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. 621-0635
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. 177-860
Mfr. Part No.HWS1500-24
BrandTDK-Lambda
MYR5,791.07
Each
units
24V dc - 70A 1.5kW 1 120 → 330 V dc, 85 → 265 V ac Chassis Mount Enclosed 11in 3.25in 5in 3.8kg 88% +70°C
RS Stock No. 635-2177
Mfr. Part No.HWS300-24
BrandTDK-Lambda
MYR1,635.64
Each
units
24V dc - 14A 336W 1 120 → 330 V dc, 85 → 265 V ac Chassis Mount Enclosed 6.5in 3.23in 2.4in 1kg 85% +70°C
RS Stock No. 183-0004
Mfr. Part No.LPS45
MYR247.20
Each
units
24V dc - 2.3A 40W 1 120 → 300 V dc, 85 → 264 V ac Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°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. 756-3959
Mfr. Part No.6EP1331-1LD00
BrandSiemens
MYR195.23
Each
units
24V dc - 2.1A 50W 1 85 → 264V ac Chassis Mount Enclosed 128mm 97mm 38mm 350g 86% +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. 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. 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. 777-5098
Mfr. Part No.ZWS15B-24
BrandTDK-Lambda
MYR143.15
Each
units
24V dc - 700mA 16.8W 1 120 → 370 V dc, 85 → 265 V ac Chassis Mount Open Frame 87.5mm 50mm 22mm 55g 85% +70°C
RS Stock No. 753-8032
Mfr. Part No.O/P 1
BrandVox Power
MYR372.67
Each
units
1.5 → 7.5V O/P 1 25A 125W 1 - Rack Mount Open Frame 60mm 35mm 17mm 60g - +85°C
RS Stock No. 833-8148
Mfr. Part No.MAP55-1024
MYR1,736.35
Each
units
24V dc - 2.5A 55W 1 175 → 264 V ac, 90 → 132 V ac U Bracket U Bracket 152.4mm 83.1mm 40.6mm 550g 73 (Min.)% +70°C
RS Stock No. 408-4298
Mfr. Part No.V6FFS 24V25A
BrandTDK-Lambda
MYR2,565.38
Each
units
24V dc - 25A 650W 1 130 → 330 V dc, 90 → 264 V ac Chassis Mount Enclosed 268.4mm 127mm 63.5mm 2kg 75% +50°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. 833-8145
Mfr. Part No.MAP55-1012
MYR1,736.35
Each
units
12V dc - 5A 55W 1 175 → 264 V ac, 90 → 132 V ac U Bracket U Bracket 152.4mm 83.1mm 40.6mm 550g 73 (Min.)% +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. 848-1870
Mfr. Part No.GLC65BG
MYR903.23
Each
units
5.1 V dc, ±12 V dc - - 60W 3 90 → 264V ac Chassis Mount Open Frame - - - - - -
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. 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. 106-5852
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
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