The new original XLSEMI chip, eliminate fake, disassemble chip; Up to 400Khz operating frequency, and LC filter circuit, output ripple is very low; Import TDK inductors, the heat and noise to a minimum; Input and output three MLCC Multilayer ceramic capacitors, interference enhance stability; Built-in MOSFET, the LM2577 built-triode say goodbye, can reach 94% efficiency