MEAN WELL MPM-45-24 is a pcb mount medical AC/DC power supply with 24 V output, 1.88 A rated current and 45.1 W catalogue-rated output power. It uses Class II construction without FG and provides 2 MOPP primary-secondary isolation. BF applications require appropriate system consideration; apply the model-specific peak, thermal and input-voltage limits.
Product Datasheet
Download MEAN WELL MPM-45 Datasheet (PDF)
The MPM-45 section is on PDF pages 21, 22, 23, 24. Refer to the complete mechanical drawings and notes when planning installation.
Model Code and Selection
| Complete model |
MPM-45-24 |
| Series |
MPM-45 medical AC/DC power supply. |
| Output code |
24 V nominal DC output. |
| Mounting suffix |
Blank suffix: PCB mounting style. |
This version uses the specified mounting style and has the model-specific vibration rating stated below. Typical applications include portable medical devices, mobile clinical workstations, medical computer monitors and medical examination instruments.
DC Output and Peak Operation
| Nominal DC voltage |
24 V. |
| Rated current |
1.88 A. |
| Rated cooling condition |
Natural convection; no minimum load required. |
| Catalogue-rated output power |
45.1 W. |
| Peak current and power |
2.1 A and 50.4 W for up to 10 seconds; subject to the duty and average-power limits below. |
| Ripple and noise, maximum |
200 mVp-p. |
| Voltage tolerance |
±2.0%; includes setup tolerance, line regulation and load regulation. |
| Line / load regulation |
±0.5% / ±0.5%. |
Peak operation is limited to a maximum 33% duty cycle within every 30 seconds. Average output power must not exceed the rated power. The peak rating is not a continuous-output allowance; observe the specified current and power limits together.
Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted-pair wire terminated by 0.1 µF and 47 µF capacitors in parallel. Use the catalogue-rated power, current and voltage as separate selection limits.
Input and Timing
| Input voltage |
80–264 V AC or 113–370 V DC. |
| AC frequency |
47–63 Hz. |
| Efficiency, typical |
92.5% at the default specified test conditions. |
| AC current, typical |
1.2 A at 115 V AC; 0.6 A at 230 V AC. |
| Cold-start inrush, typical |
30 A at 115 V AC; 60 A at 230 V AC. |
| Setup / rise time |
1000 ms / 30 ms at both 230 V AC and 115 V AC, full load. |
| Hold-up time, typical |
50 ms at 230 V AC; 12 ms at 115 V AC, full load. |
| No-load consumption |
Less than 0.1 W. |
Protection and Medical Isolation
| Short circuit |
Short-circuit protection is listed. |
| Overload |
115–135% of rated output power; hiccup mode, automatic recovery after the fault is removed. |
| Overvoltage |
25.2–32.4 V; output shutdown, re-power to recover. |
| Overtemperature |
Output shutdown, re-power to recover. |
| Touch current |
Less than 100 µA at 264 V AC, measured from primary to DC output. |
| Primary-secondary isolation |
2 × MOPP. |
| Construction |
Class II, without FG. |
| Withstand voltage |
Input to output: 4 kV AC. |
| Isolation resistance |
Input to output: 100 MΩ at 500 V DC, 25°C and 70% RH. |
Suitable for BF applications only with appropriate system consideration. These component ratings do not certify an assembled medical device or permit ignoring the final equipment insulation and leakage-current requirements.
Cooling and Operating Limits
| Operating ambient |
−30 to +80°C; subject to the derating curve. |
| Temperature derating |
Horizontal mounting, this output-voltage version: 100% load from −30 to +60°C, then along the plotted segments to 75% at +70°C and 40% at +80°C. |
| Input-voltage derating |
The 60 Hz AC-input curve gives 80% load at 80 V AC, rising to 100% at 100 V AC and remaining at 100% to 264 V AC. |
| Working humidity |
20–90% RH, non-condensing. |
| Storage |
−40 to +85°C. |
| Temperature coefficient |
±0.03%/°C over 0–60°C. |
| Operating altitude |
Up to 4000 m / overvoltage category II. |
| Altitude derating |
For fanless operation above 2000 m (6500 ft), reduce permissible ambient temperature by 3.5°C per additional 1000 m. |
| Vibration |
2 G, 10–500 Hz, 10 minutes per cycle; 60 minutes along each X, Y and Z axis. |
Apply the temperature, input-voltage and altitude limits together. Maximum ambient temperature does not imply full rated output at that temperature. Peak operation must also stay within the average-power and duty-cycle limits.
Dimensions, Connections and Installation
| Dimensions (L × W × H) |
87 × 52 × 29.5 mm. |
| Case reference |
IRM60. |
| Drawing tolerance |
±1 mm. |
| PCB power pins |
Bottom view: AC/N above AC/L at the input side; −Vo above +Vo at the output side. The figure orientation matters. |
| Pin and layout dimensions |
AC/L and AC/N pins are Ø1 mm; +Vo and −Vo pins are Ø2 mm. Protrusion is 3.5 ±1 mm; the bottom view marks 76 mm between pin columns, 6.75 mm between input pins and 5.5 mm between output pins. |
| Soldering limits |
Wave soldering: 265°C for 5 seconds maximum. Manual soldering: 390°C for 3 seconds maximum. |
Use the mechanical drawing for this mounting version and the manufacturer installation instructions. PCB and screw-terminal styles have different dimensions, connection layouts and vibration ratings; they are not interchangeable mounting patterns.
The reviewed pages do not specify a separate accessory ordering code, mating connector, DIN-rail adaptor or included mounting kit for this model. Mounting hardware and connection details must be selected from the actual installation requirements; no unlisted tightening torque or screw depth is inferred.
Safety Approvals and EMC
| Medical safety standards |
IEC 60601-1:2005+A1; TUV BS EN/EN 60601-1:2006+A1+A12+A2; ANSI/AAMI ES60601-1:2005+A2; CAN/CSA C22.2 No. 60601-1:2014+A2; EAC TP TC 004 approved. |
| Additional design option |
Design reference to BS EN/EN60335-1 is by request; not a standard approval claim for this supplied model. |
| Emissions |
BS EN/EN55011 (CISPR11): Class B conducted and radiated; BS EN/EN61000-3-2: Class A harmonic current; BS EN/EN61000-3-3: voltage flicker. |
| Immunity |
BS EN/EN55035 and BS EN/EN60601-1-2. |
ESD, BS EN/EN61000-4-2: Level 4, 15 kV air and 8 kV contact. RF field, -4-3: Level 3, 10 V/m at 80 MHz–2.7 GHz; Table 9, 9–28 V/m at 385 MHz–5.78 GHz. EFT, -4-4: Level 3, 2 kV. Surge, -4-5: Level 3, 1 kV line-to-line. Conducted immunity, -4-6: Level 3, 10 V. Magnetic field, -4-8: Level 4, 30 A/m.
Voltage dips and interruptions, BS EN/EN61000-4-11: >95% dip for 0.5 periods; 30% dip for 25 periods; >95% interruption for 250 periods.
The power supply is a component to be installed in final equipment. Re-confirm final-equipment EMC compliance under the manufacturer component-EMI guidance; component results alone are not approval of the assembled equipment.
Weight, Reliability and Measurement Notes
| Catalogue unit-weight reference |
185 g, converted from the explicit 0.185 kg PACKING reference per unit. This is not a measured net weight or a shipment weight. |
| MTBF |
4590.4 K hours minimum, Telcordia SR-332 (Bellcore); 563.4 K hours minimum, MIL-HDBK-217F at 25°C. |
| Default test conditions |
230 V AC input, rated load and 25°C ambient unless otherwise specified. |
| Manufacturer warranty statement |
The catalogue lists three years; manufacturer terms apply. |
| Datasheet version |
MPM-45-SPEC, 2024-10-30; combined catalogue pages 21–24. |
MTBF is a statistical reliability estimate, not a guaranteed service life. The unit-weight reference is taken directly from the specification, not obtained by dividing the carton weight.
