Parallel operation of DC-DC converters with synchronous rectifiers

The possibility of parallel operation of DC-DC power converters with synchronous rectifiers (SRs) is investigated. It is found that, under certain circumstances, self-exited oscillation may occur in parallel-connected DC-DC power converters with self-driven SRs. The cause of this phenomenon is studied. An experimental circuit is built to verify that this problem can be solved by using control-driven SRs.

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