About this course: Learners will design a DC-DC converter that powers USB-C devices (20 V at 3 A) from a dc input voltage source such as a lithium-ion battery pack or a desktop computer power bus. Aspects of the project will include: ● Design of converter power stage and magnetics. Requires mastery of courses 1, 2, and 5. ● Simulation to verify correct steady-state operation. Requires mastery of courses 1, 2 and 4. ● Design of converter control system. Requires mastery of courses 3 and 4. ● Simulation to verify correct control system operation. Requires mastery of courses 3 and 4. ● Preparation of milestone reports documenting the design and its performance The reports will be peer graded.
Who is this class for: This course is primarily aimed at professional electrical engineers or electrical engineering graduate students, who need to design or understand switching regulator systems.
Created by: University of Colorado Boulder
Taught by: Dr. Robert Erickson, Professor
Electrical, Computer, and Energy Engineering
Taught by: Dr. Dragan Maksimovic, Charles V. Schelke Endowed Professor
Electrical, Computer and Energy Engineering
Taught by: Dr. Khurram Afridi, Assistant Professor
Electrical, Computer and Energy Engineering
| Basic Info |
Course 6 of 6 in the
Power Electronics Specialization.
|
| Level | Intermediate |
| Commitment | 6 weeks of study, 6-10 hours/week |
| Language | English |
| How To Pass | Pass all graded assignments to complete the course. |
| User Ratings |
Syllabus
WEEK 1
Introduction and Power Stage Design
Select a converter circuit approach for the bidirectional dc-dc converter to interface a lithium-ion battery pack to a USB load. Begin the design of the power stage components and LTspice simulation.
4 videos, 3 readings
WEEK 2
Power Stage Design and Documentation
Finish the design of the power stage components and the converter power stage LTspice simulation. Document your steady-state converter design for submission of Milestone 1.
Graded: Power Stage Design
WEEK 3
Preliminary Controller Design
Develop an averaged model of your power converter. Select a control approach (voltage mode, peak current mode, or average current mode control), and begin the design of the control loop(s) to meet requirements on crossover frequency and maximum closed-loop out...
1 video, 2 readings
WEEK 4
Preliminary Controller Design and Documentation
Complete development of an averaged model of your power converter, its control loop(s), and an LTspice averaged simulation. Document your control circuit design for submission to Milestone 2.
Graded: Preliminary Controller Design and Documentation
WEEK 5
Complete Design
Begin development of an LTspice switching model of your closed-loop converter system, to verify that your system meets load current transient requirements. Improve your design as necessary. Begin addition of current limiting to your circuit.
1 video, 2 readings
WEEK 6
Complete Design and Documentation
Complete development of an LTspice switching model of your closed-loop converter system, and verify that your system meets load current transient requirements. Complete the addition of current limiting to your circuit, to prevent inductor saturation during tra...
1 reading
Graded: Final Design Documentation and Tests
FAQs
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Coursework
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Creators
University of Colorado Boulder
CU-Boulder is a dynamic community of scholars and learners on one of the most spectacular college campuses in the country. As one of 34 U.S. public institutions in the prestigious Association of American Universities (AAU), we have a proud tradition of academic excellence, with five Nobel laureates and more than 50 members of prestigious academic academies.
Pricing
| Audit | Purchase Course | |
|---|---|---|
| Access to course materials | Available | Available |
| Access to graded materials | Not available | Available |
| Receive a final grade | Not available | Available |
| Earn a shareable Course Certificate | Not available | Available |
Ratings and Reviews
Very helpful,thanks all of the people in this course.
Gained a lot of hands on experience from this capstone project. Great supervisors and the peers were also helpful. Thank you CU Boulder
The whole specialization series is definite a 5 star Coursera course. As a electrical engineer designing lab and industrial use power supplies, I found the material in this class review and enhance my knowledge, and more importantly, a systematic view of DC-DC converter concepts, which is a good reference of my future career.
The book those professors wrote is called "bible" in the power electronic industry, and most of the interviewers will ask questions related to the material in that book when you take a job interview in this industry, especially for an entry level or junior position. Watching the videos and doing the homework and final project help me understand those material more efficiently.
The six classes are still too short for all the material. Some good techniques such as soft-start, snubber, and input filtering may be added, even as an optional video. And I am also looking forward to some advance classes with the material like digital control, resonant (LLC) and soft switching, which is popular and widely used in the industry recently.
About this final capstone design project, it leads me through the procedure: transfer the requirement to topology selection -> open loop design -> linear modeling and ac analysis -> final time domain analysis. Further, the requirements are well designed so that I need to make trade-offs during these procedure. It takes me quite a while to do the tweaking and simulation iteration, but I found it is a good practice. This is the real life of an engineer!
I appreciate the great work from all three professors!
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Good design projects, but very difficult at some times