Method and device for testing a voltage converter

A method of testing a voltage converter, wherein the method comprises:

• providing a frequency response analyzer which is configured to measure an electrical transfer function over a predefined frequency range, wherein the frequency response analyzer comprises a test signal output for outputting a test signal for the voltage converter, a reference signal input for receiving a reference signal which is applied to the voltage converter for the purpose of testing the voltage converter, and a response signal input having a predefined input impedance for receiving a response signal from the voltage converter,
• providing an impedance converter having an impedance converter input, which has a variably adjustable input impedance, and an impedance converter output, which has an output impedance matched to the input impedance of the response signal input,
• coupling the impedance converter output to the response signal input,
• adjusting the input impedance of the impedance converter to an impedance of the voltage converter,
• connecting the test signal output to the reference signal input and the impedance converter input via measuring lines which are connected to the test signal output, the reference signal input and the impedance converter input respectively,
• outputting a plurality of test signals via the test signal output at different frequencies, and
• acquiring a plurality of calibration values at the reference signal input and the response signal input via the impedance converter and impedance converter input, wherein each calibration value of the plurality of calibration values is assigned to a corresponding test signal of the plurality of test signals.

A method of testing a voltage converter, wherein the method comprises:

• providing a frequency response analyzer which is configured to measure an electrical transfer function over a predefined frequency range, wherein the frequency response analyzer comprises a test signal output for outputting a test signal for the voltage converter, a reference signal input for receiving a reference signal which is applied to the voltage converter for the purpose of testing the voltage converter, and a response signal input having a predefined input impedance for receiving a response signal from the voltage converter,
• providing an impedance converter having an impedance converter input, which has a variably adjustable input impedance, and an impedance converter output, which has an output impedance matched to the input impedance of the response signal input,
• coupling the impedance converter output to the response signal input,
• adjusting the input impedance of the impedance converter to an impedance of the voltage converter,
• connecting the test signal output and the reference signal input to a first terminal of the voltage converter via measuring lines and connecting the impedance converter input to a second terminal of the voltage converter via a measuring line,
• outputting a plurality of test signals via the test signal output at different frequencies, and
• acquiring a plurality of measurement values at the reference signal input and the response signal input via the impedance converter and impedance converter input, wherein each measurement value of the plurality of measurement values is assigned to a corresponding test signal of the plurality of test signals.