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http://dx.doi.org/10.7471/ikeee.2014.18.1.128

Hysteretic Buck Converter with Thermister to Improve Output Ripple Voltage  

Lee, Dong-Hun (Dept. Electronic Engineering, INHA University)
Yoon, Kwang-Sub (Dept. Electronic Engineering, INHA University)
Publication Information
Journal of IKEEE / v.18, no.1, 2014 , pp. 128-133 More about this Journal
Abstract
This paper suggest hysteretic buck converter using thermistor that can improve output ripple voltage according to temperature to improve. In case of high temperature where circuit is sensitive, it decides two comparable voltages high. And, in case of non-high temperature where circuit is stable, it decides two comparable voltages low, then it minimizes output ripple voltage. simulation result what is included in this paper describe that output ripple voltage is reduced more than 30mV by using suggested converter, and load regulation was 0.011mV/mA. Suggested circuit is suitable to power managing circuit that operate digital circuit requiring fast response and low power.
Keywords
hysteretic buck converter; ripple reduce controller; ripple voltage; sample and hold; thermistor;
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