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. 621-0657
Mfr. Part No.RS-100-12
BrandMean Well
TWD835.00
Each
units
12 V dc - 8.5A 102W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 159mm 97mm 38mm 600g 81% +70°C
RS Stock No. 122-7058
Mfr. Part No.ECM100UT33
BrandXP Power
TWD4,481.00
Each
units
±15 V dc, 5 V dc - 3 A, 10 A, 800 mA 100W 3 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 114.3mm 63.5mm 27mm 180g - +70°C
RS Stock No. 833-8151
Mfr. Part No.MAP55-4000
TWD13,578.00
Each
units
±12 V dc, ±5 V dc - 3 A, 6 A, 500 mA 55W 4 90 → 132 V ac, 175 → 264 V ac U Bracket U Bracket 152.4mm 83.1mm 40.6mm 550g 73 (Min.)% +70°C
RS Stock No. 231-8022
Mfr. Part No.KWD 10 12 12
BrandTDK-Lambda
TWD2,574.00
Each
units
±12 V dc - ±450mA 10W 2 85 → 265 V ac, 110 → 340 V dc PCB Mount Encapsulated 64mm 45mm 20.5mm 100g 73% +70°C
RS Stock No. 644-8212
Mfr. Part No.SP-320-48
BrandMean Well
TWD3,325.00
Each
units
48 V dc - 6.7A 321.6W 1 88 → 264 V ac, 124 → 370 V dc Chassis Mount Enclosed 215mm 115mm 50mm 1.1kg 89% +65°C
RS Stock No. 377-0768
Mfr. Part No.ZWQ130-5224/A
BrandTDK-Lambda
TWD6,382.00
Each
units
±12 V dc, ±24 V dc, 5 V dc - 2 A, 4 A, 15 A 130W 4 85 → 265 V ac, 120 → 370 V dc Chassis Mount Open Frame 225mm 35mm 106mm 730g 72% +70°C
RS Stock No. 122-7075
Mfr. Part No.ECM40UT33
BrandXP Power
TWD1,741.00
Each
units
±15 V dc, 5 V dc - 1.5 A, 6 A, 500 mA 40W 3 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 27mm 150g - +70°C
RS Stock No. 667-5789
BrandRS PRO
TWD548.00
Each
units
5 V dc - 1A 5W 1 85 → 264 V ac, 110 → 370 V dc PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm 35g 72% +70°C
RS Stock No. 621-0590
Mfr. Part No.RS-35-12
BrandMean Well
TWD468.00
Each
units
12 V dc - 3A 36W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 99mm 82mm 36mm 300g 84.5% +70°C
RS Stock No. 705-9835
Mfr. Part No.SP-240-24RS
BrandMean Well
TWD2,451.00
Each
units
24 V dc - 10A 240W 1 88 → 264 V ac, 124 → 370 V dc Chassis Mount Enclosed 190mm 93mm 50mm 800g 87% +70°C
RS Stock No. 182-9975
Mfr. Part No.LPS42
TWD1,481.00
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. 644-8127
Mfr. Part No.SP-200-24
BrandMean Well
TWD2,686.00
Each
units
24 V dc - 8.4A 201.6W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 199mm 99mm 50mm 850g 83% +60°C
RS Stock No. 200-184
Mfr. Part No.NV1-453FF
BrandTDK-Lambda
TWD7,681.00
Each
units
3.3 V dc, 5 V dc - 1 A, 5 A, 15 A, 25 A 175W 4 90 → 264V ac Chassis Mount Open Frame 5in 3in 1.25in 250g - +70°C
RS Stock No. 629-5800
Mfr. Part No.NLP65-9612GJ
TWD2,655.00
Each
units
12 V dc - 5.4A 65W 1 85 → 264V ac Chassis Mount Open Frame 127mm 76.2mm 32mm 283g 72% +70°C
RS Stock No. 122-7169
Mfr. Part No.GSP500PS12-EF
BrandXP Power
TWD8,702.00
Each
units
12 V dc - 42A 500W 1 80 → 264V ac Chassis Mount Enclosed 170.4mm 101.6mm 41.9mm 900g - +70°C
RS Stock No. 621-0685
Mfr. Part No.RS-150-24
BrandMean Well
TWD898.00
Each
units
24 V dc - 6.5A 156W 1 88 → 132 V ac, 176 → 264 V ac, 248 → 373 V dc Chassis Mount Enclosed 199mm 98mm 38mm 700g 86% +70°C
RS Stock No. 413-594
Mfr. Part No.RT-65A
BrandMean Well
TWD725.00
Each
units
±12 V dc, ±5 V dc - 2.8 A, 6 A, 500 mA 66W 3 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 129mm 98mm 38mm 440g 77% +70°C
RS Stock No. 418-2336
Mfr. Part No.TXL 100-24S
BrandTRACOPOWER
TWD2,680.00
Each
units
24 V dc TXL 4.3A 103W 1 85 → 264V ac Chassis Mount Enclosed 208mm 95mm 38mm 800g 70 → 84% +70°C
RS Stock No. 122-7184
Mfr. Part No.SDS60US15
BrandXP Power
TWD1,628.00
Each
units
15 V dc - 4.2A 63W 1 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 127mm 76.2mm 30.5mm 240g 80% +70°C
RS Stock No. 621-0641
Mfr. Part No.RS-75-24
BrandMean Well
TWD621.00
Each
units
24 V dc - 3.2A 76.8W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 129mm 97mm 38mm 410g 88.5% +70°C