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. 122-7713
Mfr. Part No.ECL10US05-T
BrandXP Power
$39.65
Each
units
5 V dc - 2A 10W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 65mm 25.4mm 18.5mm 26g 75% +70°C
RS Stock No. 705-9822
Mfr. Part No.SP-240-12RS
BrandMean Well
$251.43
Each
units
12 V dc - 20A 240W 1 88 → 264 V ac, 124 → 370 V dc Chassis Mount Enclosed 190mm 93mm 50mm 800g 86% +70°C
RS Stock No. 771-0754
Mfr. Part No.LFMWLT40-3002
BrandEOS
$114.12
Each
units
5.2 V dc, 14.6 V dc - 1.5 A, 6 A, 500 mA 40W 3 90 → 264V ac Chassis Mount Open Frame 101.6mm 50.8mm 30.48mm 150g - +70°C
RS Stock No. 418-2241
Mfr. Part No.TXL 070-24S
BrandTRACOPOWER
$108.60
Each
units
24 V dc - 3A 70W 1 85 → 264 V ac, 120 → 375 V dc Chassis Mount Enclosed 169mm 95mm 38mm 700g 70 → 84% +70°C
RS Stock No. 193-367
Mfr. Part No.RAC10-12SB
BrandRecom
$77.21
Each
units
12 V dc - 833mA 10W 1 90 → 264V ac PCB Mount Encapsulated 52.4mm 26.8mm 23.5mm 51g 82% +70°C
RS Stock No. 106-5886
Mfr. Part No.HEP-185-24A
BrandMean Well
$253.85
Each
units
24 V dc - 7.8A 187W 1 90 → 305 V ac, 127 → 431 V dc Chassis Mount Enclosed 228mm 68mm 38.8mm 1.2kg 93.5% +70°C
RS Stock No. 131-959
Mfr. Part No.TMT 15215C
BrandTRACOPOWER
$153.87
Each
units
±15 V dc - 500mA 15W 2 85 → 264 V ac, 85 → 370 V dc Chassis Mount Encapsulated 77mm 45mm 26.4mm 90g - +50°C
RS Stock No. 833-7439
Mfr. Part No.MPB125-2012G
$224.70
Each
units
12 V dc - 10.5 A, 500 mA 125W 2 90 → 264V ac Chassis Mount Open Frame 127mm 76.2mm 26.9mm 300g 85% +50°C
RS Stock No. 706-5950
Mfr. Part No.TIW 12-124
BrandTRACOPOWER
$75.87
Each
units
24 V dc - 500mA 12W 1 93 → 264V ac Surface Mount Encapsulated 50.2mm 48mm 23.6mm 80g 80% +50°C
RS Stock No. 431-8169
Mfr. Part No.VP150-1 12V
BrandEplax
$929.60
Each
units
15 V dc - 10A 150W 1 94 → 253V ac Rack Mount Enclosed 162mm 110mm 60.6mm 1.1kg 87% +70°C
RS Stock No. 192-1122
Mfr. Part No.LPT25
$118.36
Each
units
±15 V dc, 5 V dc - 2 A, 4 A, 700 mA 25W 3 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 667-5786
BrandRS PRO
$27.96
Each
units
12 V dc - 420mA 5W 1 85 → 264 V ac, 110 → 370 V dc PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm 35g 76% +70°C
RS Stock No. 192-1223
Mfr. Part No.LPS253-C
$422.52
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. 706-6319
Mfr. Part No.TXH 240-124
BrandTRACOPOWER
$249.98
Each
units
24 V dc - 10A 240W 1 90 → 264 V ac, 120 → 370 V dc Rack Mount Enclosed 150mm 106mm 35mm 580g 92% +70°C
RS Stock No. 819-3618
Mfr. Part No.LPS363-M
$305.88
Each
units
12 V dc - 30A 240W 1 90 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 34.83mm 340g - +50°C
RS Stock No. 106-5867
Mfr. Part No.LRS-350-12RS
BrandMean Well
$73.57
Each
units
12 V dc - 29A 348W 1 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc Chassis Mount Enclosed 215mm 115mm 30mm 760g 85% +70°C
RS Stock No. 424-471
Mfr. Part No.HRP-150-12
BrandMean Well
$121.03
Each
units
12 V dc - 13A 156W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 159mm 97mm 38mm 610g 88% +70°C
RS Stock No. 843-1770
Mfr. Part No.TPP 65-124
BrandTRACOPOWER
$168.35
Each
units
24 V dc - 2.71A 65W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Encapsulated - - - - - +60°C
RS Stock No. 644-8060
Mfr. Part No.RD-125B
BrandMean Well
$82.13
Each
units
5 V dc, 24 V dc - 4.6A 133W 2 88 → 132 V ac, 176 → 264 V ac, 248 → 373 V dc Chassis Mount Enclosed 199mm 98mm 38mm 700g 85% +70°C
RS Stock No. 489-8687
Mfr. Part No.PBA150F-24-N
BrandCosel
$249.01
Each
units
24 V dc - 6.5A 156W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 168mm 93mm 34mm 560g 85 %, 88 % +71°C
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