A Study on TID and SEL tests on PWM-IC Controller of DC/DC Power Buck Converter

Abstract

The radiation hardening parts in space systems should be used since there exist various kinds of radiation particles in space environment. The radiation technology is very important for the localization of electronic parts for the next generation of satellites to come. The 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 pulse width modulation-integrated circuit (PWM-IC) controller, a metal-oxide semiconductor field effect transistor (MOSFET), an inductor, and a capacitor, etc. The PWM is applied to control and regulate the total output voltage. Radiation has the major influence on the changes in the electrical characteristics of PWM-IC. In PWM operation, the missing pulses and the changes in pulse width are studied by the simulation program with an integrated circuit emphasis (SPICE), Total Ionizing Dose (TID) and Single Event Latch-up (SEL) tests are accomplished and analyzed.

Comparison of DC-DC converters for solar power conversion system

“…The circuit is designed in MATLAB/Simulink. The PV modules integrated with DC-DC converters are classified into two groups: full power and partial power conversion and full power conversion [26]. The DC-DC converters can be cascaded with PV modules [27].…”