ShenZhen Yinghuiyuan Electronics Co.,Ltd
As the power of the power supply increases, the power adapter itself is a power consumption component, so the power adapter conversion is efficient? Next power adapter manufacturers for you to explain in detail.
Conversion efficiency is an important indicator of a power adapter. High efficiency refers to the loss of the power adapter itself is smaller, the conversion efficiency of the power adapter is the total output power divided by the total input power, that is, efficiency: power efficiency η=PO/PI. In the formula, Po is the output power and PI is the input power. The conversion efficiency of the power adapter cannot reach 100%.
The power consumed by the power adapter is expressed in the form of heating. The heating of the power adapter itself mainly depends on the conversion efficiency of the power adapter and the volume of the power adapter, that is, the difference between the housing temperature and the ambient temperature. Power adapter housing heat meter products directly affect the temperature rise. The following formula can be used for rough estimation of temperature rise: Temperature rise = thermal resistance coefficient × power consumption of calibration block. For places where the temperature is high, the power consumption of the power adapter should be reduced to reduce the temperature rise. In addition to meeting the working requirements of electronic and electrical appliances, when the output power of the power adapter is fixed, the working temperature rise of the power adapter also has a certain impact on the average time without failure. High efficiency and low temperature rise make the product long life, small volume, speaking of volume, it is necessary to talk about power density.
Most power adapter manufacturers use a product's power density as a measure of its effectiveness. Power density is usually expressed in watts per cubic inch: w/in3, where the average available output of a power adapter is the available power density.
September 10, 2024
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