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. 146-9338
Mfr. Part No.CSS65A-15
BrandTDK-Lambda
£44.64
Each
Units
15V dc - 4.34A 65W 1 90 → 264V ac Chassis Mount Open Frame 101.6mm 50.8mm 27.5mm 136g - +70°C
RS Stock No. 136-8823
Mfr. Part No.ULP40-1315
BrandEOS
£25.64
Each
Units
15V dc - 2.67A 40W 1 264 V ac, 390 V dc Surface Mount Open Frame 76.2mm 50.8mm 16.76mm 100g 85% +70°C
RS Stock No. 839-9651
Mfr. Part No.HWS-100A-24/ME/A
BrandTDK-Lambda
£111.55
Each
Units
24V dc - 4.5A 108W 1 120 → 370 V dc, 85 → 265 V ac Chassis Mount Open Frame 160mm 82mm 28mm 450g - +70°C
RS Stock No. 183-9447
Mfr. Part No.CUS100ME-24/A
BrandTDK-Lambda
£59.11
Each
Units
24V dc CUS100ME 4.16A 100W 1 85 → 264V ac Chassis Mount Enclosed 116mm 64mm 39.7mm 255g 94% +85°C
RS Stock No. 135-9249
Mfr. Part No.IRM-02-3.3SMD
BrandMean Well
£5.35
Each
Units
3.3V dc - 600mA 2W 1 120 → 430 V dc, 85 → 305 V ac Surface Mount Encapsulated 33.7mm 22.2mm 16mm 19g 66% +85°C
RS Stock No. 174-8156
Mfr. Part No.UHP-500-36
BrandMean Well
£75.17
Each
Units
36V dc - 13.9A 500.4W 1 127 → 370 V dc, 90 → 264 V ac Chassis Mount Enclosed 232mm 81mm 31mm 905g 95% +70°C
RS Stock No. 183-9446
Mfr. Part No.CUS100ME-24
BrandTDK-Lambda
£38.67
Each
Units
24V dc CUS100ME 4.16A 100W 1 85 → 264V ac Chassis Mount Open Frame 101.6mm 50.8mm 31.5mm 180g 94% +85°C
RS Stock No. 174-8155
Mfr. Part No.UHP-500-24
BrandMean Well
£88.49
Each
Units
24V dc - 20.9A 501.6W 1 127 → 370 V dc, 90 → 264 V ac Chassis Mount Enclosed 232mm 81mm 31mm 905g 94.5% +70°C
RS Stock No. 183-9445
Mfr. Part No.CUS100ME-18/U
BrandTDK-Lambda
£56.67
Each
Units
18V dc CUS100ME 5.55A 100W 1 85 → 264V ac Chassis Mount U Bracket 116mm 64mm 38.5mm 240g 94% +85°C
RS Stock No. 135-9247
Mfr. Part No.IRM-03-15
BrandMean Well
£5.10
Each
Units
15V dc - 200mA 3W 1 120 → 430 V dc, 85 → 305 V ac PCB Mount Encapsulated 37mm 24mm 15mm 20g 78% +85°C
RS Stock No. 183-9444
Mfr. Part No.CUS100ME-18/A
BrandTDK-Lambda
£59.11
Each
Units
18V dc CUS100ME 5.55A 100W 1 85 → 264V ac Chassis Mount Enclosed 116mm 64mm 39.7mm 255g 94% +85°C
RS Stock No. 680-2843
Mfr. Part No.SWS1000L-12
BrandTDK-Lambda
£456.50
Each
Units
12V dc - 88A 1kW 1 120 → 350 V dc, 85 → 265 V ac Chassis Mount Enclosed 9.45in 5.91in 2.4in 2.3kg - +74°C
RS Stock No. 183-9443
Mfr. Part No.CUS100ME-18
BrandTDK-Lambda
£32.60
Each
Units
18V dc CUS100ME 5.55A 100W 1 85 → 264V ac Chassis Mount Open Frame 101.6mm 50.8mm 31.5mm 180g 94% +85°C
RS Stock No. 183-9442
Mfr. Part No.CUS100ME-15/U
BrandTDK-Lambda
£45.74
Each
Units
15V dc CUS100ME 6.66A 100W 1 85 → 264V ac Chassis Mount U Bracket 116mm 64mm 38.5mm 240g 94% +85°C
RS Stock No. 2509655612
Mfr. Part No.LEA100F-24
BrandCosel
£114.74
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509187572
Mfr. Part No.PF1000A-360
BrandTDK-Lambda
£226.64
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509658324
Mfr. Part No.LDA150W-24
BrandCosel
£144.64
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509655599
Mfr. Part No.LEA100F-12
BrandCosel
£114.74
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509657731
Mfr. Part No.ADA600F-36
BrandCosel
£314.18
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509658138
Mfr. Part No.LEP240F-24-SN
BrandCosel
£157.21
Each
Units
- - - - - - - - - - - - - -
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