A novel techniques for step down converter implemented by high voltage operational amplifier

Author

Tripetch, Kittipong

Author_Institution

Div. of Electron. & Telecommun. Eng., Rajamangala Univ. of Technol. Suvarnabhumi, Muang, Thailand

fYear

2012

fDate

20-22 June 2012

Firstpage

287

Lastpage

292

Abstract

This paper introduces techniques which can be used to step down input voltage. It is different from traditional idea which use duty cycle concept. By using frequency domain concept low pass active filter can be used to step down input voltage. While high pass active filter can be used to step up output voltage. High precision supply voltage at 1mV step can be generated by the proposed techniques without the series resistor and switches more than 1000 pieces if the cut off frequency of the filter is accurate enough. If the input voltage is not as high as 15 volt, op-amp model LF353 can be used to implement step down converter.

Keywords

active filters; frequency-domain analysis; high-pass filters; low-pass filters; operational amplifiers; power convertors; LF353 op-amp model; duty cycle concept; frequency-domain concept; high-pass active filter; high-voltage operational amplifier; low-pass active filter; series resistor; step-down converter; voltage 1 mV; Active filters; Operational amplifiers; Phase locked loops; Pulse width modulation; Voltage control; Voltage measurement; Buck-Boost converter; Cuk converter; ac to dc converter; step up and down converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on

Conference_Location

Sorrento

Print_ISBN

978-1-4673-1299-8

Type

conf

DOI

10.1109/SPEEDAM.2012.6264519

Filename

6264519