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Mean Well

Mean Well MPT-45A Power Supply 45W 5V 12V -5V 3A

SKU MPT-45A
$49.81 USD
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Overview

MPT-45A is the model of this series: rated power 40.5W, typical efficiency 73%.

Features

  • Universal AC input / Full range
  • Low leakage current <250μA
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • Medical safety approved (2 x MOPP between primary to secondary)
  • 100% full load burn-in test
  • Fixed switching frequency at 45KHz
  • 3 years warranty

Specifications

MPT-45ASpecifications from the official datasheet (2022-02-28 edition)

OUTPUT

OUTPUT NUMBER
CH1 / CH2 / CH3
DC VOLTAGE CH1
5V
DC VOLTAGE CH2
12V
DC VOLTAGE CH3
-5V
RATED CURRENT CH1
3A
RATED CURRENT CH2
2A
RATED CURRENT CH3
0.3A
CURRENT RANGE CH1
0.4 ~ 5A
CURRENT RANGE CH2
0.2 ~ 2.5A
CURRENT RANGE CH3
0 ~ 0.5A
RATED POWER
40.5W
OUTPUT POWER (max.)
52W with 18CFM min. Forced air convection
RIPPLE & NOISE (max.) CH1Note.2
60mVp-p
RIPPLE & NOISE (max.) CH2Note.2
120mVp-p
RIPPLE & NOISE (max.) CH3Note.2
60mVp-p
VOLTAGE ADJ. RANGE
CH1:4.5 ~ 5.5V
VOLTAGE TOLERANCE CH1Note.3
±4.0%
VOLTAGE TOLERANCE CH2Note.3
±7.0%
VOLTAGE TOLERANCE CH3Note.3
±5.0%
LINE REGULATION CH1
±1.0%
LINE REGULATION CH2
±2.0%
LINE REGULATION CH3
±1.0%
LOAD REGULATION CH1
±3.0%
LOAD REGULATION CH2
±4.0%
LOAD REGULATION CH3
±1.0%
SETUP, RISE TIME
800ms, 20ms/230VAC 800ms, 20ms/115VAC at full load
HOLD UP TIME (Typ.)
80ms/230VAC 12ms/115VAC at full load

INPUT

VOLTAGE RANGE
90 ~ 264VAC 127 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY(Typ.)
73%
AC CURRENT (Typ.)
1.2A/115VAC 0.7A/230VAC
INRUSH CURRENT (Typ.)
COLD START 20A/115VAC 40A/230VAC
LEAKAGE CURRENTNote.7
Earth leakage current < 250μA/264VAC , Touch current < 60μA/264VAC

PROTECTION

OVERLOAD
53 ~ 75W rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
5.75 ~ 6.75VDC on CH1 Protection type : Hiccup mode, recovers automatically after fault condition is removed

ENVIRONMENT

WORKING TEMP.
-10 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-20 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.04%/℃ (0 ~ 50℃) on +5V output
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
ANSI/AAMI ES60601-1, TUV EN60601-1, IEC60601-1 approved
ISOLATION LEVEL
Primary-Secondary: 2xMOPP, Primary-Earth:1xMOPP
WITHSTAND VOLTAGE
I/P-O/P:4KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC 1min.
ISOLATION RESISTANCE
I/P-O/P, I/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to EN55011 (CISPR11) Class B, EN61000-3-2,-3
EMC IMMUNITY
Compliance to EN61000-4-2,3,4,5,6,8,11, EN60601-1-2, medical level

OTHERS

MTBF
2952.3K hrs min. Telcordia SR-332 (Bellcore) ; 402.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
127*76*28mm (L*W*H)
PACKING
0.21Kg; 72pcs/18Kg/1.28CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on http://www.meanwell.com)
  5. 5. Mounting holes M1 and M2 should be grounded for EMI purposes.
  6. 6. Heat Sink HS1,HS2 can not be shorted.
  7. 7. Touch current was measured from primary input to DC output.

Technical drawings

MPT-45A Mechanical Specification
Mechanical Specification
MPT-45A Block Diagram
Block Diagram

Downloads

FAQ

Can I use the MPT-45A for equipment that needs 5V, 12V, and -5V rails?

Yes, this model is intended for applications needing multiple DC rails, with product outputs listed as 5V, 12V, and -5V. Its main listed output is 5V at 3A, and total rated power is 40.5W.

Is the MPT-45A suitable for industrial control or embedded systems with mixed-voltage logic rails?

It can fit embedded or automation electronics that need a 5V main output plus 12V and -5V rails from one supply. The unit is specified for 40.5W total power, with the main 5V output rated at 3A.

Can this model be used in legacy electronics that require a negative rail?

Yes, the listed outputs include -5V in addition to 5V and 12V, which is relevant for some legacy or specialized control electronics. The supply remains a constant-voltage design with a 90-264VAC input range.

Is the MPT-45A designed for indoor use only?

The provided operating temperature range is -10°C to +60°C. No IP rating is listed in the product data, so outdoor or moisture-exposed use is not defined by these specs.

How does the MPT-45A compare with the other 45W MPT variants listed here?

In the listed 45 series siblings, MPT-45A is 40.5W with outputs shown as 5V, 12V, and -5V, MPT-45B is 42.6W with 5V, 12V, and -12V, and MPT-45C is 43.5W with 5V and 3A in the provided sibling data. The differences shown here are total rated power and the listed output rails.

Payment & Security

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Mean Well MPT-45A Power Supply 45W 5V 12V -5V
Mean Well

Mean Well MPT-45A Power Supply 45W 5V 12V -5V 3A

$49.81 USD

MPT-45A is the model of this series: rated power 40.5W, typical efficiency 73%.

Features

  • Universal AC input / Full range
  • Low leakage current <250μA
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • Medical safety approved (2 x MOPP between primary to secondary)
  • 100% full load burn-in test
  • Fixed switching frequency at 45KHz
  • 3 years warranty
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