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Mean Well MSP-450-3.3 Power Supply 297W 3.3V 90A
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Mean Well MSP-450-3.3 Power Supply 297W 3.3V 90A
Overview
MSP-450-3.3 is the 3.3V output model of this series: rated current 90A, rated power 297W, typical efficiency 80%.
Features
- Universal AC input / Full range
- Built-in active PFC function, PF>0.95
- High efficiency up to 89.5%
- Withstand 300VAC surge input for 5 seconds
- Protections: Short circuit / Overload / Over voltage / Over temperature
- Built-in constant current limiting circuit
- Medical safety approved (MOOP level)
- Built-in cooling Fan ON-OFF control
- Built-in DC OK signal
- Built-in remote ON-OFF control
- Stand by 5V@0.3A
- Built-in remote sense function
- No load power consumption<0.6W (Note.6)
- 5 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 3.3V
- RATED CURRENT
- 90A
- CURRENT RANGE
- 0 ~ 90A
- RATED POWER
- 297W
- RIPPLE & NOISE (max.)Note.2
- 80mVp-p
- VOLTAGE ADJ. RANGE
- 2.8 ~ 3.8V
- VOLTAGE TOLERANCENote.3
- ±2.0%
- LINE REGULATION
- ±0.5%
- LOAD REGULATION
- ±1.0%
- SETUP, RISE TIME
- 1000ms, 100ms/230VAC 2500ms, 100ms/115VAC at full load
- HOLD UP TIME (Typ.)
- 16ms/230VAC 16ms/115VAC at full load
INPUT
- VOLTAGE RANGENote.4
- 85 ~ 264VAC 120 ~ 370VDC
- FREQUENCY RANGE
- 47 ~ 63Hz
- POWER FACTOR (Typ.)
- PF>0.95/230VAC PF>0.99/115VAC at full load
- EFFICIENCY (Typ.)
- 80%
- AC CURRENT (Typ.)
- 5A/115VAC 2.4A/230VAC
- INRUSH CURRENT (Typ.)
- 35A/115VAC 70A/230VAC
- LEAKAGE CURRENT
- Earth leakage current < 300μA/264VAC , Touch leakage current < 100μA/264VAC
PROTECTION
- OVERLOAD
- 105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
- OVER VOLTAGE
- 3.96 ~ 4.62V Protection type : Shut down o/p voltage, re-power on to recover
- OVER TEMPERATURE
- Shut down o/p voltage, recovers automatically after temperature goes down
FUNCTION
- 5V STANDBY
- 5VSB : 5V@0.3A ; tolerance±5%, ripple : 50mVp-p(max.)
- DC OK SIGNAL
- PSU turn on : 3.3 ~ 5.6V ; PSU turn off : 0 ~ 1V
- REMOTE CONTROL
- RC+ / RC-: 4 ~ 10V or open = power on ; 0 ~ 0.8V or short = power off
- FAN CONTROL (Typ.)
- Load 20±10% or RTH2≧50℃ Fan on
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +70℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH non-condensing
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- IEC 60601-1:2005+A1+A2, ANSI/AAMI ES60601-1:2005+A2, CAN/CSA C22.2 No. 60601-1:2014+A2 EAC TP TC 004 approved;Design refer to BS EN/EN60335-1, BS EN/EN 62368-1(by request)
- ISOLATION LEVEL
- Primary-Secondary: 2×MOOP, Primary-Earth: 1×MOOP, Secondary-Earth: 1×MOOP
- WITHSTAND VOLTAGE
- I/P-O/P:4KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/EN55011 (CISPR11) Class B, BS EN/ EN61000-3-2,-3, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/ EN61000-4-2,3,4,5,6,8,11, BS EN/ EN60601-1-2 , EAC TP TC 020
OTHERS
- MTBF
- 159.3K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 218*105*41mm (L*W*H)
- PACKING
- 1.19Kg; 12pcs/15.3Kg/0.81CUFT
Test conditions and notes9
- 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 0.1μF & 47μF parallel capacitor.
- 3. Tolerance : includes set up tolerance, line regulation and load regulation.
- 4. Derating may be needed under low input voltages. Please check the derating curve for more details.
- 5. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
- 6. No load power consumption<0.5W when RC- & RC+ (CN100 pin1,2) 0 ~ 0.8V or short.
- 7. When the input voltage is less than 40VAC, the SPS may exhibit degradation of performance. The final product manufacturers must re-confirm this deviation that does not affect basic safety or essential performance.
- 8. 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 https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
- 9. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
Technical drawings
Downloads
Datasheet1
Certificates3
Test reports1
Catalogues1
FAQ
Can I use the MSP-450-3.3 for a high-current 3.3V industrial control backplane?
Yes, this model is a constant voltage power supply rated for 3.3V output with up to 90A and 297W. That makes it suitable for 3.3V industrial control electronics that need very high current on a single DC rail.
Is the MSP-450-3.3 a fit for powering 3.3V embedded processors or FPGA systems in test equipment?
It can be a fit where the equipment is designed for a 3.3V constant voltage source and needs substantial current headroom, since the unit provides 3.3V at up to 90A. The wide 85-264VAC input also suits facilities that may have different AC supply standards.
Can this 3.3V power supply be used for low-voltage automation electronics with heavy current demand?
Yes, the MSP-450-3.3 is intended for constant voltage output at 3.3V and can deliver up to 297W. That profile fits low-voltage automation electronics, controller assemblies, or embedded platforms that run on 3.3V and draw high current.
Would the MSP-450-3.3 work for a rack-based electronics bench or burn-in fixture?
It is suited to bench or rack environments where a regulated 3.3V rail is required, especially when loads can approach 90A. Its compact 218.0 × 105.0 × 41.0 mm form factor and 1.19 kg weight can help in dense equipment layouts.
Is the MSP-450-3.3 suitable for outdoor or harsh-environment use?
The provided specs show an operating temperature range of -40°C to +70°C, with output derating at higher ambient temperatures per the derating curve. No IP rating is listed, so the specs do not identify it as an outdoor or washdown power supply.
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