Title :
A novel linear-nonlinear technique for fast transient buck converter
Author :
Saad, Mohamed ; Orabi, Mohamed ; Hasaneen, El-Sayed ; Lotfi, Ashraf
Author_Institution :
APEARC, South Valley Univ., Aswan, Egypt
Abstract :
Modern Portable devices require high performance Power Management Integrated Circuits (PMICs) for powering it. Old requirements for PMICs were high efficiency and small footprint area. However there are some applications that are also sensitive for the output voltage deviations due to sudden step-up and step-down load change. A novel nonlinear control technique that can be used side-by-side with the conventional voltage-mode linear control is proposed here. The new technique minimizes both undershoot; overshoot percentages and the transient time. It is proven by results that this new technique can help in using smaller output capacitors Co which save the PCB area.
Keywords :
capacitors; nonlinear control systems; power convertors; power integrated circuits; printed circuits; voltage control; PCB area; fast transient buck converter; linear-nonlinear technique; nonlinear control; output capacitors; output voltage deviations; portable devices; power management integrated circuits; step-down load change; step-up load change; transient time; voltage-mode linear control; Monitoring; buck converter; fast transient; linear; nonlinear; overshoot; undershoot;
Conference_Titel :
Telecommunications Energy Conference (INTELEC), 2011 IEEE 33rd International
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4577-1249-4
Electronic_ISBN :
2158-5210
DOI :
10.1109/INTLEC.2011.6099810
