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. 183-0010
Mfr. Part No.LPT42
TWD1,503.00
Each
units
±12 V dc, 5 V dc - 2.5 A, 5 A, 700 mA 40W 3 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS Stock No. 815-7393
Mfr. Part No.MSP-600-12
BrandMean Well
TWD5,996.00
Each
units
12 V dc - 53A 636W 1 85 → 264 V ac, 120 → 370 V dc Rack Mount Enclosed 218mm 105mm 63.5mm 1.6kg - +70°C
RS Stock No. 455-7689
Mfr. Part No.LPT42-M
TWD2,031.00
Each
units
±12 V dc, 5 V dc - 2.5 A, 5 A, 700 mA 40W 3 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g - +50°C
RS Stock No. 739-8010
Mfr. Part No.ZWS-150BAF-24
BrandTDK-Lambda
TWD3,434.00
Each
units
24 V dc - 6.3A 151W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Open Frame 188mm 47mm 85mm 390g 90% +70°C
RS Stock No. 489-8586
Mfr. Part No.PBA50F-24-N
BrandCosel
TWD2,957.00
Each
units
24 V dc - 2.2A 52.8W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 136.5mm 82.5mm 34.5mm 280g 84% +71°C
RS Stock No. 777-5063
Mfr. Part No.ZWS10B-5
BrandTDK-Lambda
TWD922.00
Each
units
5 V dc - 2A 10W 1 85 → 265 V ac, 120 → 370 V dc Chassis Mount Open Frame 73.5mm 55mm 22mm 45g 78% +70°C
RS Stock No. 898-7223
Mfr. Part No.VS100E-24/A
BrandTDK-Lambda
TWD1,418.00
Each
units
24 V dc - 4.3A 103W 1 85 → 132 V ac, 110 → 175 V dc Chassis Mount Enclosed 185mm 72mm 45mm 290g 86% +70°C
RS Stock No. 621-0584
Mfr. Part No.RS-25-24
BrandMean Well
TWD356.00
Each
units
24 V dc - 1.1A 26W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 78mm 51mm 28mm 200g 86% +70°C
RS Stock No. 192-1267
Mfr. Part No.LPS255-C
TWD10,514.00
Each
units
24 V dc - 10.4A 250W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Enclosed 262mm 127mm 76.2mm 1.2kg 75% +50°C
RS Stock No. 627-3838
Mfr. Part No.XG4
BrandExcelsys
TWD5,937.00
Each
units
30 V dc - 10A 240W 1 85 → 264 V ac, 120 → 380 V dc Chassis Mount Enclosed 269.75mm 127mm 40.4mm 100g 90% +70°C
RS Stock No. 813-9070
Mfr. Part No.HWS-150A-12/A
BrandTDK-Lambda
TWD4,818.00
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. 183-0076
Mfr. Part No.LPS63
TWD1,953.00
Each
units
12 V dc - 5A 60W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 42.9mm 340g 70% +50°C
RS Stock No. 644-8177
Mfr. Part No.SP-320-24
BrandMean Well
TWD3,325.00
Each
units
24 V dc - 13A 312W 1 88 → 264 V ac, 124 → 370 V dc Chassis Mount Enclosed 215mm 115mm 50mm 1.1kg 87% +65°C
RS Stock No. 200-190
Mfr. Part No.NV1-453TT
BrandTDK-Lambda
TWD7,681.00
Each
units
3.3 V dc, 5 V dc - 1 A, 5 A, 15 A, 25 A 175W 4 90 → 264V ac Chassis Mount Open Frame 5in 3in 1.25in 250g - +70°C
RS Stock No. 786-4729
BrandRS PRO
TWD434.00
Each
units
5 V dc - 1A 5W 1 85 → 264 V ac, 100 → 400 V dc PCB Mount Encapsulated 42mm 11mm 24mm 10g 70% +85°C
RS Stock No. 122-7189
Mfr. Part No.SDS60UT06
BrandXP Power
TWD1,894.00
Each
units
±12 V dc, ±5 V dc - 3 A, 6 A, 800 mA 63W 3 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 127mm 76.2mm 30.5mm 240g 80% +70°C
RS Stock No. 418-2291
Mfr. Part No.TXL 060-0533TI
BrandTRACOPOWER
TWD2,971.00
Each
units
±15 V dc, 5 V dc - 1 A, 3 A, 7 A 60W 3 85 → 264 V ac, 120 → 375 V dc Chassis Mount Enclosed 169mm 95mm 38mm 700g 70 → 84% +70°C
RS Stock No. 655-8482
Mfr. Part No.PPS-125-12
BrandMean Well
TWD2,332.00
Each
units
12 V dc - 8.5A 102W 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Open Frame 127mm 76.2mm 34.6mm 370g 80% +70°C
RS Stock No. 848-1949
Mfr. Part No.GLM65BG
TWD5,232.00
Each
units
±15 V dc, 5.1 V dc - - 60W 1 90 → 264V ac Chassis Mount Open Frame - - - - - -
RS Stock No. 122-7058
Mfr. Part No.ECM100UT33
BrandXP Power
TWD4,481.00
Each
units
±15 V dc, 5 V dc - 3 A, 10 A, 800 mA 100W 3 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 114.3mm 63.5mm 27mm 180g - +70°C