Analog-to-digital converter architectures for digital controller of high-frequency power converters

This paper presents a survey and a classification of architectures for analog-to-digital converter (ADC) targeting digital control for high-frequency switching DC-DC power converters. Previously presented designs are identified as particular cases of the proposed classification. An ADC architecture with direct binary code output is also proposed and uses simple encoder to convert exponentially weighted "thermometer code" into binary code. Its output can be compressed into a much shorter word in logarithmic law to serve as addressing character for look-up tables in digital regulator