Adaptive Constant On-Time Control Technique Application in Boost Converters

A continous-conduction mode synchronous boost converter controlled with adaptive Constant On-Time (COT) technique is presented. This method focuses on operating a DC-DC converter with a fixed switching frequency while retaining the benefits of a COT, such as the elimination of the need for slope com...

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Bibliographic Details
Published in2023 18th Conference on Ph.D Research in Microelectronics and Electronics (PRIME) pp. 201 - 204
Main Authors Gemelli, Alessandro, Rezzi, Francesco, Grassi, Marco, Bonizzoni, Edoardo, Malcovati, Piero
Format Conference Proceeding
LanguageEnglish
Published IEEE 18.06.2023
Subjects
boost converter
constant ton
control loop
dc-dc converter
DC-DC power converters
Frequency conversion
Resistors
Simulation
stability
Stability analysis
Switching frequency
Topology
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Summary:A continous-conduction mode synchronous boost converter controlled with adaptive Constant On-Time (COT) technique is presented. This method focuses on operating a DC-DC converter with a fixed switching frequency while retaining the benefits of a COT, such as the elimination of the need for slope compensation. The complete topology will be briefly described, with special emphasis on the block that generates the converter on-time. Furthermore, the stability analysis of the system is examined. Simulation results are given at different output voltages, in order to show the versatility of the control loop in maintaining the frequency fixed by adjusting the on-time based on the operating point of the converter.
DOI:10.1109/PRIME58259.2023.10161813