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 621-0685
製造零件編號RS-150-24
BrandMean Well
HK$266.26
單位
24 V dc - 6.5A 156W 88 → 132 V ac, 176 → 264 V ac, 248 → 373 V dc 1 Chassis Mount Enclosed 199mm 98mm 38mm - - 700g
RS庫存編號 418-2308
製造零件編號TXL 060-0534TI
BrandTRACOPOWER
HK$783.79
單位
5/12/24 V dc - 1.2 A, 1.5 A, 6 A 60W 85 → 264 V ac, 120 → 375 V dc 3 Chassis Mount Enclosed 169mm 95mm 38mm - - 700g
RS庫存編號 644-8290
製造零件編號PSP-600-48
BrandMean Well
HK$1,593.91
單位
48 V dc - 12.5A 600W 88 → 264 V ac, 124 → 370 V dc 1 Chassis Mount Enclosed 170mm 120mm 93mm - - 1.9kg
RS庫存編號 739-7979
製造零件編號LS200-24
BrandTDK-Lambda
HK$697.57
單位
24 V dc - 8.4A 200W 85 → 264 V ac, 120 → 373 V dc 1 Chassis Mount Enclosed 210mm 98mm 41mm - - 700g
RS庫存編號 122-7684
製造零件編號ECE60US09
BrandXP Power
HK$547.05
單位
9 V dc - 6.67A 60W 85 → 264 V ac, 120 → 370 V dc 1 PCB Mount Encapsulated 91.4mm 38.1mm 28mm - - 191g
RS庫存編號 243-2083
製造零件編號LPT65
HK$507.10
單位
5/12/24 V dc - 1 A, 2 A, 8 A 60W 85 → 264 V ac, 120 → 300 V dc 3 Chassis Mount Open Frame 127mm 76.2mm 42.9mm - - 340g
RS庫存編號 833-8170
製造零件編號MAP80-4002
HK$4,121.66
單位
5/±12 V dc - 1 A, 4 A, 14 A 80W 90 → 132 V ac, 175 → 264 V ac 4 U Bracket U Bracket 182.9mm 106.7mm 45.7mm - - 820g
RS庫存編號 122-7092
製造零件編號ECM60UT33
BrandXP Power
HK$423.47
單位
5/±15 V dc - 2.5 A, 8 A, 500 mA 60W 90 → 264 V ac, 120 → 370 V dc 3 Chassis Mount Open Frame 101.6mm 50.8mm 27mm - - 150g
RS庫存編號 200-162
製造零件編號NV1-4G5FF
BrandTDK-Lambda
HK$2,540.06
單位
5/±15/24 V dc - 1 A, 5 A, 7.5 A, 8 A 180W 90 → 264V ac 4 Chassis Mount Open Frame 5in 3in 1.25in - - 250g
RS庫存編號 680-2830
製造零件編號LS150-48
BrandTDK-Lambda
HK$426.58
單位
48 V dc - 3.3A 150W 76 → 264 V ac, 88 → 132 V ac, 248 → 273 V dc 1 Chassis Mount Enclosed 7.8in 3.9in 1.5in - - 700g
RS庫存編號 705-9753
製造零件編號HRP-75-36RS
BrandMean Well
HK$444.31
單位
36 V dc - 2.1A 75.6W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Enclosed 129mm 98mm 38mm - - 470g
RS庫存編號 644-7017
製造零件編號RS-100-48
BrandMean Well
HK$281.53
單位
48 V dc - 2.3A 110W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 159mm 97mm 38mm - - 600g
RS庫存編號 629-5787
製造零件編號NLP65-9608GJ
HK$589.38
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 777-3109
製造零件編號EPS-15-5
BrandMean Well
HK$164.43
單位
5 V dc - 3A 15W 85 → 264 V ac, 120 → 370 V dc 1 Chassis Mount Open Frame 63.5mm 45.7mm 24mm - - 57g
RS庫存編號 413-611
製造零件編號RT-65D
BrandMean Well
HK$369.85
單位
5/12/24 V dc - 1 A, 1.5 A, 4 A 68W 88 → 264 V ac, 125 → 373 V dc 3 Chassis Mount Enclosed 129mm 98mm 38mm - - 440g
RS庫存編號 603-1139
製造零件編號PBW30F-15-N
BrandCosel
HK$518.91
單位
±15 V dc - 1 A, 1.4 A 30W 85 → 264 V ac, 110 → 370 V dc 2 Chassis Mount Enclosed 119.5mm 34.5mm 78mm - - 270g
RS庫存編號 627-3771
製造零件編號XLC
BrandExcelsys
HK$1,755.18
單位
- - - 600W 85 → 264 V ac, 120 → 380 V dc 4 Chassis Mount Enclosed 269.75mm 89mm 40.4mm - - 750g
RS庫存編號 192-1122
製造零件編號LPT25
HK$322.42
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 848-1851
製造零件編號GLC40AG
HK$1,010.02
單位
5.1/±12 V dc - - 40W 90 → 264V ac 3 Chassis Mount Open Frame - - - - - -
RS庫存編號 621-0584
製造零件編號RS-25-24
BrandMean Well
HK$119.68
單位
24 V dc - 1.1A 26W 88 → 264 V ac, 125 → 373 V dc 1 Chassis Mount Enclosed 78mm 51mm 28mm - - 200g