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
This is lab 6 of
12 in the course,
Power Electronics.
LEARNING OBJECTIVES
After completing this lab, students will be able to:
- 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>
- 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>
- 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
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
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
Download Academic Software, Learn About Software Licensing- NI ELVIS III Soft Front Panel Support - Install Instructions
- Measurements Live - Access
- Multisim Live (Some circuits require premium access) - Access; Learn about Premium
- TI Power Electronics Board Configuration Utility Download
Required Hardware
Purchase Engineering Education Products- NI ELVIS III - View User Manual & Specifications
- TI Power Electronics Board for NI ELVIS III - View User Manual & Specifications
INSTRUCTOR RESOURCES
Instructor resources are available. Get access
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