Parametric Analysis of Automotive Grade Buck Converters


Vajra R Singh, Sindhu Rajendran
Electronics and Communication Dept., R.V College of Engineering, Bangalore, India.


The current power system design in electric automobiles has become increasingly complicated due to innumerable electronics which are required to be integrated for the effective functioning of the system. A DC/DC buck converter is primarily used in order to control and regulate the working of peripheral systems in an automotive, the voltage from the battery is stepped down in order to power systems like the USB ports and the dashboard interfaces. There are multiple regulators available but in order to assess the feasibility of the available IC’s to the interface, the design characteristics and specifications require stepping down the input voltage from a higher voltage to produce a requirement specific lower voltage and constant output current in amperes. A comprehensive parametric analysis of LM23625 and LM23630 is performed by simulating buck regulators operating at respective switching frequencies.