Patent ID: 8611109
Filing Date: 2013-12-17
Classification: H02M

Abstract:
1. A flyback converter, comprising: input terminals and output terminals; a transformer with a first winding and a second winding, which are inductively coupled; a first switching element coupled in series with the first winding such that a first series circuit with the first switching element and the first winding is coupled between the input terminals; a rectifier arrangement coupled in series with the second winding such that a second series circuit with the rectifier arrangement and the second winding is coupled between the output terminals, the rectifier arrangement comprising a second switching element; and a control circuit configured in one drive cycle to switch on the first switching element for a first time period, after the first time period to switch on the second switching element for a second time period, to determine a third time period between an end of the second time period and a time at which the transformer assumes a predetermined transformer state, wherein: