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. 122-7653
Mfr. Part No.ECE05US48
BrandXP Power
$34.24
Each
units
48V dc - 100mA 5W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 25.4mm 25.4mm 15.24mm - - 16g
RS Stock No. 122-7166
Mfr. Part No.GCS250PS24
BrandXP Power
$163.36
Each
units
24V dc - 10.4A 250W 85 → 264V ac 1 Chassis Mount Open Frame 127mm 76.2mm 36.3mm - - 290g
RS Stock No. 122-7713
Mfr. Part No.ECL10US05-T
BrandXP Power
$38.00
Each
units
5V dc - 2A 10W 120 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Open Frame 65mm 25.4mm 18.5mm - - 26g
RS Stock No. 122-7583
Mfr. Part No.VFT80US24
BrandXP Power
$43.92
Each
units
24V dc - 3.33A 80W 85 → 264V ac 1 Chassis Mount Open Frame 101.6mm 47.62mm 25mm - - 130g
RS Stock No. 122-7836
Mfr. Part No.LCL150PS48
BrandXP Power
$107.62
Each
units
48V dc - 3.1A 150W 127 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 192mm 95mm 50mm - - 630g
RS Stock No. 122-7712
Mfr. Part No.ECL10US05-P
BrandXP Power
$38.16
Each
units
5V dc - 2A 10W 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Open Frame 49.5mm 25.4mm 18.5mm - - 26g
RS Stock No. 122-7880
Mfr. Part No.VCS70US24
BrandXP Power
$35.52
Each
units
24V dc - 2.92A 70W 127 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 130mm 98.5mm 41mm - - 400g
RS Stock No. 122-7113
Mfr. Part No.ECP60UD03
BrandXP Power
$82.33
Each
units
5/24V dc - 1.5 A, 7 A 60W 85 → 264V ac 2 Chassis Mount Open Frame 101.6mm 50.8mm 27.9mm - - 155g
RS Stock No. 122-7594
Mfr. Part No.ECP150PS28
BrandXP Power
$139.42
Each
units
28V dc - 5.4A 150W 120 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 50.8mm 29.5mm - - 190g
RS Stock No. 122-7839
Mfr. Part No.LCL300PS24
BrandXP Power
$210.42
Each
units
24V dc - 13A 310W 127 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 205mm 110mm 50mm - - 880g
RS Stock No. 122-7900
Mfr. Part No.SDS120PS24B
BrandXP Power
$198.80
Each
units
24V dc - 5A 120W 120 → 370 V dc, 90 → 264 V ac 1 Chassis Mount U Bracket 127mm 81.4mm 39.2mm - - 450g
RS Stock No. 122-7643
Mfr. Part No.GCS350PS24
BrandXP Power
$213.09
Each
units
24V dc - 14.6A 350W 85 → 264V ac 1 Chassis Mount Open Frame 127mm 76.2mm 36.3mm - - 290g
RS Stock No. 122-7870
Mfr. Part No.VCS100US24
BrandXP Power
$46.82
Each
units
24V dc - 4.17A 100W 127 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 159mm 98.2mm 42mm - - 500g
RS Stock No. 122-7571
Mfr. Part No.VCP24US24
BrandXP Power
$31.44
Each
units
24V dc - 1A 24W 90 → 264V ac 1 PCB Mount Open Frame 73.8mm 41.6mm 21mm - - 75g
RS Stock No. 122-7857
Mfr. Part No.SHP350PS24
BrandXP Power
$236.56
Each
units
24V dc - 14.5A 348W 85 → 264V ac 1 Chassis Mount Open Frame 179.3mm 91.44mm 53.34mm - - 788g
RS Stock No. 122-7842
Mfr. Part No.LCL500PS15
BrandXP Power
$299.42
Each
units
15V dc - 34A 500W 127 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 250mm 127mm 53mm - - 1.5kg
RS Stock No. 122-7117
Mfr. Part No.ECP60UT03
BrandXP Power
$80.69
Each
units
5/12/24V dc - 9.1 A/1.95 A/0.3A 60W 85 → 264V ac 3 Chassis Mount Open Frame 101.6mm 50.8mm 27.9mm - - 155g
RS Stock No. 122-7877
Mfr. Part No.VCS70US05
BrandXP Power
$41.20
Each
units
5V dc - 10A 50W 127 → 370 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 130mm 98.5mm 41mm - - 400g
RS Stock No. 122-7118
Mfr. Part No.ECP60UT04
BrandXP Power
$76.25
Each
units
5/12/24V dc - 9.1 A/1.95 A/0.3A 60W 85 → 264V ac 3 Chassis Mount Open Frame 101.6mm 50.8mm 27.9mm - - 155g
RS Stock No. 122-7590
Mfr. Part No.ECP130PS48
BrandXP Power
$151.04
Each
units
48V dc - 2.7A 130W 85 → 264V ac 1 Chassis Mount Open Frame 76.2mm 50.8mm 24.1mm - - 195g