Phoenix Contact Gmbh + Co. Kg

Alexander Moser

Thomas Sprink

A switched mode power supply includes an input circuit powered by an input voltage, wherein the input voltage is based on a voltage difference between a positive input voltage and a negative input voltage; an output circuit coupled to the input circuit and configured to provide an output voltage, and a direct current isolating element between the input circuit and the output circuit and configured to observe a prescribed safety requirement with regard to isolation between the input voltage and the output voltage. The input circuit has two coupled step-down converter stages, including a first step-down converter stage configured to step down the positive input voltage and a second step-down converter stage configured to step down the negative input voltage. The two coupled step-down converter stages are connected to the input circuit upstream of the DC isolating element.

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Werl, Germany

Alexander Moser