Synchronous non-isolated push-pull converter

摘要

A push-pull converter configured to convert an input voltage to an output voltage according to a transfer ratio is provided. The push-pull converter comprises a transformer, a first and a second switch transistor arranged to operatively provide the input voltage to the transformer such that the transfer ratio is obtainable, a first and a second rectification transistor arranged to operatively receive a first and a second part, respectively, of the output voltage from the transformer such that the transfer ratio is obtainable. The push-pull converter is further configured to synchronously operate the first switch transistor and the first rectification transistor, synchronously operate the second switch transistor and the second rectification transistor, and operate the first and second switch transistors 180 degrees out of phase with respect to each other.

主权项

1. A push-pull converter configured to convert an input voltage to an output voltage according to a transfer ratio, wherein the push-pull converter comprises:
a transformer comprising a first set of transformer windings and a second set of transformer windings, wherein the first and second sets of transformer windings are arranged with opposite polarity with respect to each other; a first switch transistor arranged to operatively provide the input voltage to the first set of transformer windings such that the transfer ratio is obtainable; a second switch transistor arranged to operatively provide the input voltage to the second set of transformer windings such that the transfer ratio is obtainable; a first rectification transistor arranged to operatively receive a first part of the output voltage from the first set of transformer windings such that the transfer ratio is obtainable; a second rectification transistor arranged to operatively receive a second part of the output voltage from the second set of transformer windings such that the transfer ratio is obtainable; wherein the push-pull converter is configured to: synchronously operate the first switch transistor and the first rectification transistor; synchronously operate the second switch transistor and the second rectification transistor; and operate the first and second switch transistors 180 degrees out of phase with respect to each other, wherein the set of transformer windings is connected in series between the first switch transistor and the first rectification transistor, and the second set of transformer windings is connected in series between the second switch transistor and the second rectification transistor.