ABSTRACT
The performance of power converters can be improved with the use of closed-loop control. Because the large majority of power converters start from a voltage source, closed-loop current control is very useful. Better performance can be achieved with closed-loop current sensors. They represent a different class of Hall-effect current sensors that include an application-specific integrated circuit to provide extremely low offset drift with temperature, resulting in stable, repeatable, accurate measurements. Hall-effect current sensors are available in hundreds of amperes and provide highly accurate measurement for a large class of power electronic applications. The most important module in the current closed-loop control relates to current measurement. With the advent of Integrated Power Modules during the last decade, several changes occurred with the packaging of lower power level converters as they got more and more on circuit board. Current control within power converters is subject to noise and distortion.
