Flyback Converter
AssigneeKoninklijke Philips Electronics N.V.
InventorsPaul Johannes Marie Julicher, Pieter Jan Mark Smidt, Fatmir Ribari, Franciscus Bernardus Marie Van Horck
Life of this patent
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Abstract
The present invention relates to a multiple output flyback converter having a switch regulated output circuit (5). To avoid a second communication interval, due an output voltage in this secondary controlled output that is lower what is implied by its number of winding turns, the inductance of this circuit is increased. This can preferably be done by increasing the leakage inductance of the winding (6) in the regulated circuit.
Claims6
A flyback converter, comprising a primary side input circuit (1), having a primary winding (2) wound on a transformer (3) and a primary switch element (4) in series with the primary winding (2), a first output circuit (5), having a first secondary winding (6), wound on the transformer (3) and connected in series with a rectifying element (7) and a secondary switch element (8), and at least a second output circuit (10), having a second secondary winding (11), wound on the transformer (3) and connected in series with a rectifying element (12), wherein said first output circuit (5) comprises means (24;
- 25;
- 27;
- 31) for increasing the inductance in the first output circuit (5).
Dependencies are inferred from the claim text.