Title :
Steady state analysis of two stage converter combined with coupling capacitor
Author :
Otsu, Shohei ; Sato, Terukazu ; Nabeshima, Takashi ; Nishijima, Kimihiro
Author_Institution :
Fac. of Eng., Oita Univ., Oita, Japan
Abstract :
In order to have a power supply with high voltage conversion ratio for low voltage and high current digital ICs, this paper presents a new two stage converter combined with a coupling capacitor. A bottom switch of the first stage is removed and the switching nodes of the first stage and the second stage are coupled together by the coupling capacitor. The steady state analysis is performed and the voltage conversion ratio is derived which is found to be larger than single stage converter. A 12 V to 1 V prototype converter is implemented to confirm the analysis. The higher power efficiency compared with conventional converter is achieved.
Keywords :
capacitors; coupled circuits; integrated circuits; network analysis; power convertors; coupling capacitor; digital IC; high voltage conversion ratio; steady state analysis; two stage converter; voltage 1 V; voltage 12 V; Capacitors; Coupling circuits; Filters; Inductors; Low voltage; Power engineering and energy; Power supplies; Steady-state; Switches; Switching converters;
Conference_Titel :
Telecommunications Energy Conference, 2009. INTELEC 2009. 31st International
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-2490-0
Electronic_ISBN :
978-1-4244-2491-7
DOI :
10.1109/INTLEC.2009.5351915
