| 摘要 |
<p>A method for improving the efficiency of a DC-DC conversion circuit and a control apparatus for a DC-DC conversion circuit, the method comprising: while conducting and cutting off a plurality of MOSFET field effect transistors (MP1, MP2, MP3, MP4; MN1, MN2, MN3) in the conversion circuit according to a preset period, detecting the current flowing through the induction coil (L0) for energy storage and release in the conversion circuit; when the current flowing through the induction coil (L0) is lower than the lower threshold of the preset current, delivering a control level to the gates of a part of the plurality of MOSFET field effect transistors (MP1, MP2, MP3, MP4; MN1, MN2, MN3), thereby enabling the part of the MOSFET field effect transistors to stay in a cut-off state and no longer conducting according to the preset period. The method improves the efficiency of the conversion circuit in a light load state.</p> |
