Synchronous coupled boost circuit, boost circuit and power supply apparatus

Abstract

Disclosed are a synchronous coupled boost circuit, a boost circuit, and a power supply apparatus. In the synchronous coupled boost circuit, the source of the first upper transistor is connected to the non-dotted terminal of the first winding of the coupled inductor and the drain of the first lower transistor, the drain of the first upper transistor is connected to the power output terminal; the source of the second upper transistor is connected to the non-dotted terminal of the second winding of the coupled inductor and the drain of the second lower transistor, the drain of the second upper transistor is connected to the power output terminal; the source of the first lower transistor is grounded; and the source of the second lower transistor is grounded.

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