SWITCHING MODE POWER SUPPLY AND ITS CONTROLLING METHOD

摘要

Disclosed is a switching mode power supply including first and second inductively coupled induction coils and converting a voltage applied to the first induction coil to be supplied to the second induction coil. The switching mode power supply comprises a power switching unit for switching a voltage applied to the first induction coil; a load information acquiring unit for acquiring information of load on the second induction coil; and a bias current adjusting unit for adjusting a switching drive current based on the information of the load; and a driving unit for driving the power switching unit based on the information of the load and the switching drive current.