Design Tips

January 2013

Flyback power supply development: - Part I

Dr. Ray Ridley, President, Ridley Engineering

This article is the first of a series in which Dr. Ridley shows the steps involved in designing and building an offline flyback converter. The first part of the series presents the power supply architecture and schematic, including the control and bias circuits. Flyback power converter The offline flyback converter is a to

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Date:

01/15/2013

Input Impedance Measurements and Filter Interactions - Part III

Dr. Ray Ridley, Managing Director, Ridley Engineering

In this article, Dr. Ridley continues the discussion of power supplies with input filters. He shows how the presence of a poorly-designed filter has a drastic effect on the loop gain of a voltage-mode controlled system. He also shows that the loop gain of a current-mode system can be a poor indicator of stability

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Date:

01/09/2013