Power adapter manufacturers believe that the power supply efficiency and power consumption of these two concepts are relatively well understood, the efficiency of the power supply, that is, the efficiency of the power supply work, while the power consumption is the loss of power, refers to the equipment, devices, etc., the difference between the input power and the output power, generally have the work of the power consumption and standby power consumption.
But there is a point that needs to be clarified, is that the power supply is working: efficiency < (total power consumption - standby power consumption) / total power consumption
Although the standby power consumption is the power supply itself all the loss, but in the power supply with a load, the power supply itself is greater than the standby power consumption.
The power consumption of the power supply itself mainly comes from the loss of the inductor/transformer, the loss of the switching tube, the loss of the diode, and these losses are related to the switching frequency, and the current switching power supply, when the output power is very low, will reduce the frequency in order to save energy, so the power consumption of the power supply itself when working with a load and standby is completely different.
But the efficiency is with the increase in load consumption and rise, this is very good to understand, the efficiency of the standby is 0, and with a load, the power supply itself power consumption increase can not keep up with the increase in load consumption. These are power adapter manufacturers organized by the relationship between power supply efficiency and power consumption, I hope to be able to help you.
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