A power converter comprising: a primary stage comprising four first cut-off switches (S 11, S 12, S 13, S 14) forming a first H bridge; a control circuit capable of applying a first control signal to said first H bridge; a secondary stage comprising four second cut-off switches (S 21, S 22, S 23, S 24) forming a second H bridge; a control circuit capable of applying a second control signal to said second H bridge; and a power transmission stage coupling the primary stage to the secondary stage, the power transmission stage comprising a transformer comprising a primary winding and a secondary winding, wherein: a) the primary stage comprises an inductance (L r) in series with the primary winding of the transformer that are coupled between first and second output nodes of the first H bridge, or b) the secondary stage comprises an inductance (L r) in series with the secondary winding of the transformer that are coupled between first and second input nodes of the second H bridge, and wherein: - the control circuit of the secondary stage is electrically isolated from the control circuit of the primary stage; - the control circuit of the secondary stage is configured to, during a synchronization phase, based, in the alternative a), on a measurement of a current (I) in the secondary winding, and, in the alternative b), on a measurement of a voltage (U) across the secondary winding, generate a third signal representative of the first control signal applied to said first H bridge; and - the control circuit of the secondary stage is configured to, during the synchronization phase, control said second H bridge to short-cut the first and second input nodes of the second H bridge. a primary stage comprising four first cut-off switches (S 11, S 12, S 13, S 14) forming a first H bridge; a control circuit capable of applying a first control signal to said first H bridge; a secondary stage comprising four second cut-off switches (S 21, S 22, S 23, S 24) forming a second H bridge; a control circuit capable of applying a second control signal to said second H bridge; and a power transmission stage coupling the primary stage to the secondary stage, the power transmission stage comprising a transformer comprising a primary winding and a secondary winding, wherein: a) the primary stage comprises an inductance (L r) in series with the primary winding of the transformer that are coupled between first and second output nodes of the first H bridge, or b) the secondary stage comprises an inductance (L r) in series with the secondary winding of the transformer that are coupled between first and second input nodes of the second H bridge, a) the primary stage comprises an inductance (L r) in series with the primary winding of the transformer that are coupled between first and second output nodes of the first H bridge, or b) the secondary stage comprises an inductance (L r) in series with the secondary winding of the transformer that are coupled between first and second input nodes of the second H bridge, and wherein: - the control circuit of the secondary stage is electrically isolated from the control circuit of the primary stage; - the control circuit of the secondary stage is configured to, during a synchronization phase, based, in the alternative a), on a measurement of a current (I) in the secondary winding, and, in the alternative b), on a measurement of a voltage (U) across the secondary winding, generate a third signal representative of the first control signal applied to said first H bridge; and - the control circuit of the secondary stage is configured to, during the synchronization phase, control said second H bridge to short-cut the first and second input nodes of the second H bridge. - the control circuit of the secondary stage is electrically isolated from the control circuit of the primary stage; - the control circuit of the secondary stage is configured to, during a synchronization phase, based, in the alternative a), on a measurement of a current (I) in the secondary winding, and, in the alternative b), on a measurement of a voltage (U) across the secondary winding, generate a third signal representative of the first control signal applied to said first H bridge; and - the control circuit of the secondary stage is configured to, during the synchronization phase, control said second H bridge to short-cut the first and second input nodes of the second H bridge.