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Mean Well DCW12A-05 DC-DC Converter - 12W - 9~18V in ±5V out 1.2A
Overview
DCW12A-05 is the ±5V output model of this series: rated power 12W, typical efficiency 80%.
Features
- 2:1 wide input range
- 1500VDC I/O isolation
- Built-in remote ON/OFF control
- Built-in EMI filter
- Protections: Short circuit / Overload
- Cooling by free air convection
- Five-sided shield metal case
- 100% full load burn-in test
- Low cost / High reliability
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- ±5V
- CURRENT RANGE
- ±240 ~ ±1200mA
- RATED POWER
- 12W
- RIPPLE & NOISE (max.)Note.2
- 50mVp-p
- LINE REGULATIONNote.3
- ±0.5%
- LOAD REGULATIONNote.4
- ±0.5%
- VOLTAGE ACCURACY
- ±2.0%
- SWITCHING FREQUENCY
- 400KHz min.
- EXTERNAL CAPACITANCE LOAD (max.)
- 670uF
INPUT
- VOLTAGE RANGE
- 9 ~ 18VDC
- EFFICIENCY (Typ.)
- 80%
- DC CURRENT Full load
- 1245mA
- DC CURRENT No load
- 70mA
- FILTER
- Pi network
- PROTECTION
- Fuse recommended
PROTECTION
- OVERLOADNote.5
- 110 ~ 180% rated output load Protection type : Hiccup mode, recovers automatically after fault condition is removed
- SHORT CIRCUIT
- All output equipped with over current protection 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
- ±0.05% / ℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- EAC TP TC 020/2011 approved
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVDC
- ISOLATION RESISTANCE
- I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
- ISOLATION CAPACITANCE
- 2200pF max.
- EMC EMISSION
- Compliance to BS EN/EN55032 Class A, FCC part 15 Class A , EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,5,6,8, light industry level, criteria A , EAC TP TC 020
OTHERS
- REMOTE CONTROL
- Power ON: R.C. ~ -Vin > 4VDC or open ; Power OFF: R.C. ~ -Vin < 1VDC or short
- MTBF
- 600Khrs 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
- 17.5g ; 15 pcs/per tube, 750 pcs/ 50 tube/per carton
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.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.
Technical drawings
Downloads
FAQ
What type of output does the Mean Well DCW12A-05 provide?
The DCW12A-05 is a 12W DC-DC converter with a dual output of ±5V. It is designed for applications that need both positive and negative 5V rails from a 9 to 18V DC input range.
What input voltage range does the DCW12A-05 support?
This model accepts 9 to 18V DC input, which is a 2:1 wide input range. That makes it suitable for systems where the input source can vary within that window but a regulated ±5V output is still required.
Is the DCW12A-05 a good fit for space-constrained equipment?
Yes. The converter has a compact metal case measuring 31.8 x 20.3 x 12.2 mm, which helps when board space is limited. Its five-sided shield metal case also supports use in compact industrial or embedded designs where durability matters.
What protection features are included in the DCW12A-05?
The DCW12A-05 includes short circuit and overload protection. Its overload protection is rated at 110% to 180% with auto-recovery, and short circuit protection uses hiccup mode that recovers automatically after the fault is removed.
Can the DCW12A-05 be used in demanding temperature conditions?
This model is rated for operation from -40°C to +71°C when used within its derating limits. It is also specified for storage from -40°C to +105°C, which makes it suitable for harsh equipment environments.
Does the DCW12A-05 provide isolation between input and output?
Yes. The converter provides 1500VDC input-to-output isolation, with isolation resistance specified at 100M Ohms under the stated test conditions. This is useful in applications where electrical isolation is required between the source side and the load side.
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