efficiency

In a power supply circuit, it refers to the ratio of output power excluding losses to the input power. It is expressed by the following formula.

(Output power / Input power) × 100 (%)

The smaller the losses such as resistance loss that occur when converting input voltage, the higher the efficiency. It is one of the important figures representing the performance of a power supply circuit, and higher efficiency is desirable. Since the loss eventually becomes heat, if the efficiency is low, thermal management such as forced cooling may be necessary. With the recent spread of solar power generation and storage batteries, the power conversion circuits such as power conditioners are becoming increasingly efficient. Toward a future decarbonized society, high efficiency in power conversion circuits is required.