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. 771-9379
BrandRS PRO
SGD14.77
Each
units
5V dc - 500mA 3W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Ultra-Miniature 35mm 24mm 11mm - 69% +85°C
RS Stock No. 751-1406
BrandRS PRO
SGD67.02
Each
units
5V dc - 3.6A 18W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.5mm 28.5mm 23.5mm 50g 78% +70°C
RS Stock No. 819-3970
BrandRS PRO
SGD177.64
Each
units
24V dc - 6.5A 156W 1 88 → 264V ac Chassis Mount Enclosed 97mm 38mm 158mm 570g 92% +71°C
RS Stock No. 828-0162
BrandRS PRO
SGD111.17
Each
units
12V dc - 4A 60W 4 100 → 240V ac Wall Mount Enclosed 187.2mm 122.2mm 89.9mm <800g 75(Min)% +40°C
RS Stock No. 828-0134
BrandRS PRO
SGD70.33
Each
units
12V dc - 2A 24W 1 100 → 240V ac Cable Enclosed 140mm 80mm 85mm >1kg >70(Min)% +40°C
RS Stock No. 711-2636
BrandRS PRO
SGD93.60
Each
units
24V dc - 2.5A 60W 1 88 → 264V ac Chassis Mount Enclosed 98mm 82mm 35mm 310g 89% +71°C
RS Stock No. 786-4738
BrandRS PRO
SGD18.88
Each
units
9V dc - 560mA 5W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Encapsulated 42mm 11mm 24mm 10g 72% +85°C
RS Stock No. 667-5776
BrandRS PRO
SGD21.95
Each
units
24V dc - 125mA 3W 1 110 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 23mm 15mm 25g 78% +70°C
RS Stock No. 667-5786
BrandRS PRO
SGD26.68
Each
units
12V dc - 420mA 5W 1 110 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm 35g 76% +70°C
RS Stock No. 771-9414
BrandRS PRO
SGD19.65
Each
units
12V dc - 167mA 2W 1 120 → 430 V dc, 85 → 305 V ac PCB Mount Encapsulated 33.7mm 22.2mm 18mm 20g 76% +70°C
RS Stock No. 751-1431
BrandRS PRO
SGD86.75
Each
units
24V dc - 1.7A 40.8W 1 85 → 265V ac PCB Mount Enclosed 89mm 63.5mm 25mm 250g - +71°C
RS Stock No. 771-9401
BrandRS PRO
SGD19.65
Each
units
5V dc - 400mA 2W 1 120 → 430 V dc, 85 → 305 V ac PCB Mount Encapsulated 33.7mm 22.2mm 18mm 20g 70% +70°C
RS Stock No. 667-5789
BrandRS PRO
SGD26.68
Each
units
5V dc - 1A 5W 1 110 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm 35g 72% +70°C
RS Stock No. 181-2149
BrandRS PRO
SGD200.11
1 Tube of 19
Tube(s)
24V dc - 250mA 6W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm 31g 80% +70°C
RS Stock No. 711-2620
BrandRS PRO
SGD93.60
Each
units
5V dc - 9A 45W 1 88 → 264V ac Chassis Mount Enclosed 98mm 82mm 35mm 310g 82% +71°C
RS Stock No. 181-2145
BrandRS PRO
SGD200.11
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. 786-4731
BrandRS PRO
SGD18.88
Each
units
12V dc - 420mA 5W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Encapsulated 42mm 11mm 24mm 10g 74% +85°C
RS Stock No. 161-8284
BrandRS PRO
SGD23.32
Each
units
5V dc - 14A 60W 1 100 → 240V ac Chassis Mount Enclosed 97mm 99mm 30mm 300g 84% +50°C
RS Stock No. 181-2132
BrandRS PRO
SGD114.59
1 Tube of 13
Tube(s)
3V dc - 770mA 2.3W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 66% +70°C
RS Stock No. 161-8293
BrandRS PRO
SGD25.53
Each
units
15V dc - - 105W 1 85 → 264V ac Chassis Mount Enclosed 129mm 97mm 30mm 340g - +70°C
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