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. 161-8298
BrandRS PRO
£16.99
Each
Units
15V dc - - 150W 1 170 → 264 V ac, 85 → 132 V ac Chassis Mount Enclosed 99mm 82mm 30mm 480g - +70°C
RS Stock No. 181-2121
BrandRS PRO
£6.99
Each
Units
12V dc - 1.25A 15W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm 60g 80% +70°C
RS Stock No. 181-2144
BrandRS PRO
£62.32
1 Tube of 13
Tube(s)
24V dc - 210mA 5W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 81% +70°C
RS Stock No. 161-8266
BrandRS PRO
£49.22
Each
Units
48V dc - 4.16A 199.6W 1 127 → 370 V dc, 90 → 264 V ac Chassis Mount Open Frame 128mm 76.5mm 37.1mm - 90% +70°C
RS Stock No. 161-8299
BrandRS PRO
£16.99
Each
Units
24V dc - 6.5A 156W 1 170 → 264 V ac, 85 → 132 V ac Chassis Mount Enclosed 159mm 97mm 30mm 480g 89% +70°C
RS Stock No. 181-2122
BrandRS PRO
£7.07
Each
Units
24V dc - 625mA 15W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm 60g 81% +70°C
RS Stock No. 161-8241
BrandRS PRO
£139.78
Each
Units
36V dc - 17.5A 630W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - 90% +70°C
RS Stock No. 181-2145
BrandRS PRO
£98.39
1 Tube of 19
Tube(s)
3V dc - 1.25A 4.1W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm 31g 70% +70°C
RS Stock No. 181-2130
BrandRS PRO
£9.74
Each
Units
24V dc - 1.1A 25W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 70mm 48mm 23.5mm 120g 85% +70°C
RS Stock No. 161-8267
BrandRS PRO
£47.48
Each
Units
13.8V dc - 10A 140W 2 195 → 253V ac Chassis Mount Enclosed 200mm 110mm 50mm 900g - +45°C
RS Stock No. 161-8284
BrandRS PRO
£12.78
Each
Units
5V dc - 14A 60W 1 100 → 240V ac Chassis Mount Enclosed 97mm 99mm 30mm 300g 84% +50°C
RS Stock No. 161-8256
BrandRS PRO
£36.54
Each
Units
5V dc - 20A 100W 1 90 → 264V ac Chassis Mount Open Frame 127mm 76mm 30.5mm - 82 %, 84 % +70°C
RS Stock No. 161-8232
BrandRS PRO
£127.02
Each
Units
24V dc - 22A 480W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm 8.7kg - +70°C
RS Stock No. 144-6268
BrandRS PRO
£23.31
Each
Units
24V dc - 625mA 15W 1 264 V ac, 370 V dc Chassis Mount Encapsulated 96.1mm 54mm 31mm 135g 84 % @ 230 +70°C
RS Stock No. 161-8300
BrandRS PRO
£16.99
Each
Units
36V dc - 4.3A 155W 1 170 → 264 V ac, 85 → 132 V ac Chassis Mount Enclosed 99mm 82mm 30mm 480g 89% +70°C
RS Stock No. 161-8272
BrandRS PRO
£10.16
Each
Units
5V dc - 7A 35W 1 - Chassis Mount Enclosed 99mm 82mm 30mm 230g 82% -
RS Stock No. 181-2126
BrandRS PRO
£8.34
Each
Units
24V dc - 833mA 20W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm 60g 83% +70°C
RS Stock No. 181-2123
BrandRS PRO
£8.17
Each
Units
3V dc - 3.6A 11.8W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 23.5mm 60g 74% +70°C
RS Stock No. 161-8242
BrandRS PRO
£139.78
Each
Units
48V dc - 13.6A 588W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - 90% +70°C
RS Stock No. 161-8245
BrandRS PRO
£158.65
Each
Units
48V dc - 14A 800W 1 90 → 264V ac Chassis Mount Enclosed 226mm 116.5mm 41mm - 89% +70°C
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