Power converters in automotive industries are needed to source electronic devices. DC-DC Buck converter allows to drive loads ensuring their safety operation taking the car battery voltage as an input to generate a sub-voltage or current. By means of a control loop, the system makes sure that the output variable has the desired value in each operation condition. The Peak Current Mode Control (PCMC) is used to control the output current. Whenever the current reaches the reference maximum value (by load specs), the system acts to lower it. Intrinsically over-current protection is guaranteed. The paper presents an improvement of the basic PCMC, where, instead of just controlling the peak value, the loop controls also the average, more delicate feature, resulting in a more reliable driver system. The circuit is able to source 3A average-4.5V from a 13.5V nominal battery voltage, with a peak current of 3.3A and a 0.6A maximum ripple (3 10%A). The concept has been designed and simulated on Simulink and then tested on hardware using dSpace, a Rapid Control Prototyping set-up.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    DC-DC Buck Converter Driver with Variable Off-Time Peak Current Mode Control



    Erscheinungsdatum :

    2020-01-01



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



    Conduction Modes of a Peak Limiting Current Mode Controlled Buck Converter

    Pejovic, Predrag / Glisic, Marija | BASE | 2014

    Freier Zugriff

    Buck Quasi-Resonant ZVS Converter with Linear Feedback Control: A Comparison with Current-Mode Control

    Dores-Costa, J. M. / European Space Agency | British Library Conference Proceedings | 2002



    Boost-buck converter control system

    NAKAMURA MAKOTO / FUNADA MASASHI / MORII AKIYOSHI | Europäisches Patentamt | 2016

    Freier Zugriff