In-House Courses offered by Ridley Engineering:

The following courses are currently being offered for on-site company presentations. These popular and practical design courses are all taught personally by Dr. Ray Ridley. In-house courses are frequently booked up to six months in advance. Courses are designed for groups of 20 or more engineers. To speak with us about arranging a course at your facility, contact us. Please provide the number of participating engineers at your location. The following courses are typical offerings. They may be booked separately, or as a five-day package. Options for five-day packages with full laboratory are available within Europe, the US and Canada.

High-Frequency Magnetics Design
This popular course gives unique and effective techniques for designing inductors and transformers for switching power supplies. Very straightforward design rules allow you to rapidly optimize your magnetics, and the course takes the mystery out of power magnetics design. Also included are clearly explained and presented methods for analyzing high frequency proximity effects, leakage inductance, and core loss.

Topics covered: Core structures, core materials, inductor design equations, inductor examples, transformer design equations and examples, core loss, leakage inductance, winding capacitance, frequency response measurements, proximity loss, modern isolation needs and techniques, winding configurations, multiple output magnetics. Two-Day Course.

Control Analysis and Design for PWM Converters
This course presents a straightforward method for power supply analysis, providing simple circuit models which provide intuitive results which are an improvement on conventional state-space averaging. A universal model is given which can be used to analyze voltage-mode and current-mode control for any PWM converter, and which provides much better accuracy than conventional
techniques for current-mode control.

Topics covered: PWM converter operation modes, state-space averaging, PWM switch model, PSpice modeling, power stage characteristics, right-half plane zeros, current-mode control, subharmonic oscillation, compensation design, loop gain measurement, output impedance measurement, and input impedance measurement. Two-Day Course.

Detailed Flyback Converter Design
This very practical design course gives design tips for all the details of multi-output flyback converters. This particular topology can be used for almost any application under 25 W, and is a critical technology for most companies.

Topics covered: Complete flyback schematic, bootstrap circuits, control chip selection, CCM and DCM operating modes, gate drives, current limiting, snubber design, transformer construction details, circuit layout, multiple outputs, feedback compensation, feedback isolation, EMI filter design, surge suppression, holdup time, and safety isolation. One-Day Course.

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