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. 183-0010
Mfr. Part No.LPT42
kr 416,31
Each
Units
±12 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. 182-9975
Mfr. Part No.LPS42
kr 532,05
Each
Units
5 V dc - 11A 40W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 461-795
Mfr. Part No.AIT02ZPFC-01NL
kr 1 343,90
Each
Units
393 V dc - 1.83A 720W 1 85 → 264V ac PCB Mount Encapsulated 88.9mm 60.96mm 12.7mm 170g 93% +100°C
RS Stock No. 183-0098
Mfr. Part No.LPS65
kr 705,81
Each
Units
24 V dc - 2.5A 60W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 42.9mm 340g 70% +50°C
RS Stock No. 629-5787
Mfr. Part No.NLP65-9608GJ
kr 913,88
Each
Units
±12 V dc, 5 V dc - 2.5 A, 7.5 A, 650 mA 65W 3 85 → 264V ac Chassis Mount Open Frame 127mm 76.2mm 32mm 283g 72% +70°C
RS Stock No. 111-6583
Mfr. Part No.LCM1000W-T
kr 3 760,54
Each
Units
48 V dc - 20.8A 1kW 1 90 → 264V ac Chassis Mount Enclosed 276.9mm 132mm 61.7mm - - +70°C
RS Stock No. 183-0032
Mfr. Part No.LPT44
kr 474,85
Each
Units
±12 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. 455-7926
Mfr. Part No.LPS175-M-C
kr 1 902,29
Each
Units
24 V dc - 7.5A 110W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Enclosed 216mm 108mm 38.1mm 850g 75% +50°C
RS Stock No. 461-812
Mfr. Part No.AIF04ZPFC-01L
kr 2 843,96
Each
Units
380 V dc - 4.2A 1.6kW 1 85 → 264 V ac, 120 → 370 V dc PCB Mount Encapsulated 116.8mm 61mm 13.95mm 300g 95% +100°C
RS Stock No. 839-9783
Mfr. Part No.LCC600-28U-4P
kr 3 247,23
Each
Units
28 V dc - 21.4A 600W 1 90 → 264V ac Chassis Mount Enclosed 228mm 85mm 39.8mm - 93.3% +85°C
RS Stock No. 182-9997
Mfr. Part No.LPS44
kr 452,25
Each
Units
15 V dc - 3.6A 40W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 111-6582
Mfr. Part No.LCM1000Q-T
kr 3 760,54
Each
Units
24 V dc - 41.7A 1kW 1 90 → 264V ac Chassis Mount Enclosed 276.9mm 132mm 61.7mm 2kg - +70°C
RS Stock No. 751-1554
Mfr. Part No.NPS42-M
kr 198,06
Each
Units
5 V dc - 11A 40W 1 90 → 264 V ac, 127 → 300 V dc Chassis Mount Open Frame 101.6mm 50.8mm 25.4mm 118g - +50°C
RS Stock No. 338-1964
Mfr. Part No.LPS355-CEF
kr 4 468,50
Each
Units
24 V dc - 14.6A 350W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Enclosed 273.8mm 127mm 88.9mm 1.6kg 75% +50°C
RS Stock No. 289-5046
Mfr. Part No.LPQ154-C
kr 2 161,02
Each
Units
±12 V dc, 5 V dc - 2.5 A, 4.5 A, 8 A, 22 A 110W 4 85 → 132 V ac, 170 → 264 V ac, 220 → 300 V dc Chassis Mount Enclosed 216mm 108mm 38.1mm 800g 75% +50°C
RS Stock No. 243-2083
Mfr. Part No.LPT65
kr 743,71
Each
Units
5 V dc, 12 V dc, 24 V dc - 1 A, 2 A, 8 A 60W 3 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 42.9mm 340g 70% +50°C
RS Stock No. 787-8910
Mfr. Part No.LCM1500Q-T-4
kr 4 717,77
Each
Units
24 V dc - 67A 1.5kW 1 90 → 264V ac Chassis Mount Enclosed 264.7mm 132mm 61mm 1.9kg - +70°C
RS Stock No. 192-1223
Mfr. Part No.LPS253-C
kr 2 781,12
Each
Units
12 V dc - 21A 250W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Enclosed 262mm 127mm 76.2mm 1.2kg 75% +50°C
RS Stock No. 192-1043
Mfr. Part No.LPS22
kr 363,71
Each
Units
5 V dc - 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. 778-2576
Mfr. Part No.LCM1500Q-T
kr 4 922,88
Each
Units
24 V dc - 67A 1.5kW 1 90 → 264V ac Chassis Mount Enclosed 264.7mm 132mm 61mm 1.9kg - +70°C