Analysis of efficiency optimization for PFM mode switching DC-DC boost regulator

Author

Ahmed, Khondker Zakir ; Islam, Moakhkhrul ; Bari, Syed Mustafa Khelat ; Islam, Didar ; Hafiz, Mohiuddin ; Khosru, Quazi Deen Mohd

Author_Institution

Power IC Ltd., Dhaka

fYear

2008

fDate

20-22 Dec. 2008

Firstpage

195

Lastpage

198

Abstract

A mathematical analysis of efficiency optimization for PFM (pulse frequency modulation) mode boost regulator has been presented in this paper. Based on the load demand, input voltage and output voltage a PFM mode booster can operate in single pulse or multi pulse operation. The presented analysis reveals a relationship between operating efficiency and mode of operation considering the external and internal parameters for which loss occurs. This paper also presents a relationship between maximum load delivering capacity and inductor size where separate modes of operation are distinguished.

Keywords

DC-DC power convertors; optimisation; pulse frequency modulation; switching convertors; PFM mode switching DC-DC boost regulator; efficiency optimization; inductor size; mathematical analysis; maximum load delivering capacity; multipulse operation; pulse frequency modulation; Frequency modulation; Inductors; MOS devices; Power engineering and energy; Pulse modulation; Pulsed power supplies; Regulators; Schottky diodes; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2008. ICECE 2008. International Conference on

Conference_Location

Dhaka

Print_ISBN

978-1-4244-2014-8

Electronic_ISBN

978-1-4244-2015-5

Type

conf

DOI

10.1109/ICECE.2008.4769199

Filename

4769199