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庫存編號 183-0010
製造零件編號LPT42
TWD1,314.00
單位
5/±12 V dc - 2.5 A, 5 A, 700 mA 40W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 455-7689
製造零件編號LPT42-M
TWD1,898.00
單位
5/±12 V dc - 2.5 A, 5 A, 700 mA 40W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 192-1267
製造零件編號LPS255-C
TWD9,895.00
單位
24 V dc - 10.4A 250W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Enclosed 262mm 127mm 76.2mm - - 1.2kg
RS庫存編號 183-0076
製造零件編號LPS63
TWD3,274.00
單位
12 V dc - 5A 60W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS庫存編號 182-9975
製造零件編號LPS42
TWD1,571.00
單位
5 V dc - 11A 40W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 455-7645
製造零件編號LPS42-M
TWD1,902.00
單位
5 V dc - 11A 40W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 629-5800
製造零件編號NLP65-9612GJ
TWD2,032.00
單位
12 V dc - 5.4A 65W 85 → 264V ac 1 Chassis Mount Open Frame 127mm 76.2mm 32mm - - 283g
RS庫存編號 192-1087
製造零件編號LPT22
TWD1,048.00
單位
5/±12 V dc - 2 A, 4 A, 700 mA 25W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 289-5030
製造零件編號LPQ153-C
TWD4,179.00
單位
5/±15/±5 → 25V dc - 2 A, 3 A, 6.4 A, 22 A 110W 85 → 132 V ac, 170 → 264 V ac, 220 → 300 V dc 4 Chassis Mount Enclosed 216mm 108mm 38.1mm - - 800g
RS庫存編號 751-1582
製造零件編號LPT102-M
TWD2,687.00
單位
5/±12 V dc - 2 A, 9 A, 18 A 80W 90 → 264V ac 3 Chassis Mount Open Frame 101.6mm 50.8mm 32.7mm - - 200g
RS庫存編號 192-1245
製造零件編號LPQ252-C
TWD8,682.00
單位
5/±12/±5 → 25V dc - 6 A, 10 A, 35 A 250W 85 → 264 V ac, 120 → 300 V dc 4 Chassis Mount Enclosed 262mm 127mm 76.2mm - - 1.4kg
RS庫存編號 192-1100
製造零件編號LPT23
TWD1,042.00
單位
5/±12 V dc - 5 A, 700 mA 25W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 455-7718
製造零件編號LPS63-M
TWD2,408.00
單位
12 V dc - 6.7A 60W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS庫存編號 629-5787
製造零件編號NLP65-9608GJ
TWD2,075.00
單位
5/±12 V dc - 2.5 A, 7.5 A, 650 mA 65W 85 → 264V ac 3 Chassis Mount Open Frame 127mm 76.2mm 32mm - - 283g
RS庫存編號 656-0564
製造零件編號LPT52
TWD3,420.00
單位
5/±12 V dc - 3 A, 8 A, 500 mA 55W 90 → 264 V ac, 127 → 300 V dc 3 Chassis Mount Open Frame 101.6mm 50.8mm 32.9mm - - 200g
RS庫存編號 289-5153
製造零件編號LPS254-CEF
TWD9,698.00
單位
15 V dc - 16.7A 250W 85 → 264 V ac, 120 → 300 V dc 1 Rack Mount Enclosed 262mm 127mm 76.2mm - - 1.2kg
RS庫存編號 192-1122
製造零件編號LPT25
TWD1,177.00
單位
5/±15 V dc - 2 A, 4 A, 700 mA 25W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 289-5181
製造零件編號LPQ253-CEF
TWD10,570.00
單位
5/±15/±5 → 25V dc - 6 A, 10 A, 35 A 250W 85 → 264 V ac, 120 → 300 V dc 4 Rack Mount Enclosed 262mm 127mm 76.2mm - - 1.4kg
RS庫存編號 183-0054
製造零件編號LPT45
TWD1,317.00
單位
5/±15 V dc - 2.5 A, 5 A, 700 mA 40W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 29mm - - 230g
RS庫存編號 455-7730
製造零件編號LPS65-M
TWD1,932.00
單位
24 V dc - 3.3A 60W 85 → 264 V ac, 120 → 300 V dc 1 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g