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. 196-1677
Mfr. Part No.GXE600-48/A
BrandTDK-Lambda
£477.95
Each
Units
48V dc GEX600 12.5A 600W 1 85 → 265V ac Chassis Mount - 50mm 254mm 127.5mm 1.3kg 95% +70°C
RS Stock No. 183-9459
Mfr. Part No.CUS1500M-24
BrandTDK-Lambda
£500.06
Each
Units
24V dc CUS1500M 63A 1.5kW 1 120 → 340 V dc, 85 → 265 V ac - Enclosed 127mm 261mm 63mm 3kg 88 (Typ.)% +60°C
RS Stock No. 185-6165
Mfr. Part No.CUS200LD-48
BrandTDK-Lambda
£62.18
Each
Units
48V dc CUS200LD 2.5 A, 3.15 A 120 (Convection) W, 151.2 (Conduction) W 1 85 → 265V ac - Enclosed 160mm 62mm 31mm 430g 90% +70°C
RS Stock No. 126-2027
Mfr. Part No.ECE80US36-S
BrandXP Power
£81.47
Each
Units
36V dc - 2.22 → 2.89A 80W 1 85 → 264V ac Chassis Mount Encapsulated 113mm 47.5mm 28.5mm 280g 87% +70°C
RS Stock No. 122-7686
Mfr. Part No.ECE60US12
BrandXP Power
£64.32
Each
Units
12V dc - 5A 60W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 91.4mm 38.1mm 28mm 191g 87% +70°C
RS Stock No. 891-3459
Mfr. Part No.SLS-15-060T
BrandSolaHD
£201.00
Each
Units
15V dc - 6A - 1 100 → 240V ac Chassis Mount Open Frame 229mm 124mm 124mm 3.4kg - +50°C
RS Stock No. 172-0786
Mfr. Part No.UCP180PS28
BrandXP Power
£79.93
Each
Units
28V dc - 4.3 A, 6.43 A 180W 1 85 → 264V ac Chassis Mount U Bracket 107.6mm 62.8mm 29.5mm 240g 92% 70°C
RS Stock No. 122-6582
Mfr. Part No.EML15US03-E
BrandXP Power
£29.42
Each
Units
3.3V dc - 3A 10W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 65mm 33.3mm 24.4mm 90g - +70°C
RS Stock No. 131-1379
Mfr. Part No.LFA75F-5-Y
BrandCosel
£48.49
Each
Units
5V dc - 15A 75W 1 85 → 264V ac Chassis Mount Open Frame 150mm 50mm 30mm 230g 80% +70°C
RS Stock No. 787-8917
Mfr. Part No.NPS64-M
£19.15
Each
Units
15V dc - 4A 60W 1 127 → 300 V dc, 90 → 264 V ac Chassis Mount Open Frame 101.6mm 50.8mm 32.1mm 118g - +50°C
RS Stock No. 132-7447
Mfr. Part No.PMA100F-5-N
BrandCosel
£104.36
Each
Units
5V dc - 20A 100W 1 85 → 264V ac Panel Mount Enclosed 34mm 168mm 93mm 625g - +70°C
RS Stock No. 174-8163
Mfr. Part No.UHP-500R-36
BrandMean Well
£78.29
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. 131-1772
Mfr. Part No.LFP150F-48-SNY
BrandCosel
£76.25
Each
Units
48V dc - 3.2A 153.6W 1 85 → 264V ac Chassis Mount Enclosed 188mm 85mm 47mm 610g 88% +70°C
New
RS Stock No. 209-5778
Mfr. Part No.CUS400M-12
BrandTDK-Lambda
£128.94
Each
Units
12V CUS400M 20.83A 400W 1 85 - 264V ac - Open Frame - - - - - -
RS Stock No. 174-8137
Mfr. Part No.UHP-350-5
BrandMean Well
£64.52
Each
Units
5V dc - 60A 300W 1 127 → 370 V dc, 90 → 264 V ac Chassis Mount Enclosed 220mm 62mm 31mm 680g 90% +70°C
RS Stock No. 131-1947
Mfr. Part No.LMA240F-24-HY
BrandCosel
£95.79
Each
Units
24V dc - 10A 300W 1 85 → 264V ac Chassis Mount Open Frame 180mm 84mm 43mm 540g - +70°C
RS Stock No. 188-4778
Mfr. Part No.PCA300F-12
BrandCosel
£275.04
Each
Units
12V dc PCA300F 27A 324W 1 85 → 264 V ac, 88 → 370 V dc Chassis Mount Enclosed 89mm 152mm 41mm 840g 90% +70°C
New
RS Stock No. 210-4116
Mfr. Part No.ECH450PS54-EF
BrandXP Power
£146.34
Each
Units
54V ECH450 4.63 A, 8.33 A 450W 1 264V ac - Enclosed - - - - - -
RS Stock No. 181-0589
Mfr. Part No.TMPS 10-105
BrandTRACOPOWER
£19.48
Each
Units
5V dc TMPS 10 2A 10W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 25.4mm 38.1mm 15.74mm 29g 80% +70°C
RS Stock No. 165-5072
Mfr. Part No.RAC10-12SK/277
BrandRecom
£8.87
Each
Units
12V dc - 840mA 10W 1 85 → 305V ac PCB Mount Encapsulated 52.5mm 27.4mm 23mm 65g 84% +80°C