Using a 1:1 common mode inductor as a transformer has extremely low cost.
Input voltage range: DC3.8V-10V.
Output: DC5V 500mA
Conversion efficiency is about 85-90% (DC5V VIN)
500Vrms electrical isolation strength
This solution has been applied to the display panel of RT300-MKV and works perfectly.
Because there is no slope compensation inside the chip, large and small waves will appear when the input voltage is low (the duty cycle exceeds 50%, resulting in sub-harmonic oscillation).
Common mode inductor purchase link: https://item.taobao.com/item.htm?id=614729977937
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