This question is not very easy to answer, SG3525 as the driver chip to form a push-pull booster circuit, the operating frequency is generally between 20 ~ 40 HZ can be set, after the boost is the DC voltage, the ripple set is well set, in the case of full load within plus or minus 5V (DC voltage is about 380V), If there is a battery attached to the DC voltage, the ripple voltage can be lower. The general conversion efficiency is in the range of 90% to 94%.