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. 644-7196
Mfr. Part No.RPT-60A
BrandMean Well
TWD606.00
Each
units
±12 V dc, ±5 V dc - 2 A, 4 A, 500 mA 46.5W 3 90 → 264 V ac, 127 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 29mm 150g - +65°C
RS Stock No. 413-667
Mfr. Part No.RS-15-12
BrandMean Well
TWD265.00
Each
units
12 V dc - 1.3A 15.6W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 62.5mm 51mm 28mm 130g 81% +70°C
RS Stock No. 712-7200
Mfr. Part No.LFWLT150-1003
BrandEOS
TWD4,879.00
Each
units
24 V dc - 6.25A 150W 1 90 → 264 V ac, 120 → 390 V dc Chassis Mount Open Frame 101.6mm 50.8mm 33.64mm 150g 86% +70°C
RS Stock No. 621-0578
Mfr. Part No.RS-25-12
BrandMean Well
TWD323.00
Each
units
12 V dc - 2.1A 25W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 78mm 51mm 28mm 200g 81.5% +70°C
RS Stock No. 424-421
Mfr. Part No.NFM-15-5
BrandMean Well
TWD579.00
Each
units
5 V dc - 3A 15W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 70mm 48mm 22mm 65g - +70°C
RS Stock No. 770-3973
Mfr. Part No.RPS-300-27RS
BrandMean Well
TWD2,043.00
Each
units
27 V dc - 7.4 A, 11.12 A 200W 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Open Frame 127mm 76.2mm 35mm 370g - +70°C
RS Stock No. 644-7067
Mfr. Part No.RD-50A
BrandMean Well
TWD621.00
Each
units
5 V dc, 12 V dc - 2 A, 6 A 54W 2 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 99mm 97mm 36mm 410g 79% +70°C
RS Stock No. 414-020
Mfr. Part No.SP-150-24
BrandMean Well
TWD2,314.00
Each
units
24 V dc - 6.3A 151W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 199mm 99mm 50mm 760g 83% +60°C
RS Stock No. 418-2112
Mfr. Part No.TML 30212
BrandTRACOPOWER
TWD4,484.00
Each
units
±12 V dc - 1.3A 30W 2 85 → 264 V ac, 100 → 370 V dc PCB Mount Encapsulated 88.9mm 63.5mm 25mm 230g 72 → 80% +60°C
RS Stock No. 644-7102
Mfr. Part No.RD-65A
BrandMean Well
TWD733.00
Each
units
5 V dc, 12 V dc - 3 A, 6 A 66W 2 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 129mm 98mm 38mm 440g 79% +70°C
RS Stock No. 621-0613
Mfr. Part No.RS-50-24
BrandMean Well
TWD524.00
Each
units
24 V dc - 2.2A 52.8W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 99mm 97mm 36mm 410g 88% +70°C
RS Stock No. 644-8341
Mfr. Part No.RSP-1500-12
BrandMean Well
TWD12,689.00
Each
units
12 V dc - 125A 1.5kW 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Enclosed 278mm 127mm 83.5mm 3kg 87% +70°C
RS Stock No. 603-1094
Mfr. Part No.PBA600F-24
BrandCosel
TWD15,207.00
Each
units
24 V dc - 27A 648W 1 85 → 264 V ac, 120 → 350 V dc Chassis Mount Open Frame 221mm 120mm 61mm 1.6kg 84% +71°C
RS Stock No. 414-030
Mfr. Part No.QP-200F
BrandMean Well
TWD3,860.00
Each
units
±15 V dc, ±24 V dc, 5 V dc - 3 A, 15 A, 700 mA 202.5W 4 90 → 264 V ac, 127 → 370 V dc Chassis Mount Enclosed 215mm 115mm 50mm 1.2kg 75% +60°C
RS Stock No. 627-3850
Mfr. Part No.XG7
BrandExcelsys
TWD3,989.00
Each
units
28 V dc - 5A 120W 1 85 → 264 V ac, 120 → 380 V dc PCB Mount Enclosed 269.75mm 127mm 40.4mm 100g 90% +70°C
RS Stock No. 678-3827
Mfr. Part No.SP-320-5
BrandMean Well
TWD2,887.00
Each
units
5 V dc - 55A 275W 1 88 → 264 V ac, 124 → 370 V dc Chassis Mount Enclosed 215mm 115mm 50mm 1.1kg 79% +65°C
RS Stock No. 418-2285
Mfr. Part No.TXL 060-0522TI
BrandTRACOPOWER
TWD2,727.00
Each
units
±12 V dc, 5 V dc - 1 A, 3.5 A, 7 A 60W 3 85 → 264 V ac, 120 → 375 V dc Chassis Mount Enclosed 169mm 95mm 38mm 700g 70 → 84% +70°C
RS Stock No. 122-7067
Mfr. Part No.ECM40US12
BrandXP Power
TWD1,253.00
Each
units
12 V dc - 3.5A 40W 1 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 27mm 150g - +70°C
RS Stock No. 151-379
Mfr. Part No.RSP-1000-12
BrandMean Well
TWD8,124.00
Each
units
12 V dc - 60A 720W 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Enclosed 295mm 127mm 41mm 2kg 83% +60°C
RS Stock No. 192-1245
Mfr. Part No.LPQ252-C
TWD11,493.00
Each
units
±12 V dc, 5 V dc - 6 A, 10 A, 35 A 250W 4 85 → 264 V ac, 120 → 300 V dc Chassis Mount Enclosed 262mm 127mm 76.2mm 1.4kg 75% +50°C