Embedded Switch Mode Power Supplies (SMPS)

What are Embedded Switch Mode Power Supplies?


A switch mode power supplies 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. 621-0685
Mfr. Part No.RS-150-24
BrandMean Well
£22.67
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. 466-7203
Mfr. Part No.TXL 060-24S
BrandTRACOPOWER
£47.06
Each
Units
24 V dc - 2.5A 60W 85 → 264V ac 1 Chassis Mount Enclosed 109mm 82mm 35mm - - 300g
RS Stock No. 621-0613
Mfr. Part No.RS-50-24
BrandMean Well
£13.13
Each
Units
24 V dc - 2.2A 52.8W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 99mm 97mm 36mm - - 410g
RS Stock No. 745-1275
Mfr. Part No.TXL 750-48S
BrandTRACOPOWER
£270.01
Each
Units
48 V dc - 15.6A 758W 85 → 264V ac 1 Chassis Mount Enclosed 275mm 125mm 63mm - - 3.5kg
RS Stock No. 621-0679
Mfr. Part No.RS-100-24
BrandMean Well
£23.31
Each
Units
24 V dc - 4.5A 108W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 159mm 97mm 38mm - - 600g
RS Stock No. 528-8198
Mfr. Part No.NV1-1T000-C
BrandTDK-Lambda
£144.00
Each
Units
12 V dc - 15A 175W 90 → 264V ac 1 Chassis Mount Enclosed 127mm 76mm 31.75mm - - 250g
RS Stock No. 377-6930
Mfr. Part No.LFVLT60-3000
BrandEOS
£46.82
Each
Units
5.2/12.5 V dc - 3 A, 8 A, 500 mA 60W 90 → 132 V ac, 180 → 264 V ac 3 Chassis Mount Open Frame 101.6mm 51.8mm 27.18mm - - 150g
RS Stock No. 621-0641
Mfr. Part No.RS-75-24
BrandMean Well
£15.71
Each
Units
24 V dc - 3.2A 76.8W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 129mm 97mm 38mm - - 410g
RS Stock No. 815-7472
Mfr. Part No.RSP-500-24RS
BrandMean Well
£96.05
Each
Units
24 V dc - 21A 504W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 230mm 127mm 40.5mm - - 1.3kg
RS Stock No. 705-9835
Mfr. Part No.SP-240-24RS
BrandMean Well
£83.92
Each
Units
24 V dc - 10A 240W 88 → 264 V ac, 124 → 370 V dc 1 Chassis Mount Enclosed 190mm 93mm 50mm - - 800g
RS Stock No. 183-0010
Mfr. Part No.LPT42
£32.83
Each
Units
5/±12 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. 771-9354
BrandRS PRO
£5.30
Each
Units
5 V dc - 200mA 1W 85 → 264 V ac, 100 → 400 V dc 1 PCB Mount Miniature 35mm 24mm 11mm - - -
RS Stock No. 621-0629
Mfr. Part No.RS-50-12
BrandMean Well
£14.62
Each
Units
12 V dc - 4.2A 50W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 99mm 97mm 36mm - - 410g
RS Stock No. 621-0584
Mfr. Part No.RS-25-24
BrandMean Well
£10.19
Each
Units
24 V dc - 1.1A 26W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 78mm 51mm 28mm - - 200g
RS Stock No. 377-6845
Mfr. Part No.LFVLT40-3200
BrandEOS
£35.10
Each
Units
5.2/12.5/12.8 V dc - 2 A, 6 A, 500 mA 40W 90 → 132 V ac, 180 → 264 V ac 3 Chassis Mount Open Frame 101.6mm 50.8mm 27.18mm - - 150g
RS Stock No. 621-0657
Mfr. Part No.RS-100-12
BrandMean Well
£23.97
Each
Units
12 V dc - 8.5A 102W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 159mm 97mm 38mm - - 600g
RS Stock No. 418-2308
Mfr. Part No.TXL 060-0534TI
BrandTRACOPOWER
£74.76
Each
Units
5/12/24 V dc - 1.2 A, 1.5 A, 6 A 60W 85 → 264 V ac, 120 → 375 V dc 3 Chassis Mount Enclosed 169mm 95mm 38mm - - 700g
RS Stock No. 413-667
Mfr. Part No.RS-15-12
BrandMean Well
£8.94
Each
Units
12 V dc - 1.3A 15.6W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 62.5mm 51mm 28mm - - 130g
RS Stock No. 183-0111
Mfr. Part No.LPT62
£51.16
Each
Units
5/±12 V dc - 1 A, 3.5 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. 621-0663
Mfr. Part No.RS-150-12
BrandMean Well
£24.98
Each
Units
12 V dc - 12.5A 150W 88 → 132 V ac, 176 → 264 V ac, 248 → 373 V dc 1 Chassis Mount Enclosed 199mm 98mm 38mm - - 700g