Embedded Switch Mode Power Supplies (SMPS)

A switch mode power supply is a type of electronic circuit used to convert power. They are also known as switching-mode power supplies or SMPS for short. The typical topology of an SMPS is AC to DC conversion, although users may find other switches that feature an output of DC to DC voltage.



How do SMPS work?


For the power supply to transform its input voltage into an output voltage, the switch will turn on and off with high frequency. The inductors or capacitors within the device will then regulate the power to the device. This continuous switching of the capacitor maintains the voltage at the desired level and provides excellent efficiency.



How do SMPS convert AC to DC?


In the case of AC mains usage, the input voltage will be filtered the same way with a capacitor or inductor to regulate the power and give you the DC output.



Which SMPS is best for a desktop PC?


The power supply unit you use in your PC is important as it ultimately determines what other components you can use within it and the output in performance you get at the end. For high-end gaming PC builds you should aim for an efficiency rating of >80%. The higher the rating, the less electricity it consumes. The less electricity used means easier heat dissipation which keeps the PC cool and performing optimally.


Switching power supply units with higher efficiency and lower levels of heat dissipation are typically compact in nature, making them ideal for projects with limited space.



Where are SMPS used?



  • PC/Laptops


  • Mobile phone chargers


  • Security systems such as CCTV Cameras


  • Machine tool industries


...
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Description Price Output Voltage Series Output Current Power Rating Number of Outputs Input Voltage Mounting Type Package Type Length Width Depth Weight Efficiency Maximum Temperature
RS Stock No. 144-4368
Mfr. Part No.PCA600F-5
BrandCosel
MYR2,325.86
Each
units
5 V dc - 120A 600W 1 85 → 264V ac Chassis Mount Enclosed 152mm 89mm 41mm 840g - +70°C
RS Stock No. 187-5563
Mfr. Part No.RPS-500-48-SF
BrandMean Well
MYR654.69
Each
units
48 V dc RPS-500 10.4A 499.2W 1 80 → 264 V ac, 113 → 370 V dc PCB Mount Enclosed 160mm 86mm 43mm 640g 94% +70°C
RS Stock No. 174-8030
Mfr. Part No.MFM-10-15
BrandMean Well
MYR40.30
Each
units
15 V dc - 670mA 10W 1 80 → 264V ac PCB Mount - 42mm 22.3mm 16mm 18g - +85°C
RS Stock No. 405-0582
Mfr. Part No.LDA15F-5-SN
BrandCosel
MYR272.60
Each
units
5 V dc - 3A 15W 1 85 → 264 V ac, 110 → 370 V dc Chassis Mount Enclosed 145mm 57mm 32mm 95g 74% +60°C
RS Stock No. 771-0717
Mfr. Part No.LFWLT40-3001
BrandEOS
MYR274.66
Each
units
5.2 V dc, 23.8 V dc - 1 A, 6 A, 500 mA 40W 3 90 → 264V ac Chassis Mount Open Frame 101.6mm 50.8mm 30.48mm 150g 85% +70°C
New
RS Stock No. 210-4111
Mfr. Part No.ECH450PS36
BrandXP Power
MYR844.59
Each
units
36 V ECH450 6.9 A, 12.5 A 450W 1 264V ac - Open Frame - - - - - -
RS Stock No. 839-9771
Mfr. Part No.LCM300N -T-4
MYR906.94
Each
units
15 V dc - 20A 310W 1 90 → 264 V ac, 127 → 374 V dc Chassis Mount Enclosed 177.8mm 41mm 101.6mm 800g - +70°C
RS Stock No. 122-7098
Mfr. Part No.ECP225PS24-A
BrandXP Power
MYR768.37
Each
units
24 V dc - 9.38A 225W 1 80 → 264V ac Chassis Mount Open Frame 127mm 76.2mm 22.6mm 230g - +70°C
RS Stock No. 132-7423
Mfr. Part No.PBA1500T-5
BrandCosel
MYR6,513.68
Each
units
5 V dc - 300A 1.5kW 1 170 → 264V ac Rack Mount Enclosed 178mm 268mm 61mm 3.4kg 81% +71°C
RS Stock No. 813-9106
Mfr. Part No.RWS150B-5
BrandTDK-Lambda
MYR304.60
Each
units
5 V dc - 21A 105W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Enclosed 41mm 94mm 128mm 480g 77 %, 79 % +70°C
RS Stock No. 721-1636
Mfr. Part No.HRP-100-24RS
BrandMean Well
MYR332.35
Each
units
24 V dc - 4.5A 108W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 159mm 97mm 38mm 380g 88.5% +60°C
RS Stock No. 187-5562
Mfr. Part No.RPS-500-48-C
BrandMean Well
MYR536.83
Each
units
48 V dc RPS-500 6.5 A, 10.4 A 312 (Convection) W, 499.2 (25 CFM) W 1 80 → 264 V ac, 113 → 370 V dc PCB Mount Enclosed 130mm 86mm 43mm 540g 94% +70°C
RS Stock No. 136-8993
Mfr. Part No.RWS1500B-12
BrandTDK-Lambda
MYR2,412.02
Each
units
12 V dc - 125A 1.5kW 1 265 V ac, 340 V dc Chassis Mount, Panel Mount Enclosed 261mm 127mm 63mm 3kg 81 % @ 115 V ac, 85 % @ 230 V ac +60°C
RS Stock No. 131-921
Mfr. Part No.TMT 30212C
BrandTRACOPOWER
MYR493.66
Each
units
±12 V dc - 1.25A 30W 2 85 → 264 V ac, 85 → 370 V dc Chassis Mount Encapsulated 96mm 51mm 29.5mm 180g - +50°C
RS Stock No. 905-8733
Mfr. Part No.RAC04-3.3SC/277-E
BrandRecom
MYR96.12
Each
units
3.3 V dc - 1.2A 4W 1 80 → 305V ac PCB Mount Encapsulated 36.7mm 27.2mm 17.1mm 41g 72% +80°C
RS Stock No. 132-053
Mfr. Part No.TMT 30105C
BrandTRACOPOWER
MYR690.20
Each
units
5 V dc - 6A 30W 1 85 → 264 V ac, 85 → 370 V dc Chassis Mount Encapsulated 96mm 51mm 29.5mm 180g 83% +50°C
RS Stock No. 122-7134
Mfr. Part No.ECS25US24
BrandXP Power
MYR116.30
Each
units
24 V dc - 1.04A 25W 1 80 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 76.2mm 50.8mm 20.6mm 100g - +70°C
RS Stock No. 172-0768
Mfr. Part No.GCU500PS36-EF
BrandXP Power
MYR808.46
Each
units
36 V dc - 6.9 A, 13.9 A 500W 1 80 → 264V ac Chassis Mount U Bracket 209.4mm 83.8mm 41.8mm 748g 92% 70°C
RS Stock No. 172-0767
Mfr. Part No.GCU500PS36
BrandXP Power
MYR785.96
Each
units
36 V dc - 6.9 A, 13.9 A 500W 1 80 → 264V ac Chassis Mount U Bracket 165.1mm 83.8mm 39.4mm 612g 92% 70°C
RS Stock No. 329-443
Mfr. Part No.LDA10F-3
BrandCosel
MYR177.50
Each
units
3 V dc - 2A 6W 1 85 → 264 V ac, 110 → 370 V dc Chassis Mount Open Frame 105mm 50mm 18mm 75g 68% +60°C