Dc/dc converter and control method for dc/dc converter

Abstract

The present invention can achieve stable transition between high-side and low-side power. A DC/DC converter is provided with a control unit and a main circuit including a switching circuit, and the control unit is provided with three control modes for transition between voltage levels, namely: a first mode in which a transition period between a pre-transition power level and a post-transition power level is implemented by means of constant-current control, a third mode in which a retention period for holding the voltages of the pre-transition power level and the post-transition power level is implemented by means of constant-voltage control, and a second mode in which a buffer period from the transition period to the retention period is implemented by means of constant-voltage control. The three modes are repeated in sequence so that a direct-current input is converted to and output as high-frequency pulses at a plurality of different voltage levels.

Dependencies are inferred from the claim text.