Method and circuit reducing reverse currents in synchronous rectifier converter circuit
A technology of synchronous rectifier and reverse current, which is applied to conversion equipment with intermediate conversion to AC, conversion of DC power input to DC power output, instruments, etc., which can solve the problems of increasing system complexity and cost, and achieve a small number of components , the effect of less complexity
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[0025] Detailed description of the preferred embodiment
[0026] The following is a detailed description of the present invention. Prior art circuits are first discussed, followed by a description of several preferred embodiments and alternatives of the present invention and a discussion of advantages.
[0027] FIG. 1 shows a prior art externally driven full-bridge synchronous rectification converter circuit, generally designated 10 . Specifically, synchronous rectification circuit 10 includes a primary side synchronous rectification circuit comprising four synchronous rectifiers Q1, Q2, Q3 and Q4 operably coupled to primary winding 14 of transformer 12 as shown. Primary winding 14 of transformer 12 is inductively coupled to secondary winding 16 to perform a DC-to-DC conversion function as is well known in the art. In operation, a signal from primary winding 14 of transformer 12 is induced onto secondary winding 16 which is center tapped to drive output inductor 20 as shown....
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