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http://dx.doi.org/10.5139/JKSAS.2013.41.1.79

TID and SEL Testing on PWM-IC Controller of DC/DC Power Buck Converter  

Lho, Young Hwan (Department of Railroad Electricity System, Woosong University)
Hwang, Eui Sung (Department of Railroad Electricity System, Woosong University)
Jeong, Jae-Seong (KETI)
Han, Changwoon (KETI)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.41, no.1, 2013 , pp. 79-84 More about this Journal
Abstract
DC/DC switching power converters are commonly used to generate a regulated DC output voltage with high efficiency. The DC/DC converter is composed of a PWM-IC (pulse width modulation-integrated circuit) controller, a MOSFET (metal-oxide semiconductor field effect transistor), inductor, capacitor, etc. It is shown that the variation of threshold voltage and the offset voltage in the electrical characteristics of PWM-IC increase by radiation effects in TID (Total Ionizing Dose) testing at the low energy ${\gamma}$ rays using $^{60}Co$, and 4 heavy ions applied for SEL (Single Event Latch-up) make the PWM pulse unstable. Also, the output waveform for the given input in the DC/DC converter is observed by the simulation program with integrated circuit emphasis (SPICE). TID testing on PWM-IC is accomplished up to the total dose of 30 krad, and the cross section($cm^2$) versus LET($MeV/mg/cm^2$) in the PWM operation is studied at SEL testing after implementation of the controller board.
Keywords
DC/DC buck converter; radiation effects; PWM-IC; TID; SEE; SEL;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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