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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RS Stock No. 161-8215
Brand :RS PRO
THB457.60
Each
Units
12V dc - 2.1A 25.2W 1 88 → 264V ac Chassis Mount Enclosed 850mm 58.5mm 36.5mm 250g 77.5% +60°C
RS Stock No. 181-3256
Brand :RS PRO
THB1,128.95
Each
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RS Stock No. 144-6282
Brand :RS PRO
THB670.31
Each
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12V dc - 430mA 5W 1 264 V ac, 370 V dc PCB Mount Encapsulated 53.8mm 28.8mm 19mm 43g - +70°C
RS Stock No. 181-3235
Brand :RS PRO
THB12,470.53
1 Tube of 13
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3.3V dc - 900mA 3W 1 120 → 370 V dc, 90 → 264 V ac Through Hole Encapsulated 35.7mm 19mm 25mm 27.5g 67% +85°C
RS Stock No. 161-8235
Brand :RS PRO
THB6,571.15
Each
Units
48V dc - 11A 480W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm 8.7kg - +70°C
RS Stock No. 751-1428
Brand :RS PRO
THB1,636.17
Each
Units
15V dc - 2A 30W 1 85 → 265V ac PCB Mount Enclosed 89mm 63.5mm 25mm 250g - +71°C
RS Stock No. 181-2114
Brand :RS PRO
THB337.00
Each
Units
3V dc - 2A 6.6W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 19mm 48g 71% +70°C
RS Stock No. 161-8241
Brand :RS PRO
THB6,277.37
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36V dc - 17.5A 630W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - 90% +70°C
RS Stock No. 161-8249
Brand :RS PRO
THB692.71
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Units
24V dc - 1.9A 45.6W 1 90 → 264V ac Chassis Mount Open Frame 101.6mm 51mm 30.5mm - 85% +60°C
RS Stock No. 161-8285
Brand :RS PRO
THB604.09
Each
Units
12V dc - 6A 72W 1 100 → 240V ac Chassis Mount Enclosed 97mm 99mm 30mm 300g 88% +50°C
RS Stock No. 161-8268
Brand :RS PRO
THB2,428.20
Each
Units
27.6V dc - 5A 140W 2 195 → 253V ac Chassis Mount Enclosed 200mm 110mm 50mm 900g - +45°C
RS Stock No. 181-2116
Brand :RS PRO
THB337.00
Each
Units
9V dc - 1.1A 10W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 19mm 48g 80% +70°C
RS Stock No. 144-6283
Brand :RS PRO
THB672.88
Each
Units
24V dc - 230mA 5.5W 1 264 V ac, 370 V dc PCB Mount Encapsulated 53.8mm 28.8mm 19mm 43g - +70°C
RS Stock No. 181-2118
Brand :RS PRO
THB337.00
Each
Units
24V dc - 450mA 10W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.8mm 28.8mm 19mm 48g 83% +70°C
RS Stock No. 161-8245
Brand :RS PRO
THB8,004.57
Each
Units
48V dc - 14A 800W 1 90 → 264V ac Chassis Mount Enclosed 226mm 116.5mm 41mm - 89% +70°C
RS Stock No. 751-1415
Brand :RS PRO
THB1,636.17
Each
Units
5V dc - 6A 30W 1 85 → 265V ac PCB Mount Enclosed 89mm 63.5mm 25mm 250g - +71°C
RS Stock No. 711-2608
Brand :RS PRO
THB1,390.33
Each
Units
15V dc - 1.4A 21W 1 88 → 264V ac Chassis Mount Enclosed 92mm 54mm 30mm 140g 87% +71°C
RS Stock No. 711-2636
Brand :RS PRO
THB1,937.86
Each
Units
24V dc - 2.5A 60W 1 88 → 264V ac Chassis Mount Enclosed 98mm 82mm 35mm 310g 89% +71°C
RS Stock No. 161-8229
Brand :RS PRO
THB3,130.83
Each
Units
24V dc - 13A 300W 1 120 → 370 V dc, 90 → 264 V ac PCB Mount Enclosed 199mm 99mm 50mm - 87% +65°C
RS Stock No. 161-8296
Brand :RS PRO
THB676.61
Each
Units
48V dc - 2.3A 110W 1 85 → 264V ac Chassis Mount Enclosed 129mm 97mm 30mm 340g 91% +70°C
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