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. 667-5789
BrandRS PRO
PHP948.61
Each
units
5V dc - 1A 5W 1 110 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 50.8mm 25.4mm 15.16mm 35g 72% +70°C
RS Stock No. 771-9382
BrandRS PRO
PHP659.90
Each
units
9V dc - 111mA 1W 1 120 → 430 V dc, 85 → 305 V ac PCB Mount Encapsulated 33.7mm 22.2mm 18mm 20g 72% +70°C
RS Stock No. 751-1421
BrandRS PRO
PHP2,857.51
Each
units
24V dc - 1.25A 30W 1 85 → 265V ac PCB Mount Enclosed 89mm 63.5mm 25mm 250g - +71°C
RS Stock No. 771-9420
BrandRS PRO
PHP2,080.87
Each
units
5V dc - 3A 15W 1 120 → 375 V dc, 85 → 265 V ac PCB Mount Enclosed 76.2mm 50.8mm 22.8mm 160g 76% +71°C
RS Stock No. 751-1415
BrandRS PRO
PHP2,781.24
Each
units
5V dc - 6A 30W 1 85 → 265V ac PCB Mount Enclosed 89mm 63.5mm 25mm 250g - +71°C
RS Stock No. 751-1412
BrandRS PRO
PHP2,403.82
Each
units
24V dc - 833mA 20W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.5mm 28.5mm 23.5mm 50g 83% +70°C
RS Stock No. 671-6717
BrandRS PRO
PHP1,221.76
Each
units
24V dc - 450mA 10W 1 120 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 53.5mm 28.5mm 19mm 50g - +70°C
RS Stock No. 771-9379
BrandRS PRO
PHP529.95
Each
units
5V dc - 500mA 3W 1 100 → 400 V dc, 85 → 264 V ac PCB Mount Ultra-Miniature 35mm 24mm 11mm - 69% +85°C
RS Stock No. 124-4713
BrandRS PRO
PHP1,921.35
Each
units
32V dc - 1.87A 60W 1 100 → 230V ac Panel Mount Open Frame 101.6mm 50.8mm 29mm - 89% +50°C
RS Stock No. 711-2614
BrandRS PRO
PHP2,806.92
Each
units
12V dc - 3A 36W 1 88 → 264V ac Chassis Mount Enclosed 78mm 51mm 28mm 180g 86% +71°C
RS Stock No. 771-9405
BrandRS PRO
PHP703.48
Each
units
9V dc - 222mA 2W 1 120 → 430 V dc, 85 → 305 V ac PCB Mount Encapsulated 33.7mm 22.2mm 18mm 20g 72% +70°C
RS Stock No. 161-8274
BrandRS PRO
PHP782.86
Each
units
15V dc - 2.4A 36W 1 - Chassis Mount Enclosed 99mm 82mm 30mm 230g 86% -
RS Stock No. 181-3261
BrandRS PRO
PHP1,683.22
Each
units
- - - - - - - - - - - - - -
RS Stock No. 181-2186
BrandRS PRO
PHP326.00
Each
units
3V dc - 770mA 2.3W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 66% +70°C
RS Stock No. 181-2143
BrandRS PRO
PHP4,633.33
1 Tube of 13
Tube(s)
12V dc - 420mA 5W 1 100 → 370 V dc, 85 → 264 V ac PCB Mount Encapsulated 37mm 24.5mm 18mm 25g 79% +70°C
RS Stock No. 771-9401
BrandRS PRO
PHP715.93
Each
units
5V dc - 400mA 2W 1 120 → 430 V dc, 85 → 305 V ac PCB Mount Encapsulated 33.7mm 22.2mm 18mm 20g 70% +70°C
RS Stock No. 819-3961
BrandRS PRO
PHP5,958.20
Each
units
15V dc - 10.4A 156W 1 88 → 264V ac Chassis Mount Enclosed 97mm 38mm 158mm 570g 92% +71°C
RS Stock No. 161-8212
BrandRS PRO
PHP666.76
Each
units
24V dc - 700mA 16.8W 1 88 → 264V ac Chassis Mount Enclosed 85mm 58.5mm 36.5mm 250g 73% +60°C
RS Stock No. 161-8239
BrandRS PRO
PHP10,322.66
Each
units
12V dc - 42A 600W 1 90 → 264V ac Chassis Mount Enclosed 218mm 116.5mm 41mm - 88% +70°C
RS Stock No. 161-8215
BrandRS PRO
PHP725.99
Each
units
12V dc - 2.1A 25.2W 1 88 → 264V ac Chassis Mount Enclosed 850mm 58.5mm 36.5mm 250g 77.5% +60°C
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