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. 413-673
Mfr. Part No.RS-15-5
BrandMean Well
MYR66.85
Each
units
5 V dc - 3A 15W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 62.5mm 51mm 28mm 130g 77% +70°C
RS Stock No. 753-7694
Mfr. Part No.MPS-65-12
BrandMean Well
MYR313.99
Each
units
12 V dc - 5.2A 62W 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Open Frame 127mm 76mm 42mm 230g - +60°C
RS Stock No. 813-9128
Mfr. Part No.RWS300B-24
BrandTDK-Lambda
MYR802.18
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. 621-0629
Mfr. Part No.RS-50-12
BrandMean Well
MYR108.73
Each
units
12 V dc - 4.2A 50W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 99mm 97mm 36mm 410g 84.5% +70°C
RS Stock No. 898-7227
Mfr. Part No.VS150E-12/A
BrandTDK-Lambda
MYR311.81
Each
units
12 V dc - 12.5A 150W 1 85 → 132 V ac, 110 → 175 V dc Chassis Mount Enclosed 188mm 85mm 47mm 390g 87% +70°C
RS Stock No. 739-8001
Mfr. Part No.ZWS100BAF-12
BrandTDK-Lambda
MYR468.86
Each
units
12 V dc - 8.5A 102W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Open Frame 185mm 45mm 72mm 290g 88% +70°C
RS Stock No. 764-6943
Mfr. Part No.RSP-2000-12
BrandMean Well
MYR1,846.78
Each
units
12 V dc - 100A 1.2kW 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Enclosed 295mm 127mm 41mm 2kg 86% +70°C
RS Stock No. 777-5127
Mfr. Part No.ZWS240BP-24
BrandTDK-Lambda
MYR1,100.92
Each
units
24 V dc - 10A 240W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Open Frame 180mm 84mm 42mm 520g 91% +70°C
RS Stock No. 338-1784
Mfr. Part No.JWT75-5FF/A
BrandTDK-Lambda
MYR1,456.25
Each
units
±15 V dc, 5 V dc - 3.2 A, 8 A, 500 mA 75W 3 85 → 265 V ac, 120 → 330 V dc Chassis Mount Enclosed 188mm 92mm 42mm 600g 72% +50°C
RS Stock No. 200-314
Mfr. Part No.HWS300-24/HD
BrandTDK-Lambda
MYR2,207.86
Each
units
24 V dc - 14A 336W 1 85 → 265 V ac, 120 → 330 V dc Rack Mount Enclosed 6.5in 3.23in 2.4in 1kg 85% +71°C
RS Stock No. 833-8104
Mfr. Part No.MAP130-4001
MYR3,095.47
Each
units
±12 V dc, ±24 V dc, 5 V dc - 1 A, 3.5 A, 20 A 130W 4 90 → 132 V ac, 175 → 264 V ac U Bracket U Bracket 215.9mm 114.3mm 50.8mm 1.1kg 80% +70°C
RS Stock No. 680-2701
Mfr. Part No.LS25-12
BrandTDK-Lambda
MYR80.26
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. 106-5844
Mfr. Part No.LRS-100-12
BrandMean Well
MYR95.18
Each
units
12 V dc - 8.5A 102W 1 85 → 264 V ac, 120 → 373 V dc Chassis Mount Enclosed 129mm 97mm 30mm 340g 88% +70°C
RS Stock No. 644-7219
Mfr. Part No.RPT-60B
BrandMean Well
MYR102.04
Each
units
±12 V dc, 5 V dc - 2 A, 4 A, 500 mA 50W 3 90 → 264 V ac, 127 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 29mm 150g - +65°C
RS Stock No. 418-2409
Mfr. Part No.TXL 100-0534TI
BrandTRACOPOWER
MYR603.76
Each
units
5 V dc, 12 V dc, 24 V dc - 2 A, 4 A, 12 A 100W 3 85 → 264V ac Chassis Mount Enclosed 208mm 95mm 38mm 800g 70 → 84% +70°C
RS Stock No. 192-1071
Mfr. Part No.LPS25
MYR242.84
Each
units
24 V dc - 1.8A 25W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 680-2798
Mfr. Part No.LS100-12
BrandTDK-Lambda
MYR210.83
Each
units
12 V dc - 8.5A 100W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 6.3in 3.8in 1.5in 600g 82% +70°C
RS Stock No. 635-2199
Mfr. Part No.HWS600-24
BrandTDK-Lambda
MYR3,605.64
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. 680-2802
Mfr. Part No.LS100-24
BrandTDK-Lambda
MYR215.33
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. 678-3805
Mfr. Part No.SP-100-13.5
BrandMean Well
MYR311.65
Each
units
13.5 V dc - 7.5A 101W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 179mm 99mm 45mm 660g 80% +60°C