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 Input Voltage Number of Outputs Mounting Type Package Type Length Width Depth Ripple And Noise Load Regulation Weight
RS Stock No. 106-5846
Mfr. Part No.LRS-100-24RS
BrandMean Well
$2.68
Each
units
24 V dc - 4.5A 108W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 129mm 97mm 30mm - - 340g
RS Stock No. 621-0685
Mfr. Part No.RS-150-24
BrandMean Well
MYR145.66
Each
units
24 V dc - 6.5A 156W 88 → 132 V ac, 176 → 264 V ac, 248 → 373 V dc 1 Chassis Mount Enclosed 199mm 98mm 38mm - - 700g
RS Stock No. 106-5832
Mfr. Part No.LRS-50-24RS
BrandMean Well
MYR67.34
Each
units
24 V dc - 2.2A 52.8W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 621-0613
Mfr. Part No.RS-50-24
BrandMean Well
MYR84.37
Each
units
24 V dc - 2.2A 52.8W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 99mm 97mm 36mm - - 410g
RS Stock No. 338-1728
Mfr. Part No.JWS300-24
BrandTDK-Lambda
MYR2,043.33
Each
units
24 V dc - 14A 336W 85 → 265 V ac, 120 → 330 V dc 1 Chassis Mount Enclosed 190mm 92mm 120mm - - 1.9kg
RS Stock No. 106-5869
Mfr. Part No.LRS-350-24RS
BrandMean Well
MYR175.09
Each
units
24 V dc - 14.6A 350W 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc 1 Chassis Mount Enclosed 215mm 115mm 30mm - - 760g
RS Stock No. 770-3242
Mfr. Part No.TXM 015-112
BrandTRACOPOWER
MYR105.22
Each
units
12 V dc - 1.3A 15W 90 → 264V ac 1 Chassis Mount Enclosed 79mm 51mm 29mm - - 165g
RS Stock No. 813-9058
Mfr. Part No.HWS-100A-5/A
BrandTDK-Lambda
MYR513.99
Each
units
5 V dc - 20A 100W 85 → 265 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 82mm 28mm 160mm - - 450g
RS Stock No. 183-0010
Mfr. Part No.LPT42
MYR193.12
Each
units
5/±12 V dc - 2.5 A, 5 A, 700 mA 40W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 278-6223
Mfr. Part No.JWS50-12/A
BrandTDK-Lambda
MYR629.63
Each
units
12 V dc - 4.3A 51.6W 85 → 265 V ac, 120 → 330 V dc 1 Chassis Mount Enclosed 159mm 85mm 37mm - - 350g
RS Stock No. 466-6878
Mfr. Part No.TXL 035-1515D
BrandTRACOPOWER
MYR378.91
Each
units
±15 V dc - 1.5 A, 2.4 A 35W 85 → 264V ac 2 Chassis Mount Enclosed 109mm 82mm 35mm - - 300g
RS Stock No. 756-3959
Mfr. Part No.6EP1331-1LD00
BrandSiemens
MYR202.38
Each
units
24 V dc - 2.1A 50W 85 → 264V ac 1 Chassis Mount Enclosed 128mm 97mm 38mm - - 350g
RS Stock No. 644-7073
Mfr. Part No.RD-35A
BrandMean Well
MYR102.10
Each
units
5/12 V dc - 1 A, 4 A 32W 88 → 264 V ac, 125 → 373 V dc 2 Chassis Mount Enclosed 99mm 82mm 36mm - - 300g
RS Stock No. 106-5836
Mfr. Part No.LRS-75-12RS
BrandMean Well
MYR85.84
Each
units
12 V dc - 6A 72W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 99mm 97mm 30mm - - 300g
RS Stock No. 621-0635
Mfr. Part No.RS-75-12
BrandMean Well
MYR110.26
Each
units
12 V dc - 6A 72W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 129mm 97mm 38mm - - 410g
RS Stock No. 183-0004
Mfr. Part No.LPS45
MYR266.30
Each
units
24 V dc - 2.3A 40W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 177-860
Mfr. Part No.HWS1500-24
BrandTDK-Lambda
MYR5,150.83
Each
units
24 V dc - 70A 1.5kW 85 → 265 V ac, 120 → 330 V dc 1 Chassis Mount Enclosed 11in 3.25in 5in - - 3.8kg
RS Stock No. 635-2177
Mfr. Part No.HWS300-24
BrandTDK-Lambda
MYR1,863.14
Each
units
24 V dc - 14A 336W 85 → 265 V ac, 120 → 330 V dc 1 Chassis Mount Enclosed 6.5in 3.23in 2.4in - - 1kg
RS Stock No. 678-3748
Mfr. Part No.RS-15-15
BrandMean Well
MYR57.44
Each
units
15 V dc - 1A 15W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 62.5mm 51mm 28mm - - 130g
RS Stock No. 777-5098
Mfr. Part No.ZWS15B-24
BrandTDK-Lambda
MYR247.89
Each
units
24 V dc - 700mA 16.8W 85 → 265 V ac, 120 → 370 V dc 1 Chassis Mount Open Frame 87.5mm 50mm 22mm - - 55g
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