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. 106-5843
Mfr. Part No.LRS-100-5RS
BrandMean Well
SGD32.42
Each
units
5 V dc - 18A 90W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS Stock No. 489-8687
Mfr. Part No.PBA150F-24-N
BrandCosel
SGD210.26
Each
units
24 V dc - 6.5A 156W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 168mm 93mm 34mm - - 560g
RS Stock No. 106-5869
Mfr. Part No.LRS-350-24RS
BrandMean Well
SGD55.36
Each
units
24 V dc - 14.6A 350W 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc 1 Chassis Mount Enclosed 215mm 115mm 30mm - - 760g
RS Stock No. 200-213
Mfr. Part No.HWS1500-24/HD
BrandTDK-Lambda
SGD2,545.83
Each
units
24 V dc - 70A 1.5kW 85 → 265 V ac, 120 → 330 V dc 1 Rack Mount Enclosed 11in 3.25in 5in - - 3.8kg
RS Stock No. 183-0098
Mfr. Part No.LPS65
SGD100.19
Each
units
24 V dc - 2.5A 60W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS Stock No. 466-6856
Mfr. Part No.TXL 035-0524D
BrandTRACOPOWER
SGD99.68
Each
units
5/24 V dc - 1.3 A, 4 A 35W 85 → 264V ac 2 Chassis Mount Enclosed 109mm 82mm 35mm - - 300g
RS Stock No. 621-0685
Mfr. Part No.RS-150-24
BrandMean Well
SGD46.05
Each
units
24 V dc - 6.5A 156W 88 → 132 V ac, 176 → 264 V ac, 248 → 373 V dc 1 Chassis Mount Enclosed 199mm 98mm 38mm - - 700g
RS Stock No. 813-9064
Mfr. Part No.HWS-100A-24/A
BrandTDK-Lambda
SGD171.33
Each
units
24 V dc - 4.5A 100W 85 → 265 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 82mm 28mm 160mm - - 450g
RS Stock No. 603-1094
Mfr. Part No.PBA600F-24
BrandCosel
SGD673.76
Each
units
24 V dc - 27A 648W 85 → 264 V ac, 120 → 350 V dc 1 Chassis Mount Open Frame 221mm 120mm 61mm - - 1.6kg
RS Stock No. 603-1000
Mfr. Part No.PBA15F-9-N
BrandCosel
SGD86.17
Each
units
9 V dc - 1.7A 15W 85 → 264 V ac, 110 → 370 V dc 1 Chassis Mount Enclosed 101.5mm 34.5mm 78mm - - 200g
RS Stock No. 106-5846
Mfr. Part No.LRS-100-24RS
BrandMean Well
SGD26.15
Each
units
24 V dc - 4.5A 108W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS Stock No. 635-2199
Mfr. Part No.HWS600-24
BrandTDK-Lambda
SGD951.57
Each
units
24 V dc - 27A 648W 85 → 265 V ac, 120 → 330 V dc 1 Chassis Mount Enclosed 6.5in 3.23in 3.94in - - 1.6kg
RS Stock No. 706-6195
Mfr. Part No.TML 40512C
BrandTRACOPOWER
SGD189.85
Each
units
5/±12 V dc - 5 A, 600 mA 40W 90 → 264 V ac, 100 → 375 V dc 3 Chassis Mount Encapsulated 112mm 63.7mm 32.5mm - - 325g
RS Stock No. 183-0054
Mfr. Part No.LPT45
SGD74.59
Each
units
5/±15 V dc - 2.5 A, 5 A, 700 mA 40W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 828-8627
Mfr. Part No.PMA30F-5
BrandCosel
SGD107.62
Each
units
5 V dc - 6A 30W 85 → 264V ac 1 Chassis Mount Open Frame 120mm 34.5mm 82mm - - 240g
RS Stock No. 183-0127
Mfr. Part No.LPT63
SGD94.27
Each
units
5/±15 V dc - 1 A, 3.3 A, 8 A 60W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS Stock No. 680-2701
Mfr. Part No.LS25-12
BrandTDK-Lambda
SGD33.57
Each
units
12 V dc - 2.1A 25W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 3.1in 2in 1.1in - - 170g
RS Stock No. 489-8659
Mfr. Part No.PBA100F-24-N
BrandCosel
SGD164.80
Each
units
24 V dc - 4.5A 108W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 160.5mm 93.5mm 35.5mm - - 440g
RS Stock No. 489-8700
Mfr. Part No.PBA300F-24
BrandCosel
SGD456.63
Each
units
24 V dc - 14A 336W 85 → 264 V ac, 120 → 350 V dc 1 Chassis Mount Enclosed 170mm 102mm 42mm - - 1kg
RS Stock No. 833-8170
Mfr. Part No.MAP80-4002
SGD886.17
Each
units
5/±12 V dc - 1 A, 4 A, 14 A 80W 90 → 132 V ac, 175 → 264 V ac 4 U Bracket U Bracket 182.9mm 106.7mm 45.7mm - - 820g
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