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. 161-8255
BrandRS PRO
MYR96.81
Each
units
48V dc - 1.25A 60W 127 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 51mm 30mm - - -
RS Stock No. 161-8247
BrandRS PRO
MYR1,250.54
Each
units
48V dc - - 1kW - - Chassis Mount Enclosed - - - - - -
RS Stock No. 161-8229
BrandRS PRO
MYR422.10
Each
units
24V dc - 13A 300W 120 → 370 V dc, 90 → 264 V ac 1 PCB Mount Enclosed 199mm 99mm 50mm - - -
RS Stock No. 124-4711
BrandRS PRO
MYR179.21
Each
units
24V dc - 2.5A 60W 100 → 230V ac 1 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
RS Stock No. 161-8301
BrandRS PRO
MYR114.89
Each
units
48V dc - 3.3A 158W 170 → 264 V ac, 85 → 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 181-2146
BrandRS PRO
MYR541.06
1 Tube of 19
Tube(s)
5V dc - 1.2A 6W 100 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 50.8mm 25.4mm 15.36mm - - 31g
RS Stock No. 161-8272
BrandRS PRO
MYR66.68
Each
units
5V dc - 7A 35W - 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 230g
RS Stock No. 181-3262
BrandRS PRO
MYR189.78
Each
units
- - - - - - - - - - - - - -
RS Stock No. 771-9417
BrandRS PRO
MYR52.79
Each
units
15V dc - 133mA 2W 120 → 430 V dc, 85 → 305 V ac 1 PCB Mount Encapsulated 33.7mm 22.2mm 18mm - - 20g
RS Stock No. 828-0134
BrandRS PRO
MYR204.98
Each
units
12V dc - 2A 24W 100 → 240V ac 1 Cable Enclosed 140mm 80mm 85mm - - >1kg
RS Stock No. 791-1086
BrandRS PRO
MYR210.46
Each
units
48V dc - 3.2A 153.6W 120 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 199mm 99mm 30mm - - 600g
RS Stock No. 124-4708
BrandRS PRO
MYR164.46
Each
units
5V dc - 8A 60W 100 → 230V ac 1 Panel Mount Open Frame 101.6mm 50.8mm 29mm - - -
RS Stock No. 161-8300
BrandRS PRO
MYR114.89
Each
units
36V dc - 4.3A 155W 170 → 264 V ac, 85 → 132 V ac 1 Chassis Mount Enclosed 99mm 82mm 30mm - - 480g
RS Stock No. 161-8271
BrandRS PRO
MYR267.40
Each
units
48V dc - 4.2A 200W 90 → 264V ac 1 Chassis Enclosed 200mm 99mm 38mm - - -
RS Stock No. 161-8240
BrandRS PRO
MYR859.39
Each
units
24V dc - 26.5A 600W 90 → 264V ac 1 Chassis Mount Enclosed 218mm 116.5mm 41mm - - -
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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