A transmission circuit designed to transmit a feedback signal in an electronic converter comprising a switching stage comprising a transformer with at least one primary winding and one secondary winding, at least one electronic switch set on the primary side of said transformer for selectively transferring energy through said primary winding (Tl) to said secondary winding and an energy accumulator (Cout) set on the secondary side of said transformer, said energy accumulator (Cout) being charged by means of said energy transferred to said secondary winding, and a monitoring circuit configured for monitoring at least one signal (FB; Vout) on the secondary side of said transformer and generating a feedback signal as a function of said at least one signal (FB; Vout) the transmission circuit configured to be set on the secondary side of said transformer and comprising: - a first n-MOSFET transistor (SW WU) configured to selectively transfer energy from the energy accumulator (Cout) to said secondary winding in order to transmit said feedback signal; characterized in that the transmission circuit further comprises: - a second n-MOSFET transistor (SW MN), wherein the drain of said second transistor (SW MN) is connected to the gate of said first transistor (SW WU) and the source of said second transistor (SW MN) is connected to the source of said first transistor (SW WU); and - a driver circuit for driving said second transistor (SW MN), wherein said driver circuit comprises: - a charge-accumulation capacitor connected to the gate of said second transistor (SW MN); and - a charge circuit (C1, D1, D2, DZ) configured for drawing energy from the drain of said first transistor (SW WU) and charging said charge-accumulation capacitor by means of said energy drawn off, wherein said charge circuit (C1, D1, D2, DZ) comprises a decoupling capacitor connected to the drain of said first transistor (SW WU); and - means configured for selectively activating or deactivating charging of said charge-accumulation capacitor as a function of said feedback signal. - a first n-MOSFET transistor (SW WU) configured to selectively transfer energy from the energy accumulator (Cout) to said secondary winding in order to transmit said feedback signal; - a second n-MOSFET transistor (SW MN), wherein the drain of said second transistor (SW MN) is connected to the gate of said first transistor (SW WU) and the source of said second transistor (SW MN) is connected to the source of said first transistor (SW WU); and - a driver circuit for driving said second transistor (SW MN), wherein said driver circuit comprises: - a charge-accumulation capacitor connected to the gate of said second transistor (SW MN); and - a charge circuit (C1, D1, D2, DZ) configured for drawing energy from the drain of said first transistor (SW WU) and charging said charge-accumulation capacitor by means of said energy drawn off, wherein said charge circuit (C1, D1, D2, DZ) comprises a decoupling capacitor connected to the drain of said first transistor (SW WU); and - means configured for selectively activating or deactivating charging of said charge-accumulation capacitor as a function of said feedback signal. - a charge-accumulation capacitor connected to the gate of said second transistor (SW MN); and - a charge circuit (C1, D1, D2, DZ) configured for drawing energy from the drain of said first transistor (SW WU) and charging said charge-accumulation capacitor by means of said energy drawn off, wherein said charge circuit (C1, D1, D2, DZ) comprises a decoupling capacitor connected to the drain of said first transistor (SW WU); and - means configured for selectively activating or deactivating charging of said charge-accumulation capacitor as a function of said feedback signal.