Patent ID: 6600667
Filing Date: 2003-07-29
Classification: H02M,Y02B

Abstract:
An electronic converter comprising an input circuit and an output circuit which share an inductive coupling formed by a first inductance (L2) in the input circuit and a second inductance (L3) in the output circuit, the output circuit having a first and a second output terminal, between which an output voltage (UA) can be produced, wherein the input circuit comprises:a first and a second input terminal for connection of a voltage source (UE) which has at least one DC voltage component; a series circuit between the first input terminal and a first connection end of the first inductance and which comprises a third inductance (L1) and a first capacitor (C1), with a first junction point (VP1) between the third inductance and the first capacitor being connected via an electronic switch (S1) to the second input terminal, and the third inductance (L1) being arranged between the first junction point (VP1) and the first input terminal, and the first capacitor (C1) being arranged between the first junction point (VP1) and said first connection end; a sensor resistor (RS) between the second input terminal and a second connection end of the first inductance; and a control circuit (ST), to which at least one of the output voltage and a voltage drop (US) across the sensor resistor (RS) is supplied as an input signal, the control circuit (ST) opening and closing the switch (S1) as a function of said input signal; wherein a second junction point (VP2) between the sensor resistor (RS) and said second connection end is connected to a logic ground (LM), and the second input terminal is connected to a power ground (PM), with the power ground and logic ground being at different electrical potentials.