The 4 channels Buck-boost architecture, regardless of the input voltage than the output voltage is higher or lower than or equal to the desired voltage output, 4 channels step-up/down voltage architecture, controller chip, can directly drive the external NMOS, for the user's system to provide a wide range of voltages, high-current, high-power high-efficiency DCDC conversion to support a variety of medium and high-voltage and high-power applications; 4-tube lift voltage converter chip. Through the integration of ultra-low Rdson power MOS for the system to provide a highly integrated, high-density, peripheral devices to reduce the number of high-efficiency power conversion solutions