Buck Regulator in L-C Filter Operation

In this lab, students analyze the behavior of the L-C filter subjected to the square-wave voltage generated by a PWM modulated MOSFETs half-bridge. The L-C filter is an important functional element of DC-DC voltage regulator which integrates energy transfer and noise filtering features.
by Dr. Nicola Femia | University of Salerno, and Texas Instruments
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This is lab 6 of 12 in the course, Power Electronics.

LEARNING OBJECTIVES


After completing this lab, students will be able to:
  1. Given a PWM modulated MOSFET half-bridge, an L-C filter, a source voltage, and a load resistance, you will calculate the peak-peak amplitude of inductor ripple current and output ripple voltage, and the converter efficiency, with specified units and accuracy, by applying the appropriate theoretical equations.</span>
  2. Given a PWM modulated MOSFET half-bridge, an L-C filter, a source voltage, and a load resistance, you will simulate the L-C filter behavior to verify the consistency of theoretical predictions, by comparing the simulated and the calculated output voltage under the same operating conditions.</span>
  3. Given a real PWM modulated MOSFET half-bridge, an L-C filter, a source voltage, a load resistance, and a two channel function generator, you will measure the converter efficiency and the peak-peak amplitude of inductor ripple current and output ripple voltage, and you will determine the parameters of the inductor and of the capacitor, with specified units and accuracy.
 

REQUIRED SKILLS

 
  • Basic proficiency using Multisim Live
  • Basic proficiency using ELVIS III Instruments
  • Basic proficiency in circuits and analog electronics

NI ELVIS III

Engineering laboratory solution for project-based learning that combines instrumentation and embedded design with a web-driven experience, delivering a greater understanding of engineering fundamentals and system design.

TI Power Electronics Board for NI ELVIS III

Application board for NI ELVIS III which provides a hands-on approach to power electronics using functional blocks and TI circuits to understand each component in a power electronics system.

Required Software

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Required Hardware

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