Buck Regulator Half-Bridge PWM Operation

This is lab 5 of 12 in the course

by Dr. Nicola Femia | University of Salerno, and Texas Instruments

In this lab, students investigate the behavior of MOSFETs when configured as a half-bridge in PWM operation. This circuit element is used in switching power supply applications for high-efficiency DC-DC voltage conversion.

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Details

LEARNING OBJECTIVES

After completing this lab, students will be able to:

Calculate the PWM control voltage required to achieve a desired output voltage and the conversion efficiency of the half-bridge in different operating conditions, with specified units and accuracy.
Simulate the half-bridge behavior to verify the consistency of theoretical predictions, by comparing the simulated and the calculated output voltage under the same source voltage and a load resistance conditions.
Determine the PWM control voltage needed to achieve a desired output voltage, the duty-cycle, the efficiency and the MOSFET on-state resistance, 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

Requirements

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. Learn more

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. Learn more

DETAILED REQUIREMENTS

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

Resources

INSTRUCTOR RESOURCES

Instructor resources are available. Get access

OTHER RESOURCES

Download Configuration Utility for the TI Power Electronics Board