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. 106-5846
Mfr. Part No.LRS-100-24
BrandMean Well
MYR69.80
Each
units
24V dc - 4.5A 108W 1 120 → 373 V dc, 85 → 264 V ac Chassis Mount Enclosed 129mm 97mm 30mm 340g 90% +70°C
RS Stock No. 621-0685
Mfr. Part No.RS-150-24
BrandMean Well
MYR138.46
Each
units
24V dc - 6.5A 156W 1 176 → 264 V ac, 248 → 373 V dc, 88 → 132 V ac Chassis Mount Enclosed 199mm 98mm 38mm 700g 86% +70°C
RS Stock No. 106-5832
Mfr. Part No.LRS-50-24
BrandMean Well
MYR57.16
Each
units
24V dc - 2.2A 52.8W 1 120 → 373 V dc, 85 → 264 V ac Chassis Mount Enclosed 99mm 82mm 30mm 230g 88% +70°C
RS Stock No. 621-0613
Mfr. Part No.RS-50-24
BrandMean Well
MYR92.95
Each
units
24V dc - 2.2A 52.8W 1 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 99mm 97mm 36mm 410g 88% +70°C
RS Stock No. 106-5869
Mfr. Part No.LRS-350-24RS
BrandMean Well
MYR171.76
Each
units
24V dc - 14.6A 350W 1 180 → 264 (By Switch) V ac, 240 → 370 V dc, 90 → 132 V ac Chassis Mount Enclosed 215mm 115mm 30mm 760g 88% +70°C
RS Stock No. 106-5836
Mfr. Part No.LRS-75-12
BrandMean Well
MYR80.32
Each
units
12V dc - 6A 72W 1 120 → 373 V dc, 85 → 264 V ac Chassis Mount Enclosed 99mm 97mm 30mm 300g 89% +70°C
RS Stock No. 644-7073
Mfr. Part No.RD-35A
BrandMean Well
MYR112.37
Each
units
5 V dc, 12 V dc - 1 A, 4 A 32W 2 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 99mm 82mm 36mm 300g - +70°C
RS Stock No. 621-0635
Mfr. Part No.RS-75-12
BrandMean Well
MYR121.40
Each
units
12V dc - 6A 72W 1 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 129mm 97mm 38mm 410g 84.5% +70°C
RS Stock No. 678-3748
Mfr. Part No.RS-15-15
BrandMean Well
MYR43.90
Each
units
15V dc - 1A 15W 1 120 → 370 V dc, 85 → 264 V ac Chassis Mount Enclosed 62.5mm 51mm 28mm 130g 81% +70°C
RS Stock No. 106-5850
Mfr. Part No.LRS-150F-12RS
BrandMean Well
MYR111.80
Each
units
12V dc - 12.5A 150W 1 120 → 370 V dc, 85 → 264 V ac Chassis Mount Enclosed 159mm 97mm 30mm 480g 87.5% +70°C
RS Stock No. 413-605
Mfr. Part No.RS-15-24
BrandMean Well
MYR43.90
Each
units
24V dc - 625mA 15W 1 120 → 370 V dc, 85 → 264 V ac Chassis Mount Enclosed 62.5mm 51mm 28mm 130g 82% +70°C
RS Stock No. 621-0679
Mfr. Part No.RS-100-24
BrandMean Well
MYR165.00
Each
units
24V dc - 4.5A 108W 1 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 159mm 97mm 38mm 600g 84% +70°C
RS Stock No. 815-7472
Mfr. Part No.RSP-500-24RS
BrandMean Well
MYR459.53
Each
units
24V dc - 21A 504W 1 120 → 370 V dc, 85 → 264 V ac Chassis Mount Enclosed 230mm 127mm 40.5mm 1.3kg 89% +70°C
RS Stock No. 106-5825
Mfr. Part No.LRS-35-24
BrandMean Well
MYR58.84
Each
units
24V dc - 1.5A 36W 1 120 → 373 V dc, 85 → 264 V ac Chassis Mount Enclosed 99mm 82mm 30mm 230g 88% +70°C
RS Stock No. 106-5852
Mfr. Part No.LRS-150F-24RS
BrandMean Well
MYR118.61
Each
units
24V dc - 6.5A 156W 1 120 → 370 V dc, 85 → 264 V ac Chassis Mount Enclosed 159mm 97mm 30mm 480g 89% +70°C
RS Stock No. 644-7067
Mfr. Part No.RD-50A
BrandMean Well
MYR128.81
Each
units
5 V dc, 12 V dc - 2 A, 6 A 54W 2 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 99mm 97mm 36mm 410g 79% +70°C
RS Stock No. 106-5824
Mfr. Part No.LRS-35-15RS
BrandMean Well
MYR62.58
Each
units
15V dc - 2.4A 36W 1 120 → 373 V dc, 85 → 264 V ac Chassis Mount Enclosed 99mm 82mm 30mm 230g 86% +70°C
RS Stock No. 621-0584
Mfr. Part No.RS-25-24
BrandMean Well
MYR55.11
Each
units
24V dc - 1.1A 26W 1 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 78mm 51mm 28mm 200g 86% +70°C
RS Stock No. 644-7118
Mfr. Part No.RD-85A
BrandMean Well
MYR181.43
Each
units
5 V dc, 12 V dc - 4 A, 8 A 88W 2 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 159mm 97mm 38mm 600g 78% +70°C
RS Stock No. 770-4049
Mfr. Part No.RSP-320-5RS
BrandMean Well
MYR288.59
Each
units
5V dc - 60A 300W 1 124 → 370 V dc, 88 → 264 V ac Chassis Mount Enclosed 215mm 115mm 30mm 900g 85% +70°C