MEAN WELL ADD-155A is a dual-output power supply with battery charger with 13.8 V / 5 V / 13.3 V channels and a total rated output of 152.75 W. The main load, 5 V auxiliary load and battery-charging channel share the unit’s power budget. Apply the specified cooling and load limits.
Product Datasheet
Download MEAN WELL ADD-155 Datasheet (PDF)
The ADD-155 section is on PDF pages 25, 26. Refer to the complete mechanical drawings and notes when planning installation.
Model and Output Architecture
Complete order code
ADD-155A
Series
ADD-155
Output arrangement
Dual-Output Power Supply with Battery Charger
Input selection
Universal AC input; no manual range-selection switch
CH1 supplies the main DC load, CH2 supplies a separate 5 V load, and CH3 is the battery-charging channel. An external battery can provide the catalogue UPS function.
Use the complete order code to select the voltage combination. The channel numbers identify circuits within one power supply, not separate products.
Electrical Output Ratings
Total rated output power
152.75 W
CH1 voltage adjustment
12–14.5 V
CH1 function
Main regulated output
CH1 output voltage
13.8 V
CH1 rated current
9.5 A
CH1 current range
0–10.5 A
CH1 ripple and noise maximum
150 mVp-p
CH1 voltage tolerance
±2%
CH1 line regulation
±1%
CH1 load regulation
±1%
CH2 function
5 V auxiliary output
CH2 output voltage
5 V
CH2 rated current
3 A
CH2 current range
0–3 A
CH2 ripple and noise maximum
100 mVp-p
CH2 voltage tolerance
±3%
CH2 line regulation
±0.5%
CH2 load regulation
±2%
CH3 function
Battery-charging output
CH3 output voltage
13.3 V
CH3 rated current
0.5 A
The total rated power is shared by all listed channels. Observe the total-power, individual-current, adjustment and cooling limits together; the maximum values of different current ranges are not a simultaneous-output guarantee.
CH1 adjustment does not establish an independently adjustable voltage range for the other channels. Check the connected load and, where used, the battery charging requirements before adjustment.
Voltage tolerance includes setting tolerance, line regulation and load regulation. Ripple/noise is measured at 20 MHz bandwidth using a 12-inch twisted-pair lead terminated with 0.1 µF and 47 µF capacitors in parallel.
Unlisted battery-channel ripple, regulation or current-range values are not specified as zero.
Input and Timing
AC input voltage
88–264 VAC
DC input voltage
124–370 VDC
AC input frequency
47–63 Hz
Typical efficiency
78%
Typical AC input current
2.5 A at 115 VAC; 1.5 A at 230 VAC
Typical cold-start inrush current
23 A at 115 VAC; 45 A at 230 VAC
Leakage current
<1 mA at 240 VAC
Set-up / rise time
1000 / 90 ms at 230 VAC; 2000 / 90 ms at 115 VAC, full load
Typical hold-up time
24 ms at 230 VAC; 20 ms at 115 VAC, full load
Switching frequency
PFC 67 kHz; PWM 134 kHz
Typical power factor
>0.92 at full load
Unless otherwise stated, catalogue parameters are measured at 230 VAC input, rated load and 25°C ambient. Timing values retain their stated input and load conditions.
Active PFC is built in. Connect the protective-earth terminal marked FG as shown in the wiring drawing.
Protection and Battery Operation
Short-circuit protection
Provided
Main-output overload threshold
105–135% of rated output power
Overload recovery
AC charging mode: constant-current limiting with automatic recovery after fault removal; UPS mode: internal-fuse protection
CH1 over-voltage threshold
15.87–18.63 V
Over-voltage recovery
Output shutdown; reapply power to recover
Battery-low protection
10 V ±0.8 V
Battery-polarity protection
Provided
CH3 overload threshold
0.51–0.9 A
The over-voltage threshold is specified for CH1. It is not a separately guaranteed over-voltage threshold for every auxiliary or charging channel.
AC charging and battery-backup operation have different overload protection mechanisms. An internal-fuse response is not an automatic electronic restart. Check battery polarity and the battery manufacturer’s charging requirements before connection.
Terminal Assignments and Mating Parts
Terminal 1
AC/L
Terminal 2
AC/N
Terminal 3
FG
Terminal 4
+5V
Terminal 5
BAT. +
Terminal 6
BAT.−/COM
Terminal 7
DC OUTPUT COM
Terminal 8
DC OUTPUT +V
CN1 function, pins 1 and 2
RESET SW
CN1 board connector
JST B2B-XH or equivalent
CN1 mating housing series
JST XHP or equivalent
CN1 contact
JST SXH-001T-P0.6 or equivalent
Use the numbered terminal view for this exact series. NC means no connection. DC COM is the output return; FG is protective earth. Do not interchange them.
Connect the external battery only to BAT.+ and BAT.−/COM. The battery return and output common are identified in the terminal and block diagrams. Select wiring and battery protection for the actual installation.
CN1 is the reset-switch connection. Select a mating XHP housing for the illustrated two-position connector and the specified contact. Confirm reset-switch operation for the supplied unit before using the interface.
Environment, Cooling and Derating
Working ambient temperature
−10 to +60°C, subject to the applicable cooling curve
Working humidity
20–90% RH, non-condensing
Storage temperature
−20 to +85°C
Storage humidity
10–95% RH
Temperature coefficient
±0.03%/°C from 0 to 50°C on the +5 V output
Vibration
10–500 Hz, 2G; 10 minutes/cycle, 60 minutes each along X, Y and Z
For horizontal mounting without a fan, the curve permits 70% load from −10 to 50°C, decreasing to 50% at 60°C. With at least 21.6 CFM external airflow arranged 10 cm from the unit as shown, it permits 100% from −10 to 50°C and 80% at 60°C.
Natural-convection operation does not mean unrestricted full rated power. Provide the specified external airflow when using the forced-air curve, and keep the ventilation path clear.
Above 2000 m altitude, apply an additional ambient-temperature derating of 3.5°C per 1000 m for fanless models or 5°C per 1000 m for fan models, as specified in the catalogue installation note.
The model-specific input derating plot at 60 Hz shows 80% load at 88 VAC, rising to 100% at 100 VAC and remaining at 100% through 264 VAC. Apply input and temperature limits together.
Safety, EMC and Reliability
Safety standards
UL 62368-1; TÜV BS EN/EN 62368-1; EAC TP TC 004 approved
Input-to-output withstand voltage
3 kVAC
Input-to-FG withstand voltage
2 kVAC
Output-to-FG withstand voltage
0.5 kVAC
Isolation resistance
100 MΩ between I/P–O/P, I/P–FG and O/P–FG at 500 VDC, 25°C, 70% RH
EMC emission
BS EN/EN 55032 (CISPR 32), Class B; BS EN/EN 61000-3-2 and -3; EAC TP TC 020
EMC immunity
BS EN/EN 61000-4-2, -3, -4, -5, -6, -8, -11; BS EN/EN 55035, light-industry level; EAC TP TC 020
MTBF, Telcordia SR-332
1744.5K hours minimum
MTBF, MIL-HDBK-217F
221.9K hours minimum at 25°C
This power supply is a component for installation in final equipment. The catalogue EMC tests use a 360 × 360 mm metal plate, 1 mm thick. Verify EMC compliance again in the completed equipment.
The catalogue lists 100% full-load burn-in testing and a two-year warranty. MTBF is a reliability calculation, not a guaranteed operating lifetime.
Mechanical Installation and Related Equipment
Catalogue dimensions
199 × 110 × 50 mm (L × W × H)
Case reference
906
Drawing dimensional tolerance
±1 mm
Catalogue unit-weight reference
1000 g
Catalogue packing
1 kg; 16 pcs / 16 kg / 0.95 CUFT
The mechanical drawing marks 192 mm and 172 mm longitudinal references, a 97 mm vertical reference, 5-M3 bottom holes, 3-M3 side holes and Ø3.5 mm holes. Use the exact drawing positions and keep clearance around the terminal block.
The unit weight is the catalogue PACKING reference per unit, not a measured net or shipping weight. Carton quantities and carton weight are separate packing references.
Select external wiring, ventilation and installation hardware to suit the actual load and enclosure. The cooling fan illustrated in the airflow setup is external; the drawing does not establish an included fan or a separate fan order code.
The specified JST board connector, mating housing series and contact are connection references. Confirm the complete mating housing and wire assembly before ordering installation parts.
An external battery is required for backup operation. Choose it for the stated charging voltage and current and the required backup duration; the catalogue does not prescribe a complete battery order code or guarantee a backup time.
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