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. 200-213
Mfr. Part No.HWS1500-24/HD
BrandTDK-Lambda
SGD2,706.82
Each
units
24 V dc - 70A 1.5kW 1 85 → 265 V ac, 120 → 330 V dc Rack Mount Enclosed 11in 3.25in 5in 3.8kg 88% +71°C
RS Stock No. 813-9064
Mfr. Part No.HWS100A-24/A
BrandTDK-Lambda
SGD191.89
Each
units
24 V dc - 4.5A 100W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Enclosed 82mm 28mm 160mm 450g 89% +50°C
RS Stock No. 635-2199
Mfr. Part No.HWS600-24
BrandTDK-Lambda
SGD1,099.27
Each
units
24 V dc - 27A 648W 1 85 → 265 V ac, 120 → 330 V dc Chassis Mount Enclosed 6.5in 3.23in 3.94in 1.6kg 85% +70°C
RS Stock No. 680-2701
Mfr. Part No.LS25-12
BrandTDK-Lambda
SGD36.09
Each
units
12 V dc - 2.1A 25W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 3.1in 2in 1.1in 170g 83% +70°C
RS Stock No. 751-1239
Mfr. Part No.GWS500-24
BrandTDK-Lambda
SGD426.66
Each
units
24 V dc - 21A 504W 1 85 → 265 V ac, 120 → 373 V dc Chassis Mount Enclosed 218mm 105mm 41mm 1kg 90% +70°C
RS Stock No. 680-2691
Mfr. Part No.LS25-5
BrandTDK-Lambda
SGD42.01
Each
units
5 V dc - 5A 25W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 3.1in 2in 1.1in 170g 79% +70°C
RS Stock No. 477-0040
Mfr. Part No.RTW24-2R2C
BrandTDK-Lambda
SGD268.78
Each
units
24 V dc - 2.2A 52.8W 1 85 → 265V ac Chassis Mount Enclosed 4.88in 3.23in 0.87in 290g - +71°C
RS Stock No. 680-2827
Mfr. Part No.LS150-24
BrandTDK-Lambda
SGD73.71
Each
units
24 V dc - 6.5A 150W 1 248 → 273V dc Chassis Mount Enclosed 7.8in 3.9in 1.5in 700g 86% +70°C
RS Stock No. 680-2742
Mfr. Part No.LS50-12
BrandTDK-Lambda
SGD55.05
Each
units
12 V dc - 4.2A 50W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 3.9in 3.8in 1.4in 350g 84% +70°C
RS Stock No. 377-0746
Mfr. Part No.ZWQ130-5225/A
BrandTDK-Lambda
SGD354.85
Each
units
±12 V dc, 5 V dc - 4 A, 10 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. 177-854
Mfr. Part No.HWS1500-12
BrandTDK-Lambda
SGD2,143.81
Each
units
12 V dc - 125A 1.5kW 1 85 → 265 V ac, 120 → 330 V dc Chassis Mount Enclosed 11in 3.25in 5in 3.8kg 85% +70°C
RS Stock No. 680-2754
Mfr. Part No.LS50-24
BrandTDK-Lambda
SGD44.82
Each
units
24 V dc - 2.2A 50W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 3.9in 3.8in 1.4in 350g 86% +70°C
RS Stock No. 377-0768
Mfr. Part No.ZWQ130-5224/A
BrandTDK-Lambda
SGD420.97
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. 635-2177
Mfr. Part No.HWS300-24
BrandTDK-Lambda
SGD654.69
Each
units
24 V dc - 14A 336W 1 85 → 265 V ac, 120 → 330 V dc Chassis Mount Enclosed 6.5in 3.23in 2.4in 1kg 85% +70°C
RS Stock No. 177-860
Mfr. Part No.HWS1500-24
BrandTDK-Lambda
SGD2,189.99
Each
units
24 V dc - 70A 1.5kW 1 85 → 265 V ac, 120 → 330 V dc Chassis Mount Enclosed 11in 3.25in 5in 3.8kg 88% +70°C
RS Stock No. 680-2802
Mfr. Part No.LS100-24
BrandTDK-Lambda
SGD68.31
Each
units
24 V dc - 4.5A 100W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 6.3in 3.8in 1.5in 600g 86% +70°C
RS Stock No. 680-2837
Mfr. Part No.SWS600L-24
BrandTDK-Lambda
SGD457.06
Each
units
24 V dc - 27A 648W 1 85 → 265 V ac, 120 → 350 V dc Chassis Mount Enclosed 215mm 120mm 61mm 1.6kg - +74°C
RS Stock No. 813-9070
Mfr. Part No.HWS150A-12/A
BrandTDK-Lambda
SGD228.20
Each
units
12 V dc - 13A 150W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Enclosed 82mm 37mm 160mm 500g 90% +50°C
RS Stock No. 813-9128
Mfr. Part No.RWS300B-24
BrandTDK-Lambda
SGD179.90
Each
units
24 V dc - 12.5A 300W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Enclosed 41mm 102mm 170mm 900g 85 %, 88 % +70°C
RS Stock No. 680-2815
Mfr. Part No.LS150-12
BrandTDK-Lambda
SGD68.63
Each
units
12 V dc - 12.5A 150W 1 76 → 264 V ac, 88 → 132 V ac, 248 → 273 V dc Chassis Mount Enclosed 7.8in 3.9in 1.5in 700g 83% +70°C