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. 667-5789
BrandRS PRO
MYR74.97
Each
units
5V dc - 1A 5W 110 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm - - 35g
RS Stock No. 828-0166
BrandRS PRO
MYR304.62
Each
units
12V dc - 5A 60W 100 → 240V ac 8 Cable Enclosed 187.2mm 122.2mm 89.9mm - - <800g
RS Stock No. 181-3235
BrandRS PRO
MYR1,494.65
1 Tube of 13
Tube(s)
3.3V dc - 900mA 3W 120 → 370 V dc, 90 → 264 V ac 1 Through Hole Encapsulated 35.7mm 19mm 25mm - - 27.5g
RS Stock No. 161-8232
BrandRS PRO
MYR905.95
Each
units
24V dc - 22A 480W 90 → 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - 8.7kg
RS Stock No. 161-8281
BrandRS PRO
MYR68.69
Each
units
24V dc - 2.2A 52.8W 100 → 240V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 161-8270
BrandRS PRO
MYR267.40
Each
units
24V dc - 8.4A 200W 90 → 264V ac 1 Chassis Mount Enclosed 200mm 99mm 38mm - - -
RS Stock No. 771-9354
BrandRS PRO
MYR32.95
Each
units
5V dc - 200mA 1W 100 → 400 V dc, 85 → 264 V ac 1 PCB Mount Miniature 35mm 24mm 11mm - - -
RS Stock No. 181-2195
BrandRS PRO
MYR34.71
Each
units
15V dc - 400mA 6W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm - - 31g
RS Stock No. 161-8298
BrandRS PRO
MYR114.89
Each
units
15V dc - - 150W 170 → 264 V ac, 85 → 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 161-8238
BrandRS PRO
MYR740.61
Each
units
48V dc - 10.5A 504W 88 → 264V ac 1 Chassis Mount Enclosed 183mm 120mm 83.5mm - - -
RS Stock No. 828-0194
BrandRS PRO
MYR438.29
Each
units
27.6V dc - 2.5A 70W 195 → 253V ac 1 Wall Mount Enclosed 310mm 240mm 80mm - - 1kg
RS Stock No. 771-9382
BrandRS PRO
MYR49.31
Each
units
9V dc - 111mA 1W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 161-8297
BrandRS PRO
MYR114.89
Each
units
12V dc - 12.5A 150W 170 → 264 V ac, 85 → 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 161-8280
BrandRS PRO
MYR68.26
Each
units
15V dc - - 51W 100 → 240V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 181-2194
BrandRS PRO
MYR29.05
Each
units
12V dc - 250mA 3W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 37mm 24.5mm 18mm - - 25g
RS Stock No. 106-5846
Mfr. Part No.LRS-100-24RS
BrandMean Well
MYR82.70
Each
units
24V dc - 4.5A 108W 120 → 373 V dc, 85 → 264 V ac 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
24V dc - 6.5A 156W 176 → 264 V ac, 248 → 373 V dc, 88 → 132 V ac 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
24V dc - 2.2A 52.8W 120 → 373 V dc, 85 → 264 V ac 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
24V dc - 2.2A 52.8W 125 → 373 V dc, 88 → 264 V ac 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
24V dc - 14A 336W 120 → 330 V dc, 85 → 265 V ac 1 Chassis Mount Enclosed 190mm 92mm 120mm - - 1.9kg
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