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. 181-3807
Mfr. Part No.S8FS-G-03015CD
BrandOmron
$90.86
Each
units
15 V dc S8FS-G 2.4A 30W 1 100 → 240V ac DIN Rail Mount - 117.7mm 82mm 36.2mm 250g 88% +70°C
RS Stock No. 181-3802
Mfr. Part No.S8FS-G10024C
BrandOmron
$163.17
Each
units
24 V dc S8FS-G 4.5A 100W 1 100 → 240V ac Direct Mount - 129mm 97mm 38mm 400g 89% +70°C
RS Stock No. 181-3810
Mfr. Part No.S8FS-G01505C
BrandOmron
$66.69
Each
units
5 V dc S8FS-G 3A 15W 1 100 → 240V ac Direct Mount - 99mm 82mm 35mm 250g 80% +70°C
RS Stock No. 181-3808
Mfr. Part No.S8FS-G01524C
BrandOmron
$105.72
Each
units
24 V dc S8FS-G 650mA 15W 1 100 → 240V ac Direct Mount - 99mm 82mm 35mm 250g 86% +70°C
RS Stock No. 181-3786
Mfr. Part No.S8VS-01505
BrandOmron
$155.97
Each
units
5 V dc S8VS 2A 15W 1 100 → 240V ac DIN Rail Mount - 22.5mm 96.4mm 94.6mm 160g 74% +60°C
RS Stock No. 181-3805
Mfr. Part No.S8FS-G-05015CD
BrandOmron
$118.37
Each
units
15 V dc S8FS-G 3.5A 50W 1 80 → 370 V dc, 85 → 264 V ac DIN Rail Mount - 99mm 97mm 36mm 300g 88% +70°C
RS Stock No. 181-3792
Mfr. Part No.S8VK-S12024
BrandOmron
$200.79
Each
units
24 V dc S8VK-S 5A 120W 1 100 → 240V ac DIN Rail Mount - 55mm 90mm 90mm 400g 92% +70°C
RS Stock No. 181-3804
Mfr. Part No.S8FS-G05024C
BrandOmron
$137.51
Each
units
24 V dc S8FS-G 2.2A 50W 1 100 → 240V ac Direct Mount - 117.7mm 97mm 37.2mm 300g 89% +70°C
RS Stock No. 181-3783
Mfr. Part No.S8VS-01524
BrandOmron
$212.77
Each
units
24 V dc S8VS 650mA 15W 1 100 → 240V ac DIN Rail Mount - 22.5mm 96.4mm 94.6mm 160g 83% +60°C
RS Stock No. 181-3798
Mfr. Part No.S8JX-P30024C
BrandOmron
$530.71
Each
units
24 V dc S8JX 16.5A 300W 1 100 → 240V ac Front Mount - 77.6mm 217.3mm 124.3mm 1.6kg 82 (Minimum)% +60°C
RS Stock No. 181-3785
Mfr. Part No.S8VS-01512
BrandOmron
$315.50
Each
units
12 V dc S8VS 1.2A 15W 1 100 → 240V ac DIN Rail Mount - 22.5mm 96.4mm 94.6mm 160g 79% +60°C
RS Stock No. 181-3781
Mfr. Part No.S8VS-03012
BrandOmron
$196.77
Each
units
12 V dc S8VS 2.5A 30W 1 100 → 240V ac DIN Rail Mount - 22.5mm 96.4mm 94.6mm 180g 81% +60°C
RS Stock No. 181-3794
Mfr. Part No.S8VK-G03005
BrandOmron
$122.38
Each
units
5 V dc S8VK-G 5A 30W 1 90 → 350 V dc, 100 → 240 V ac DIN Rail Mount - 32mm 90mm 90mm 150g 79% +70°C
RS Stock No. 181-3782
Mfr. Part No.S8VS-03005
BrandOmron
$208.28
Each
units
5 V dc S8VS 4A 30W 1 100 → 240V ac DIN Rail Mount - 22.5mm 96.4mm 94.6mm 180g 74% +60°C
RS Stock No. 181-3800
Mfr. Part No.S8JX-P30005C
BrandOmron
$530.71
Each
units
5 V dc S8JX 60A 300W 1 100 → 240V ac Front Mount - 77.6mm 217.3mm 124.3mm 1.8kg 71 (Minimum)% +60°C
RS Stock No. 181-3791
Mfr. Part No.S8VK-T12024
BrandOmron
$218.25
Each
units
24 V dc S8VK-T 5A 120W 1 380 → 480 V ac, 450 → 600 V dc DIN Rail Mount - 40mm 122.2mm 125mm 700g 89% +70°C
RS Stock No. 181-3795
Mfr. Part No.S8JX-P60024C
BrandOmron
$816.44
Each
units
24 V dc S8JX 27A 600W 1 100 → 240V ac Front - 92mm 110mm 165mm 2.5kg 80 (Minimum)% +70°C
RS Stock No. 181-3789
Mfr. Part No.S8VK-T24024
BrandOmron
$608.92
Each
units
24 V dc S8VK-T 10A 240W 1 380 → 480 V ac, 450 → 600 V dc DIN Rail Mount - 60mm 150mm 125mm 1kg 89% +70°C
RS Stock No. 181-3788
Mfr. Part No.S8VK-T48024
BrandOmron
$857.68
Each
units
24 V dc S8VK-T 20A 480W 1 380 → 480 V ac, 450 → 600 V dc DIN Rail Mount - 95mm 150mm 125mm 1.6kg 91% +70°C
RS Stock No. 181-3787
Mfr. Part No.S8VK-T96024
BrandOmron
$1,156.03
Each
units
24 V dc S8VK-T 40A 960W 1 380 → 480V ac DIN Rail Mount - 135mm 180mm 125mm 2.7kg 92% +70°C