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. 192-1071
Mfr. Part No.LPS25
MYR242.84
Each
units
24 V dc - 1.8A 25W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 338-1784
Mfr. Part No.JWT75-5FF/A
BrandTDK-Lambda
MYR1,456.25
Each
units
±15 V dc, 5 V dc - 3.2 A, 8 A, 500 mA 75W 3 85 → 265 V ac, 120 → 330 V dc Chassis Mount Enclosed 188mm 92mm 42mm 600g 72% +50°C
RS Stock No. 680-2691
Mfr. Part No.LS25-5
BrandTDK-Lambda
MYR133.66
Each
units
5 V dc - 5A 25W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 3.1in 2in 1.1in 170g 79% +70°C
RS Stock No. 106-5870
Mfr. Part No.LRS-350-36RS
BrandMean Well
MYR183.55
Each
units
36 V dc - 9.7A 349W 1 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc Chassis Mount Enclosed 215mm 115mm 30mm 760g 88.5% +70°C
RS Stock No. 413-611
Mfr. Part No.RT-65D
BrandMean Well
MYR234.17
Each
units
5 V dc, 12 V dc, 24 V dc - 1 A, 1.5 A, 4 A 68W 3 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 129mm 98mm 38mm 440g 79% +70°C
RS Stock No. 813-9027
Mfr. Part No.HWS30A-12/A
BrandTDK-Lambda
MYR327.34
Each
units
12 V dc - 2.5A 30W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Enclosed 82mm 26.5mm 95mm 220g 88% +50°C
RS Stock No. 106-5823
Mfr. Part No.LRS-35-12RS
BrandMean Well
MYR67.02
Each
units
12 V dc - 3A 36W 1 85 → 264 V ac, 120 → 373 V dc Chassis Mount Enclosed 99mm 82mm 30mm 230g 86% +70°C
RS Stock No. 745-1262
Mfr. Part No.TXL 350-48S
BrandTRACOPOWER
MYR917.04
Each
units
48 V dc - 7.3A 360W 1 85 → 264V ac Chassis Mount Enclosed 224mm 115mm 50mm 1.1kg 70 → 84% +70°C
RS Stock No. 106-5858
Mfr. Part No.LRS-200-5RS
BrandMean Well
MYR279.82
Each
units
5 V dc - 40A 200W 1 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc Chassis Mount Enclosed 215mm 115mm 30mm 660g 87% +70°C
RS Stock No. 106-5830
Mfr. Part No.LRS-50-12
BrandMean Well
MYR71.03
Each
units
12 V dc - 4.2A 50W 1 85 → 264 V ac, 120 → 373 V dc Chassis Mount Enclosed 99mm 82mm 30mm 230g 86% +70°C
RS Stock No. 489-8700
Mfr. Part No.PBA300F-24
BrandCosel
MYR1,834.08
Each
units
24 V dc - 14A 336W 1 85 → 264 V ac, 120 → 350 V dc Chassis Mount Enclosed 170mm 102mm 42mm 1kg 79 %, 82 % +71°C
RS Stock No. 813-9086
Mfr. Part No.HWS150A-48/A
BrandTDK-Lambda
MYR681.38
Each
units
48 V dc - 3.3A 150W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Enclosed 82mm 37mm 160mm 500g 90% +50°C
RS Stock No. 183-0054
Mfr. Part No.LPT45
MYR245.63
Each
units
±15 V dc, 5 V dc - 2.5 A, 5 A, 700 mA 40W 3 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 289-5181
Mfr. Part No.LPQ253-CEF
MYR2,266.86
Each
units
±15 V dc, 5 V dc - 6 A, 10 A, 35 A 250W 4 85 → 264 V ac, 120 → 300 V dc Rack Mount Enclosed 262mm 127mm 76.2mm 1.4kg 75% +50°C
RS Stock No. 680-2815
Mfr. Part No.LS150-12
BrandTDK-Lambda
MYR244.05
Each
units
12 V dc - 12.5A 150W 1 76 → 264 V ac, 88 → 132 V ac, 248 → 273 V dc Chassis Mount Enclosed 7.8in 3.9in 1.5in 700g 83% +70°C
RS Stock No. 818-7372
Mfr. Part No.AE-1500-12
BrandCOTEK
MYR3,550.34
Each
units
12 V dc - 125A 1.5kW 1 90 → 264 V ac, 127 → 370 V dc Rack Mount Enclosed 127mm 63.5mm 280mm 2.6kg 89% +60°C
RS Stock No. 644-7089
Mfr. Part No.RD-50B
BrandMean Well
MYR178.81
Each
units
5 V dc, 24 V dc - 1.4 A, 4 A 53.6W 2 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 99mm 97mm 36mm 410g 80% +70°C
RS Stock No. 844-4026
Mfr. Part No.RAC60-24S/OF
BrandRecom
MYR151.41
Each
units
24 V dc - 2.5A 60W 1 90 → 265 V ac, 127 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 30mm 145g 85% +70°C
RS Stock No. 106-5861
Mfr. Part No.LRS-200-24RS
BrandMean Well
MYR170.06
Each
units
24 V dc - 8.8A 211W 1 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc Chassis Mount Enclosed 215mm 115mm 30mm 660g 89.5% +70°C
RS Stock No. 680-2827
Mfr. Part No.LS150-24
BrandTDK-Lambda
MYR244.05
Each
units
24 V dc - 6.5A 150W 1 248 → 273V dc Chassis Mount Enclosed 7.8in 3.9in 1.5in 700g 86% +70°C