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Designing compensator for SEPIC converter

Posted: 22 Dec 2010     Print Version  Bookmark and Share

Keywords:SEPIC converters  Cuk converters  LM3478 

SEPIC converters have a number of advantages. They allow an input voltage higher or lower than the output voltage. The input voltage and output voltage can be dc isolated by a capacitor. The use of a low side switch makes the switch driver easy to implement. Unlike buck-boost and Cuk converters, the output voltage of SEPIC converters is non-inverting. Hence, SEPIC converters are useful in many applications.

This application note presents the design of compensators for current mode control SEPIC converters. The LM3478 current mode controller will be used. Detail procedures on designing a lag compensator will be presented in an illustrative example.

View the PDF document for more information.

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