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http://dx.doi.org/10.7782/JKSR.2012.15.2.116

Radiation Effects on PWM Controller of DC/DC Power Buck Converter  

Lho, Young-Hwan (우송대학교 철도전기정보통신학부)
Publication Information
Journal of the Korean Society for Railway / v.15, no.2, 2012 , pp. 116-121 More about this Journal
Abstract
DC/DC switching power converters produce DC output voltages from different DC input sources. The converter is used in regenerative braking of DC motors to return energy back in the supply, resulting in energy savings for the systems containing frequent stops. The DC/DC converter is composed of a PWM-IC (pulse width modulation integrated circuit) controller, a MOSFET (metal-oxide semi-conductor field-effect transistor), an inductor, capacitors, and resistors, etc. PWM is applied to control and regulate the total output voltage. In this paper, radiation shows the main influence on the changes in the electrical characteristics of comparator, operational amplifier, etc. in PWM-IC. In the PWM-IC operation, the missing pulses, the changes in pulse width, and the changes of the output waveform are studied by the simulation program with integrated circuit emphasis (SPICE) and compared with experiments.
Keywords
DC/DC converter; PWM; PWM pulse; MOSFET; radiation effects;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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