17-07-2012, 04:23 PM
DC-DC Converter
DC-DC Converter.docx (Size: 91.88 KB / Downloads: 32)
AIM:
The goal of this experiment is to design a DC-DC converter using a general purpose Op-Amp and a comparator and study its characteristics. We also aim to study the characteristics of a DC-DC converter integrated circuit; we select the wide-input nonsynchronous buck DC/DC converter TPS40200 from Texas Instruments. This IC is included in ASLKv2010 . Our aim is to design a DC-DC converter with high efficiency using general purpose Op-Amp for a variety of applications like Switched Mode Power Supply (SMPS) and audio amplifier (Class D Power Amplifier) etc.
THEORY:
A function generator, which we studied in Experiment 8, is a basic building block in a DC-DC converter. The triangular output of the function generator with peak amplitude __and frequency is fed as an input to a comparator, whose second input comes from a reference voltage _%¸•. The output of the comparator is a PWM (Pulse Width Modulation) waveform whose duty cycle is given by
Ʈ/T = 0.5 (1-Vref/ VP)
RESULTS:
1. We designed the DC-DC Converter and we have plotted the transient response.