Author(s):
An Ericsson technical paper
First published by Digital Power Forum 2006 - Richardson Texas
http://www.darnell.com/digitalpower/

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Performance Improvements for OEM System Designers - A Digital Control Case Study (pdf)

Abstract: 
Digital control techniques can be applied at several points within a power system, both internal to power converters and at the system level for purposes of implementing control and monitoring functions. This paper elaborates on the former situation. It compares the effects at the system level of implementation of control functions internal to a dc/dc regulator with digital techniques vs. The more traditional analog approaches. With either of the approaches considered in this comparison, the end user of the regulator may treat the device in a traditional way without any need for digital techniques at the system level. The comparison is done by means of a case study using an actual production product with only the minimal required changes to the power train so that the effects of the control system implementation are highlighted. Some of the areas of interest in the comparison are electrical performance including efficiency, parts count, power density, cost and reliability. The comparison is done from an end-user's perspective rather than focusing on benefits to the regulator designer.

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Copyright 2006 Ericsson.
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