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Astek Globe 9Fl-1., No. 428, Chung Hsiao E. Road, Xizhi Dist., New Taipei City, Taiwan
AC DC Switching Power SupplyEvery day, we need electricity to power on the daily devices. Let’s see how it work. After the power plant sends thousands of AC high voltages of 20,000 volts, it is stepped down to 100V and 200V through the transformer in the pole before being sent to the general household. The outlet in the house supplies AC power, so after the AC/DC power supply conversion circuit, the DC power is supplied to the household appliance.The type we insert into the appliance is open frame power supply. Another with a plastic case, AC plug/AC inlet and DC connector is power adaptor. As to the usages, there are IT switching power supplies, medical power supply units, battery chargers, USB chargers and DC DC car adaptors. These are on Astek’s power supplies product lists.About the switching power supplies design, at the initial stage, the required specifications must be confirmed.1. Input voltage range, output voltages/currents2. Standby power3. Max./min./cooling temperature4. The allowable area/heights in size5. Necessary protection: such as overcurrent, overvoltage, and over temperature6. Special environments/application: like used in tropic zone or with aerospace…7. CostsEvaluation and trial1. Use evaluation board / work2. Make a test board, run under preset conditions and evaluate performance3. Debugging, optimization4. Distinguish Compliance / non-compliance with specifications and safety standards.5. Reserved space for modification and upgrade by customers’ demand or when new safety standards enforced.When evaluating, carefully check the output voltage, load current, temperature upper limit, etc. If the design is not able to withstand the temperature, it is easy to deviate from the required specifications during mass production, or because the batch affects the yield. The characteristics of the components that make up the circuit are different, so it is important to understand the characteristics of the part and design an article that meets the specifications. During this period, it’s critical to choose the right components, power supply layout and circuits.After then, the design of power supplies is closed to complete and initiate the mass production. Before the shipments, our factory will inspect with Chroma and 100% burn-in tests.Any inquiries, please feel free to touch us. https://www.astekglobe.com/hot_317390.html AC DC Switching power supplies 2021-05-13 2022-05-13
Astek Globe 9Fl-1., No. 428, Chung Hsiao E. Road, Xizhi Dist., New Taipei City, Taiwan https://www.astekglobe.com/hot_317390.html
Astek Globe 9Fl-1., No. 428, Chung Hsiao E. Road, Xizhi Dist., New Taipei City, Taiwan https://www.astekglobe.com/hot_317390.html
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How to make the open frame power supply inside the application work well?

Sometimes, the open frame power supplies vs applications are just like shoes to people. Good shoes will make you walk well and comfortable. So do the open frames. Good switching power supplies also prolong the life of equipment.

Besides the open frame units on Astek open frames lists, we also take customized projects. When running a new project and design the pcb power supplies, it’s important for us to check the below:

1. How many voltage ranges at input?

2. How many voltages and currents does the application needs?

3. Any size limits? If PCB power supply is too big or high, it’s difficult to match the inside space. The engineer shall consider the quality and size of these components and they are easy to purchase (product source stability) and layout on the PCB boards.

4. What’s its duty cycle? Does it run 7 hours continuously in 24 hours or others conditions?

5. What is the environments it works? Ambient temperature? Working temperature? Inside or outside the house? As for cooling convection, besides the heat from open frame and devices working, it’s also important that the position where power supply is and if good ventilate. Heat will cause the output derating.

6. What kind of category of safety approvals the application belongs to? Is it IEC62368-1, IEC60601-1 or any others?

7. Any special requirements on the specifications? Some are used in high heights; another in low places. Some are used in hot; another in cold places. Some countries are with unstable input voltages. Some places are easy to Electrostatic.

The more details we get from the customers, the best the power supplies customized design. For more information, please contact us asap.

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