Ac/dc converter with galvanic insulation

Details Ac/dc converter with galvanic insulation Ac/dc converter with galvanic insulation

H - Electricity

02

M

H02M 3/335 (2006.01) H02M 1/42 (2007.01) H02M 7/21 (2006.01)

Patent

CA 2709574

The invention relates to an AC/DC converter that comprises at the input a rectifying circuit (2) connected in series to the primary winding (5) of an insulation transformer (6) and to a splitting switch (T1) connected to a pulse-width modulation control circuit (10), the insulation transformer including a first secondary winding (7) having a direction identical to that of the primary winding and connected to the output line (8) of the converter via a diode (D4), the output line being connected to an output capacitor (Cout), characterised in that the insulation transformer includes a second secondary winding (9) having a direction opposed to that of the primary winding and connected to the output line via a diode (D2).

L'invention concerne un convertisseur alternatif / continu comportant en entrée un circuit redresseur (2) raccordé en série à un enroulement primaire (5) d'un transformateur d'isolement (6) et à un commutateur de découpage (T1) relié à un circuit de commande (10) par modulation de largeur d'impulsion, le transformateur d'isolement comprenant un premier enroulement secondaire (7) qui est de sens identique à l'enroulement primaire et qui est relié à une ligne de sortie (8) du convertisseur via une diode (D4), la ligne de sortie étant reliée à un condensateur de sortie (C out), caractérisé en ce que le transformateur d'isolement comprend un deuxième enroulement secondaire (9) qui a un sens opposé à l'enroulement primaire et qui est relié à la ligne de sortie via une diode (D2).

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