Design of a digitally controlled boost converter for automotive headlamp applications

A voltage-mode boost converter for automotive (primarily LED headlamp) applications with DSP digital control is presented in this paper. A lean digital control design procedure is proposed. The transfer function of the boost converter's power plant is derived and a three-pole three-zero (3p3z)...

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Bibliographic Details
Published in2017 XXVI International Scientific Conference Electronics (ET) pp. 1 - 4
Main Authors Kovatchev, Emil, Evstatieva, Nadezhda
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2017
Subjects
3p3z-Controller
Automotive
Automotive engineering
Bode Plot
Boost Converter
Control Loop Stability
Digital control
Light emitting diodes
MATLAB
Power generation
Resonant frequency
Voltage control
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Summary:A voltage-mode boost converter for automotive (primarily LED headlamp) applications with DSP digital control is presented in this paper. A lean digital control design procedure is proposed. The transfer function of the boost converter's power plant is derived and a three-pole three-zero (3p3z) compensator is designed in MATLAB. The 3p3z-compensator is translated into the z-domain and implemented on a microcontroller with DSP core. A prototype boost converter is designed, built and thoroughly investigated. The performance of the tuned boost controller is evaluated in terms of stability, steady-state precision, transient response and efficiency.
DOI:10.1109/ET.2017.8124359