | View |
| Mean Well DCW05A-12 DC-DC Converter - 5W - 9~18V in ±12V out 230mA | 5.5W | 12V | 230 Milliampere | IP20 | View |
| Mean Well DCW05A-05 DC-DC Converter - 5W - 9~18V in ±5V out | 5W | 5V | 0.5A | — | View |
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