Vitesco Technologies Gmbh

Veit Wagenseil

Walter Schrod

Werner Lex

A driver circuit for a PFC cell is described. The PFC cell has a half-bridge with two half-bridge switches connected via a connection point. A star point switch connects the connection point to a star point of the PFC cell. The driver circuit has a target control signal input for target actuation signals and two half-bridge drivers connected downstream. The half-bridge drivers are configured to transmit signals from the inputs to the outputs only when they are not both in the HIGH state. The first output of the first half-bridge driver is connected to a control output of the driver circuit for the star point switch. At least one input of the second half-bridge driver is connected downstream of the second output of the first half-bridge driver. Two outputs of the second half-bridge driver are connected to control outputs of the driver circuit for the two half-bridge switches.

Driver circuit with two cascading half-bridge drivers for actuating three transistors

An intermediate circuit is equipped with a first terminal connection, which includes a neutral conductor connection, and with a first and a second intermediate circuit capacitor and a diode circuit. The intermediate circuit has configuration switches which in a first state connect the intermediate circuit capacitors to one another in series and in a second state connect the intermediate circuit capacitors to one another in parallel. The configuration switches are each designed as changeover switches, which bypass the diode circuit in the first state, wherein the neutral conductor connection is connected to the diode circuit. A vehicle-based charging circuit, which includes the intermediate circuit and a rectifier circuit, is also described.

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Munich, Germany

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