A study on radiation effects on PWM-IC controller of DC/DC power buck converter

Author

Young Hwan Lho ; Yeu Sung Hwang ; Sang Yong Lee

Author_Institution

Dept. of Railroad Electr. & Inf. Commun., Woosong Univ., Daejeon, South Korea

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

1754

Lastpage

1757

Abstract

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. PWM is applied to control and regulate the total output voltage. It is shown that the variation of threshold voltage at MOSFET and the offset voltage increase caused by radiation effects make the PWM pulse unstable. Radiation gives the main influence on the changes in the electrical characteristics of PWM-IC and MOSFET. In the PWM operation, the missing pulses, the changes in pulse width, and a change of the output waveform are studied by the simulation program with integrated circuit emphasis (SPICE) and compared with experiments.

Keywords

DC-DC power convertors; MOSFET circuits; PWM power convertors; SPICE; circuit simulation; control engineering computing; power capacitors; power inductors; voltage control; DC-DC power buck converter; MOSFET; PWM pulse unstability; PWM-IC controller; SPICE; capacitor; inductor; integrated circuit emphasis; metal-oxide semiconductor field effect transistor; offset voltage; pulse width modulation-integrated circuit controller; radiation effects; simulation program; threshold voltage variation; total output voltage regulation; Pulse width modulation; Switched-mode power supply; DC/DC buck converter; MOSFET; MOSFET Drive IC; OP-Amp.; PWM-IC; SMPS; radiation effects; radiation hardening;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation and Systems (ICCAS), 2013 13th International Conference on

Conference_Location

Gwangju

ISSN

2093-7121

Print_ISBN

978-89-93215-05-2

Type

conf

DOI

10.1109/ICCAS.2013.6704221

Filename

6704221