| 摘要 |
<P>PROBLEM TO BE SOLVED: To flexibly set timing of a switching operation in an inverter. <P>SOLUTION: An H-bridge circuit is controlled based on a triangular waveform signal Vosc and an error voltage Verr. A first high-side transistor MH1 and a second low-side transistor ML2 are turned on for a first period until the triangular waveform signal reaches the error voltage. The first high-side transistor MH1 is turned on for a second period until the triangular waveform signal reaches a peak edge. A second high-side transistor MH2 is turned on for a third period until the triangular waveform signal reaches a bottom edge. A first low-side transistor ML1 and the second high-side transistor MH2 are turned on for a fourth period until the triangular waveform signal reaches the error voltage again. The second high-side transistor MH2 is turned on for a fifth period until the triangular waveform signal reaches the peak edge again. The first high-side transistor MH1 is turned on for a sixth period until the triangular waveform signal reaches the bottom edge again. <P>COPYRIGHT: (C)2007,JPO&INPIT |
