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
SGD2,545.83
Each
units
24V dc - 70A 1.5kW 1 120 → 330 V dc, 85 → 265 V ac Rack Mount Enclosed 11in 3.25in 5in 3.8kg 88% +71°C
RS Stock No. 813-9064
Mfr. Part No.HWS-100A-24/A
BrandTDK-Lambda
SGD176.16
Each
units
24V dc - 4.5A 100W 1 120 → 370 V dc, 85 → 265 V ac Chassis Mount Enclosed 82mm 28mm 160mm 450g 89% +50°C
RS Stock No. 635-2199
Mfr. Part No.HWS600-24
BrandTDK-Lambda
SGD1,019.72
Each
units
24V dc - 27A 648W 1 120 → 330 V dc, 85 → 265 V ac 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
SGD33.57
Each
units
12V dc - 2.1A 25W 1 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 3.1in 2in 1.1in 170g 83% +70°C
RS Stock No. 751-1239
Mfr. Part No.GWS500-24
BrandTDK-Lambda
SGD462.81
Each
units
24V dc - 21A 504W 1 120 → 373 V dc, 85 → 265 V ac Chassis Mount Enclosed 218mm 105mm 41mm 1kg 90% +70°C
RS Stock No. 278-6302
Mfr. Part No.JWS100-24/A
BrandTDK-Lambda
SGD385.03
Each
units
24V dc - 4.5A 108W 1 120 → 330 V dc, 85 → 265 V ac Chassis Mount Enclosed 188mm 92mm 50mm 650g 79% +60°C
RS Stock No. 680-2691
Mfr. Part No.LS25-5
BrandTDK-Lambda
SGD37.68
Each
units
5V dc - 5A 25W 1 125 → 373 V dc, 88 → 264 V ac Chassis Mount Enclosed 3.1in 2in 1.1in 170g 79% +70°C
RS Stock No. 259-855
Mfr. Part No.JWS 150 24A HFP
BrandTDK-Lambda
SGD522.75
Each
units
24V dc - 6.5A 150W 1 120 → 330 V dc, 85 → 265 V ac Chassis Mount Enclosed 198mm 92mm 65mm 850g 80% +60°C
RS Stock No. 477-0040
Mfr. Part No.RTW24-2R2C
BrandTDK-Lambda
SGD254.91
Each
units
24V 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
SGD75.93
Each
units
24V 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
SGD47.20
Each
units
12V dc - 4.2A 50W 1 125 → 373 V dc, 88 → 264 V ac 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
SGD333.27
Each
units
5 V dc, ±12 V dc - 4 A, 10 A, 15 A 130W 4 120 → 370 V dc, 85 → 265 V ac Chassis Mount Open Frame 225mm 35mm 106mm 730g 72% +70°C
RS Stock No. 635-2177
Mfr. Part No.HWS300-24
BrandTDK-Lambda
SGD607.31
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. 177-860
Mfr. Part No.HWS1500-24
BrandTDK-Lambda
SGD2,031.52
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. 177-854
Mfr. Part No.HWS1500-12
BrandTDK-Lambda
SGD1,966.98
Each
units
12V dc - 125A 1.5kW 1 120 → 330 V dc, 85 → 265 V ac Chassis Mount Enclosed 11in 3.25in 5in 3.8kg 85% +70°C
RS Stock No. 680-2754
Mfr. Part No.LS50-24
BrandTDK-Lambda
SGD41.72
Each
units
24V dc - 2.2A 50W 1 125 → 373 V dc, 88 → 264 V ac 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
SGD390.49
Each
units
5 V dc, ±12 V dc, ±24 V dc - 2 A, 4 A, 15 A 130W 4 120 → 370 V dc, 85 → 265 V ac Chassis Mount Open Frame 225mm 35mm 106mm 730g 72% +70°C
RS Stock No. 680-2802
Mfr. Part No.LS100-24
BrandTDK-Lambda
SGD63.56
Each
units
24V dc - 4.5A 100W 1 125 → 373 V dc, 88 → 264 V ac 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
SGD468.93
Each
units
24V dc - 27A 648W 1 120 → 350 V dc, 85 → 265 V ac Chassis Mount Enclosed 215mm 120mm 61mm 1.6kg - +74°C
RS Stock No. 813-9070
Mfr. Part No.HWS-150A-12/A
BrandTDK-Lambda
SGD221.96
Each
units
12V dc - 13A 150W 1 120 → 370 V dc, 85 → 265 V ac Chassis Mount Enclosed 82mm 37mm 160mm 500g 90% +50°C