Abstract: The invention relates to an electric compressor control device comprising a low-voltage domain. The low-voltage domain comprises a first control unit set up to process control commands for the control of the electric compressor, and a first voltage supply set up to supply the first control unit and connected to a low-voltage source. The low-voltage domain comprises furthermore a high-voltage domain. The high-voltage domain comprises a second control unit set up to control a power output stage, wherein the power output state inverts a dc voltage from a high-voltage source into an ac voltage in order to supply a motor of the electric compressor with the ac voltage. The high-voltage domain comprises furthermore a second voltage supply set up to supply the second control unit and connected to the high-voltage source.

Abstract: Inverter for an electric compressor comprising an auxiliary voltage supply that supplies a control electronics of the inverter with a DC voltage. The auxiliary voltage supply comprises a series circuit of a linear voltage regulator and a linear pre-regulator. The linear pre-regulator comprises a transistor and is connected to the input terminal of the linear voltage regulator. The linear pre-regulator and/or the linear voltage regulator are advantageously actively cooled by a refrigerant utilized in the electric compressor.

Abstract: A configuration and a method for generating a negative voltage for a high-side switch in an inverter by providing at least one negative bias voltage for an inverter, wherein a simple and safe provision of the negative voltage becomes possible, and the switching costs as well as the costs and expenses for the production of such an inverter are reduced. A secondary winding generating a negative base voltage is arranged on a flyback transformer, wherein a first terminal of the secondary winding is connected to the HV+ potential and a second terminal of the secondary winding is connected via a rectifier diode to the first terminal for outputting the negative base voltage, wherein a bootstrap diode is arranged between the first terminal and a second terminal for outputting a negative base voltage (NEG BIAS A), and wherein a bootstrap capacitor is arranged between the first terminal and the second terminal.

Abstract: A configuration and a method for generating a negative voltage for a high-side switch in an inverter by providing at least one negative bias voltage for an inverter, wherein a simple and safe provision of the negative voltage becomes possible, and the switching costs as well as the costs and expenses for the production of such an inverter are reduced. A secondary winding generating a negative base voltage is arranged on a flyback transformer, wherein a first terminal of the secondary winding is connected to the HV+ potential and a second terminal of the secondary winding is connected via a rectifier diode to the first terminal for outputting the negative base voltage, wherein a bootstrap diode is arranged between the first terminal and a second terminal for outputting a negative base voltage (NEG BIAS A), and wherein a bootstrap capacitor is arranged between the first terminal and the second terminal.

Abstract: Inverter for an electric compressor comprising an auxiliary voltage supply that supplies a control electronics of the inverter with a DC voltage. The auxiliary voltage supply comprises a series circuit of a linear voltage regulator and a linear pre-regulator. The linear pre-regulator comprises a transistor and is connected to the input terminal of the linear voltage regulator. The linear pre-regulator and/or the linear voltage regulator are advantageously actively cooled by a refrigerant utilized in the electric compressor.

Abstract: The invention relates to an electric compressor control device comprising a low-voltage domain. The low-voltage domain comprises a first control unit set up to process control commands for the control of the electric compressor, and a first voltage supply set up to supply the first control unit and connected to a low-voltage source. The low-voltage domain comprises furthermore a high-voltage domain. The high-voltage domain comprises a second control unit set up to control a power output stage, wherein the power output state inverts a dc voltage from a high-voltage source into an ac voltage in order to supply a motor of the electric compressor with the ac voltage. The high-voltage domain comprises furthermore a second voltage supply set up to supply the second control unit and connected to the high-voltage source.