Publisher : Institude of Korean Electrical and Electronics Engineers
DOI : 10.7471/ikeee.2016.20.1.103
Title & Authors
Fast Transient Response Techniques for PWM Buck Converter Seok, Jinmin; Suh, Jung-Duk; Kong, Bai-Sun;
PWM buck converters usually use a type-III error amplifier. Since this amplifier has a big capacitor with slow slew rate, they can generate an unintended large overshoot/undershoot at the output when a large load current change occurs. They can also respond slowly by varying the reference voltage. In order to increase battery lifetime, power supplies require a various range of load current and output voltage. PWM buck converter also should have a characteristic of both fast load response and reference tracking. This paper surveys a few recent techniques for reducing the settling time, and discusses their merits and limitations.
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