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. 182-9975
Mfr. Part No.LPS42
PHP1,837.32
Each
units
5V dc - 11A 40W 120 → 300 V dc, 85 → 264 V ac 1 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 183-0004
Mfr. Part No.LPS45
PHP2,482.90
Each
units
24V dc - 2.3A 40W 120 → 300 V dc, 85 → 264 V ac 1 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 629-5535
Mfr. Part No.NFS110-7602PJ
PHP6,728.21
Each
units
5.1/±12/24V dc - 3.5 A, 4.5 A, 8 A, 500 mA 80W 120 → 370 V dc, 85 → 264 V ac 4 Chassis Mount Open Frame 177.8mm 107.95mm 45.72mm - - 600g
RS Stock No. 338-1964
Mfr. Part No.LPS355-CEF
PHP20,978.23
Each
units
24V dc - 14.6A 350W 120 → 300 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 273.8mm 127mm 88.9mm - - 1.6kg
RS Stock No. 668-8867
Mfr. Part No.LPS102-M
PHP4,088.50
Each
units
5V dc - 24A 80W 120 → 300 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 50.8mm 33mm - - 200g
RS Stock No. 668-8889
Mfr. Part No.LPS202-M
PHP5,239.53
Each
units
5V dc - 40A 100W 120 → 300 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 127mm 76.2mm 33.6mm - - 340g
RS Stock No. 183-0032
Mfr. Part No.LPT44
PHP1,938.15
Each
units
±5/12V dc - 2.5 A, 5 A, 700 mA 40W 120 → 300 V dc, 85 → 264 V ac 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 338-1986
Mfr. Part No.LPQ352-CEF
PHP27,718.37
Each
units
5/±12/3.3 → 24V dc - 6 A, 12 A, 50 A 350W 120 → 300 V dc, 85 → 264 V ac 4 Chassis Mount Enclosed 273.8mm 127mm 88.9mm - - 1.8kg
RS Stock No. 183-0098
Mfr. Part No.LPS65
PHP2,882.95
Each
units
24V dc - 2.5A 60W 120 → 300 V dc, 85 → 264 V ac 1 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS Stock No. 338-1958
Mfr. Part No.LPS354-CEF
PHP22,395.13
Each
units
15V dc - 23.3A 350W 120 → 300 V dc, 85 → 264 V ac 1 Chassis Mount Enclosed 273.8mm 127mm 88.9mm - - 1.6kg
RS Stock No. 338-1992
Mfr. Part No.LPQ353-CEF
PHP26,338.06
Each
units
5/±15/3.3 → 24V dc - 6 A, 12 A, 50 A 350W 120 → 300 V dc, 85 → 264 V ac 4 Chassis Mount Enclosed 273.8mm 127mm 88.9mm - - 1.8kg
RS Stock No. 122-8364
Mfr. Part No.LCB35Q
PHP1,179.63
Each
units
24V dc - 1.5A 36W 125 → 373 V dc, 88 → 264 V ac 1 Chassis Mount Enclosed 99.5mm 81.5mm 35.5mm - - 280g
RS Stock No. 455-7673
Mfr. Part No.LPS45-M
PHP2,513.82
Each
units
24V dc - 2.3A 40W 120 → 300 V dc, 85 → 264 V ac 1 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS Stock No. 243-2083
Mfr. Part No.LPT65
PHP3,005.58
Each
units
5/12/24V dc - 1 A, 2 A, 8 A 60W 120 → 300 V dc, 85 → 264 V ac 3 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS Stock No. 629-5721
Mfr. Part No.NLP40-7605J
PHP1,906.07
Each
units
5V dc - 8A 40W 120 → 370 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 107.95mm 63.5mm 29.21mm - - 200g
RS Stock No. 455-7746
Mfr. Part No.LPT62-M
PHP3,333.03
Each
units
5/±12V dc - 1 A, 3.5 A, 8 A 60W 120 → 300 V dc, 85 → 264 V ac 3 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS Stock No. 668-8873
Mfr. Part No.LPS105-M
PHP4,032.26
Each
units
24V dc - 6.3A 100W 120 → 300 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 101.6mm 50.8mm 33mm - - 200g
RS Stock No. 771-8519
Mfr. Part No.LCC250-12U-7PE
PHP10,362.79
Each
units
12V dc - 20.8A 250W 90 → 264V ac 1 Chassis Mount Enclosed 177.6mm 101.4mm 37.6mm - - -
RS Stock No. 668-8883
Mfr. Part No.LPS203-M
PHP5,239.53
Each
units
12V dc - 20.8A 125W 120 → 300 V dc, 90 → 264 V ac 1 Chassis Mount Open Frame 127mm 76.2mm 33.6mm - - 340g
RS Stock No. 461-812
Mfr. Part No.AIF04ZPFC-01L
PHP14,864.24
Each
units
380V - 4.2A 1.6kW 120 → 370 V dc, 85 → 264 V ac 1 PCB Mount Encapsulated 116.8mm 61mm 13.95mm - - 300g