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庫存編號 122-7184
製造零件編號SDS60US15
BrandXP Power
TWD1,628.00
單位
15 V dc - 4.2A 63W 1 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 127mm 76.2mm 30.5mm 240g 80% +70°C
RS庫存編號 777-2866
製造零件編號RSP-320-48
BrandMean Well
TWD1,721.00
單位
48 V dc - 6.7A 321.6W 1 88 → 264 V ac, 124 → 370 V dc Chassis Mount Enclosed 215mm 115mm 30mm 900g 90% +70°C
RS庫存編號 413-594
製造零件編號RT-65A
BrandMean Well
TWD668.00
單位
±12 V dc, ±5 V dc - 2.8 A, 6 A, 500 mA 66W 3 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 129mm 98mm 38mm 440g 77% +70°C
RS庫存編號 122-7073
製造零件編號ECM40UT31
BrandXP Power
TWD1,467.00
單位
±12 V dc, 5 V dc - 2 A, 6 A, 500 mA 40W 3 90 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 101.6mm 50.8mm 27mm 150g - +70°C
RS庫存編號 629-5800
製造零件編號NLP65-9612GJ
TWD2,655.00
單位
12 V dc - 5.4A 65W 1 85 → 264V ac Chassis Mount Open Frame 127mm 76.2mm 32mm 283g 72% +70°C
RS庫存編號 455-7645
製造零件編號LPS42-M
TWD1,732.00
單位
5 V dc - 11A 40W 1 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g - +50°C
RS庫存編號 621-0629
製造零件編號RS-50-12
BrandMean Well
TWD499.00
單位
12 V dc - 4.2A 50W 1 88 → 264 V ac, 125 → 373 V dc Chassis Mount Enclosed 99mm 97mm 36mm 410g 84.5% +70°C
RS庫存編號 753-8032
製造零件編號O/P 1
BrandVox Power
TWD2,512.00
單位
1.5 → 7.5V O/P 1 25A 125W 1 - Rack Mount Open Frame 60mm 35mm 17mm 60g - +85°C
RS庫存編號 122-7169
製造零件編號GSP500PS12-EF
BrandXP Power
TWD8,702.00
單位
12 V dc - 42A 500W 1 80 → 264V ac Chassis Mount Enclosed 170.4mm 101.6mm 41.9mm 900g - +70°C
RS庫存編號 199-983
製造零件編號RPS-75-12
BrandMean Well
TWD662.00
單位
12 V dc - 6.3A 75.6W 1 90 → 264 V ac, 127 → 370 V dc Chassis Mount Open Frame 127mm 76.2mm 31mm 260g - +70°C
RS庫存編號 489-8700
製造零件編號PBA300F-24
BrandCosel
TWD10,116.00
單位
24 V dc - 14A 336W 1 85 → 264 V ac, 120 → 350 V dc Chassis Mount Enclosed 170mm 102mm 42mm 1kg 79 %, 82 % +71°C
RS庫存編號 106-5869
製造零件編號LRS-350-24RS
BrandMean Well
TWD1,092.00
單位
24 V dc - 14.6A 350W 1 90 → 132 V ac, 180 → 264 (By Switch) V ac, 240 → 370 V dc Chassis Mount Enclosed 215mm 115mm 30mm 760g 88% +70°C
RS庫存編號 675-5100
製造零件編號RAC30-24SA
BrandRecom
TWD2,103.00
單位
24 V dc - 1.25A 30W 1 90 → 264V ac PCB Mount Encapsulated 89mm 63.5mm 25mm 212g 82% +70°C
RS庫存編號 777-3106
製造零件編號EPS-15-12
BrandMean Well
TWD284.00
單位
12 V dc - 1.25A 15W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 63.5mm 45.7mm 24mm 57g 82% +70°C
RS庫存編號 192-1087
製造零件編號LPT22
TWD1,371.00
單位
±12 V dc, 5 V dc - 2 A, 4 A, 700 mA 25W 3 85 → 264 V ac, 120 → 300 V dc Chassis Mount Open Frame 127mm 76.2mm 29mm 230g 70% +50°C
RS庫存編號 122-7643
製造零件編號GCS350PS24
BrandXP Power
TWD4,400.00
單位
24 V dc - 14.6A 350W 1 85 → 264V ac Chassis Mount Open Frame 127mm 76.2mm 36.3mm 290g - +70°C
RS庫存編號 489-8687
製造零件編號PBA150F-24-N
BrandCosel
TWD4,540.00
單位
24 V dc - 6.5A 156W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 168mm 93mm 34mm 560g 85 %, 88 % +71°C
RS庫存編號 489-8643
製造零件編號PBA100F-12-N
BrandCosel
TWD3,686.00
單位
12 V dc - 8.5A 102W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Enclosed 160.5mm 93.5mm 35.5mm 440g 83% +71°C
RS庫存編號 777-3109
製造零件編號EPS-15-5
BrandMean Well
TWD284.00
單位
5 V dc - 3A 15W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 63.5mm 45.7mm 24mm 57g 78% +70°C
RS庫存編號 101-598
製造零件編號LEP240F-24
BrandCosel
TWD5,135.00
單位
24 V dc - 10A 240W 1 85 → 264 V ac, 120 → 370 V dc Chassis Mount Open Frame 222mm 95mm 42mm 690g 86% +70°C