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Isolated Power Supplies for PLC I/O Modules

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Date: September 7, 2016

The training starts with an overview of an analog input module. Typical components and their voltage supply levels are shown. Next, possible power topologies like push-pull, flyback or fly-buck with their advantages and disadvantages are discussed.

The main part of the training is about the Fly-Buck topology. First, the working principle is explained. Then tips about the right selection of the duty cycle are given. Furthermore, effects of leakage inductance of a transformer are presented.

The training finishes with an overview about available TI Designs and power designs that use the Fly-Buck topology.

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