Self-Excitation Push-Pull Type Converter

摘要

A self-excitation push-pull type converter with a transformer having a closed magnetic core or iron core, which formed of a main part (52) and a local part (53). The local part reaches magnetic saturation earlier than the main part under the same increasing magnetic field excitation. When the self-excitation push-pull type converter is in a light load state, the efficiency is significantly improved, and further improved in a rated load state. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter increases while still keeping the loss low. The probability of generating a current peak at the moments of switching on or off is reduced, thereby further improving the efficiency and reducing output ripples.

主权项

1. A self-excitation push-pull converter, including a transformer, with the features that: the closed magnetic core or iron core of the transformer has a main section and a partial section, the partial section can reach magnetic saturation before the main section with the same increasing magnetic field excitation.