MEAN WELL QP-150-3B is a quad-output AC/DC power supply with CH1 5 V, CH2 3.3 V, CH3 12 V, CH4 -12 V and a maximum rated combined output of 150.2 W. Active PFC, full-range input and a built-in DC fan support multi-rail equipment. Select loads using all four channel-current ranges and the combined power limit; over-temperature protection is an option, not an assumed standard feature.
Product Datasheet
Download MEAN WELL QP-150 Datasheet (PDF)
The QP-150 section is on PDF pages 1, 4, 5. Refer to the complete mechanical drawings and notes when planning installation.
Model Code and Output Configuration
Complete model
QP-150-3B
Series and output combination
QP-150 is the quad-output power-supply family. The complete suffix identifies the catalogue output combination shown below; retain the full SKU when ordering.
Four-output configuration
CH1 5 V, CH2 3.3 V, CH3 12 V, CH4 -12 V
Maximum rated total output power
150.2 W for all channels together. The series designation is not an unconditional 150 W rating for every model.
Each channel has its own rated current and permitted current range. Keep every channel within its stated minimum/maximum range and the combined output within the total-power rating and derating limits. The individual maximum currents are not an allowance to load every channel to its maximum simultaneously.
Four-Channel Electrical Specifications
CH1 voltage and current
5 V DC; rated current 10 A; permitted current range 3 to 15 A.
CH1 ripple and regulation
Ripple/noise 100 mVp-p maximum; voltage tolerance ±3.0%; line regulation ±1.0%; load regulation ±2.0%.
CH2 voltage and current
3.3 V DC; rated current 10 A; permitted current range 0 to 15 A.
CH2 ripple and regulation
Ripple/noise 100 mVp-p maximum; voltage tolerance ±3.0%; line regulation ±1.0%; load regulation ±2.0%.
CH3 voltage and current
12 V DC; rated current 5 A; permitted current range 0.4 to 5 A.
CH3 ripple and regulation
Ripple/noise 150 mVp-p maximum; voltage tolerance ±6.0%; line regulation ±2.0%; load regulation ±6.0%.
CH4 voltage and current
-12 V DC; rated current 0.6 A; permitted current range 0 to 1 A.
CH4 ripple and regulation
Ripple/noise 150 mVp-p maximum; voltage tolerance ±5.0%; line regulation ±1.0%; load regulation ±2.0%.
Output voltage adjustment
CH1: 4.75 to 5.5 V; CH2: 3.14 to 3.63 V.
Typical efficiency
75% at the catalogue reference test conditions.
Unless otherwise specified, parameters are measured at 230 VAC input, rated load and 25°C ambient. Voltage tolerance includes setup tolerance, line regulation and load regulation. Ripple/noise is measured at 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 uF and 47 uF capacitors.
Negative output voltages retain their listed polarity relative to COM; the current figures are load-current magnitudes. Apply the actual channel loading requirements together rather than treating the four outputs as four independent supplies.
The catalogue lists selectable positive/negative polarity for CH4. The output table above preserves the published negative-polarity combination for this complete model. The pages do not define a separate ordering suffix or a field-conversion procedure; confirm the required polarity configuration before ordering or changing it.
Input, PFC and Timing
Input range / frequency
90 to 264 VAC, universal full range; 127 to 370 VDC. AC frequency 47 to 63 Hz.
Power factor, typical
Built-in active PFC: PF >0.95 at 230 VAC; PF >0.98 at 115 VAC, full load.
AC current, typical
2.5 A at 115 VAC; 1.2 A at 230 VAC.
Inrush / leakage
Cold-start inrush ≤40 A at 230 VAC, typical; leakage <3.5 mA at 240 VAC.
Setup / rise time
800 ms setup, 50 ms rise at 230 VAC; 1800 ms setup, 50 ms rise at 115 VAC, full load.
Hold-up time, typical
24 ms at full load; both 230 VAC and 115 VAC entries are specified.
Switching frequency
Fixed 100 kHz as listed in the features and block diagram.
Protection and Optional Functions
Short circuit / overload
Short-circuit protection is listed. Overload detection: 105% to 150% of rated output power; hiccup mode, automatically recovering after the fault condition is removed.
Over-voltage thresholds
CH1: 5.75 to 6.75 V; CH2: 3.8 to 4.4 V. Output shuts down; re-power to recover.
Over-temperature protection
Optional: when fitted, output shuts down and automatically recovers after temperature decreases. The unqualified model number does not establish that this option is installed.
Overload thresholds describe protection behavior, not a continuous power rating. Only the channels and thresholds listed above are specified for over-voltage protection; do not infer a separate OVP threshold for every output. No remote-sense or power-good/power-fail signal interface is specified in this model section.
Cooling and Operating Limits
Cooling / temperature range
Forced-air cooling by a built-in DC fan; working ambient -10 to +60°C subject to the derating curve.
Horizontal-installation thermal curve
100% load from -10 to +50°C; derate to 80% at +60°C.
Input-voltage derating
At 60 Hz: 80% load at 90 VAC, rising to 100% at 100 VAC; 100% from 100 through 264 VAC, subject to other limits.
Altitude adjustment
Above 2000 m, the stated ambient-temperature derating for fan-cooled models is 5°C per additional 1000 m. No maximum operating altitude is established by this note.
Apply temperature and input-voltage derating together with the model total-power and channel-current limits. Keep the fan opening and the illustrated upward airflow path unobstructed; the +60°C working limit does not mean full rated load at that temperature.
Terminal Assignments and Installation
AC input and earth
Terminal 1: AC/L; terminal 2: AC/N; terminal 3: FG protective earth.
Output terminals
Terminal 4: V4 (CH4); terminal 5: V3 (CH3); terminals 6 and 7: V1 (CH1); terminals 8 and 9: output COM; terminal 10: V2 (CH2).
Output wiring
Connect each load to its specified output and COM with the polarity in the output table. The duplicate V1 and COM terminals are assignments for the same output/reference, not additional channels.
Adjustment and indication
The drawing identifies an LED and +V ADJ.1 / +V ADJ.2 controls; use only the adjustment ranges actually specified for this model.
Use the complete page 5 mechanical drawing for terminal orientation. The terminal functions do not include remote sense, communication or programmable control pins. The catalogue does not provide a specific mating-connector, harness or mounting-kit order code for this family; do not infer an included accessory kit from the drawing.
Dimensions, Mounting and Weight
Body dimensions / case
199 × 99 × 50 mm (L × W × H); case 916B; mechanical drawing tolerance ±1 mm.
Mounting-thread callouts
The main drawing marks 5-M3 L=6 mm and 2-M4; the side view marks 6-M4 L=6 mm. Use each indicated location and thread/depth callout; no mounting torque is specified in these pages.
Drawing reference dimensions
Main-face longitudinal references include 117 mm and 133 mm; side-view mounting references include 142 mm and 25 mm. The drawing shows 119 mm across the extended mounting footprint and 99 mm body width.
Terminal projection and spacing
Terminal projection 9 mm maximum. The terminal area carries 7.62 mm and 6.15 mm dimension callouts; follow the actual drawing locations rather than applying one common spacing to every terminal.
Single-unit weight reference
0.93 kg (930 g); catalogue packing: 20 pieces / 19.6 kg / 1.21 CUFT.
The stated weight is the explicit single-unit PACKING reference, not a measured bare net weight or the total shipment mass. Drawing hole counts are not supplied screw quantities; select mounting hardware to the actual threaded locations and insertion limits shown.
Environment, Safety and EMC
Humidity / storage
Operating humidity 20% to 90% RH; storage -20 to +85°C and 10% to 95% RH; non-condensing.
Temperature coefficient / vibration
±0.03%/°C over 0 to 50°C. Vibration: 10 to 500 Hz, 2G, 10 minutes per cycle, 60 minutes along each X, Y and Z axis.
Safety approvals
UL60950-1, TUV BS EN/EN62368-1 and EAC TP TC 004, as listed in this datasheet.
Dielectric strength / insulation
I/P-O/P: 3 kVAC; I/P-FG: 2 kVAC; O/P-FG: 0.5 kVAC. Insulation resistance: 100 MΩ at 500 VDC, 25°C and 70% RH across these pairs.
EMC emissions: BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2 and -3-3, and EAC TP TC 020. Immunity: BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN55035, light-industry level, and EAC TP TC 020. No unlisted immunity test level is inferred.
The supply is a component for installation in final equipment. EMC testing used a 360 × 360 mm metal plate, 1 mm thick; the completed equipment must be checked again for compliance.
Reliability and Warranty
MTBF, minimum
1763.3 thousand hours by Telcordia SR-332 (Bellcore); 262.6 thousand hours by MIL-HDBK-217F at 25°C.
Manufacturer warranty
Three years as stated in the datasheet, subject to the applicable manufacturer terms.
MTBF is a reliability calculation reference, not a guaranteed service-life duration.
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