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Mean Well MPT-45A Power Supply 45W 5V 12V -5V 3A
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
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. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
- 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. Tolerance : includes set up tolerance, line regulation and load regulation.
- 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. Mounting holes M1 and M2 should be grounded for EMI purposes.
- 6. Heat Sink HS1,HS2 can not be shorted.
- 7. Touch current was measured from primary input to DC output.
Technical drawings
Downloads
Catalogues1
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.
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Other MPT Series Models
5 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well MPT-65C Power Supply 65W 5V 15V -15V 5.5A | 65W | 5V | 5.5A | IP20 | $49.52 | View |
| Mean Well MPT-65B Power Supply 65W 5V 12V -12V 5.5A | 63.5W | 5V | 5.5A | IP20 | $49.52 | View |
| Mean Well MPT-65A Power Supply 65W 5V 12V -5V 5.5A | 60W | 5V | 5.5A | IP20 | $49.52 | View |
| Mean Well MPT-45C Power Supply 45W 5V 15V -15V 3A | 43.5W | 5V | 3A | IP20 | $34.24 | View |
| Mean Well MPT-45B Power Supply 45W 5V 12V -12V 3A | 42.6W | 5V | 3A | IP20 | $44.83 | View |
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