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 Input Voltage Number of Outputs Mounting Type Package Type Length Width Depth Ripple And Noise Load Regulation Weight
RS Stock No. 627-3816
Mfr. Part No.XG1
BrandExcelsys
£132.02
Each
Units
3.6V dc - 50A 125W 120 → 380 V dc, 85 → 264 V ac 1 PCB Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 627-3759
Mfr. Part No.XLB
BrandExcelsys
£207.94
Each
Units
- - - 400W 120 → 380 V dc, 85 → 264 V ac 4 Chassis Mount Enclosed 269.75mm 89mm 40.4mm - - 750g
RS Stock No. 627-3787
Mfr. Part No.XCC
BrandExcelsys
£322.30
Each
Units
- - - 1kW 120 → 380 V dc, 85 → 264 V ac 6 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 1.1kg
RS Stock No. 627-3850
Mfr. Part No.XG7
BrandExcelsys
£88.70
Each
Units
28V dc - 5A 120W 120 → 380 V dc, 85 → 264 V ac 1 PCB Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 627-3838
Mfr. Part No.XG4
BrandExcelsys
£132.02
Each
Units
30V dc - 10A 240W 120 → 380 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 627-3844
Mfr. Part No.XG5
BrandExcelsys
£132.02
Each
Units
58V dc - 6A 288W 120 → 380 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 627-3800
Mfr. Part No.XG2
BrandExcelsys
£132.02
Each
Units
6V dc - 40A 200W 120 → 380 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 627-3771
Mfr. Part No.XLC
BrandExcelsys
£145.86
Each
Units
- - - 600W 120 → 380 V dc, 85 → 264 V ac 4 Chassis Mount Enclosed 269.75mm 89mm 40.4mm - - 750g
RS Stock No. 627-3822
Mfr. Part No.XG3
BrandExcelsys
£132.02
Each
Units
15V dc - 20A 240W 120 → 380 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 627-3793
Mfr. Part No.XCD
BrandExcelsys
£357.80
Each
Units
- - - 1.2kW 120 → 380 V dc, 85 → 264 V ac 6 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 1.1kg
RS Stock No. 627-3866
Mfr. Part No.XG8
BrandExcelsys
£123.27
Each
Units
28V dc - 3A 72W 120 → 380 V dc, 85 → 264 V ac 2 Chassis Mount Enclosed 269.75mm 127mm 40.4mm - - 100g
RS Stock No. 905-6608
Mfr. Part No.UX4
BrandExcelsys
£164.18
Each
Units
- - - 600W 120 → 380 V dc, 85 → 264 V ac 1 Rack Mount Enclosed 269.7mm 89mm 40.4mm - - -
RS Stock No. 905-6633
Mfr. Part No.XGK
BrandExcelsys
£109.96
Each
Units
24V dc - - 220W 85 → 264V ac 1 Rack Mount Open Frame 269.7mm - - - - -
RS Stock No. 905-6605
Mfr. Part No.XGA
BrandExcelsys
£91.91
Each
Units
12V dc - - 150W 85 → 264V ac 1 Rack Mount Open Frame 269.7mm - - - - -
RS Stock No. 905-6651
Mfr. Part No.XS1000-48N-000
BrandExcelsys
£356.33
Each
Units
58V dc - 21A 1kW 100 → 240V ac 1 Rack Mount Enclosed 237mm 128mm 40.6mm - - -