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Learner Reviews & Feedback for Converter Circuits by University of Colorado Boulder

947 ratings
188 reviews

About the Course

This course can also be taken for academic credit as ECEA 5701, part of CU Boulder’s Master of Science in Electrical Engineering degree. This course introduces more advanced concepts of switched-mode converter circuits. Realization of the power semiconductors in inverters or in converters having bidirectional power flow is explained. Power diodes, power MOSFETs, and IGBTs are explained, along with the origins of their switching times. Equivalent circuit models are refined to include the effects of switching loss. The discontinuous conduction mode is described and analyzed. A number of well-known converter circuit topologies are explored, including those with transformer isolation. The homework assignments include a boost converter and an H-bridge inverter used in a grid-interfaced solar inverter system, as well as transformer-isolated forward and flyback converters. After completing this course, you will: ● Understand how to implement the power semiconductor devices in a switching converter ● Understand the origins of the discontinuous conduction mode and be able to solve converters operating in DCM ● Understand the basic dc-dc converter and dc-ac inverter circuits ● Understand how to implement transformer isolation in a dc-dc converter, including the popular forward and flyback converter topologies Completion of the first course Introduction to Power Electronics is the assumed prerequisite for this course....

Top reviews

May 22, 2020

A really good course on converter circuits. The way Dr. Erickson synthesized inverters from buck converters was eye opening. Many lectures overlook such basic aspects of power electronics synthesis.

Jul 14, 2018

The course has intensified my interest towards the field of Power Electronics. One won't find such systematic and lucid teaching anywhere else. I am grateful to the instructors of the course.

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151 - 175 of 182 Reviews for Converter Circuits

By Anik H T

Jul 11, 2021



Jan 26, 2021


By Ankita K

Mar 17, 2021



Jun 29, 2020


By Hwasoo S

Apr 14, 2018


By Musaib S

Dec 30, 2016


By Jay B

May 16, 2019

Good stuff here, Homework really have you thinking.

Lots of pros & cons:

Math formulas are either wrong or right, no partial credits. So, you could actually have the correct answer on paper but its not inputted how the website would detect it then its graded as incorrect.

Good news is you get multiple re-sits.... bad news is if you have a concept wrong and/or input is incorrect then the re-sits are of no use until you figure out the typo or whats wrong with your reasoning.

Bad news - understanding is limited to what the video says, no matter how many times you repeat it. Good news, supplemental reading on google is fair enough to help you get over most hurdles.

Bad news - some homework questions aren't exactly straightforward from the notes.... but, SUCH IS LIFE. Its the same as you local college so dig in and go figure it out, somehow and make use of the re-sits.

Overall, good job. I have learnt a lot and hope I can make it to the end. Looking forward to the design project, nothing beats putting it to life in a "real world application" after torturing with so many formulas and theories.

By Guillaume V

Jun 4, 2017

Course 2, Converter Circuits, is as interesting as was Course 1. You can stop, have a rest and retake the course. The work load varies from week to week. You learn the famous converter flyback and forward.

Course 1 is enough if you just want to know what a converter is. But for a real knowledge, I think one must do the other courses of the power electronics specialization, that is to say course 3, 4, 5 and 6. Still a lot of work to come!


May 25, 2019

Excellent way to understand the power converters and its relation

most liked topic was -interchange of load and source and realize a converter out of it

but for the flyback and forward it was touch disappointing the lecture did not go well as expected

we need more details in solving the volt-sec balance and charge balance for both converters in detail

By Milind R

May 31, 2021

V​ery interesting topics, nice analysis. However, the idea of using current-balance into a transformer when not explicitly using AC should have been better explained, it kept going against my instincts to try a full time-domain solution with differential equations. The last week (week 4) contents were also pretty difficult.

By Kaushik M

Aug 10, 2020

The lectures were decent. Assignments were good and interesting to solve. But the only gripe about assignments is that mathematical analysis is way too lengthy at some places as well as I feel (though very few) answers fed to the computer were incorrect. Overall, a decent course


Jul 13, 2020

Very good training, addressing the main DC/DC converter topologies, including transformer isolation. I would have liked the switch realization section to be shorter; but other than that, it was really useful.

Thansk Proffesor Robert Erickson.

By Elyka A

May 6, 2016

Very good, but some topics may need to be explained further, like the realization of the switches

By Aleena A

Apr 5, 2020

Quite tough a chapter and module but if you understand the concepts its easy to do !


Aug 30, 2020

the last assignment solutions should be provided, rest was good.

By Jairo Z

Dec 2, 2017

The last questionary is a little bit difficult

By Andres H

Sep 11, 2018

I wish we had more LTSpice experiments

By Richard O

Oct 8, 2019

Difficult, but useful and fulfilling.

By Srinath M

Dec 13, 2017

Discussion forum is practically dead

By Prakash K

Jul 31, 2020

very interesting course

By Usman R

Jul 4, 2017

Very nice course

By kaliyappan k

May 9, 2021


By Andrew W

Apr 4, 2021

The course is challenging for people without electrical engineering background as noted in the course prerequisite. A review of circuits is advisable, if you have not touched on the basics for a while.

I strongly advise to keep good notes, including homework/quiz assignments. They help as reference as you move through the course.

The course material and homework assignments could be better aligned. This is after all not a university level course, so I think it should not create situations where you have to spend a lot of time researching information outside the course material. I had to invest significantly more time then shown in the Course time estimates.

If you plan to take all courses in the specialisation, investing in the Dr Erickson's text book is not a bad idea, but is not an absolute must.

But if you get through, there is definitely a sense of accomplishment and I personally feel satisfied with the knowledge gained as an introduction to converter circuits.

By Jacky H

Feb 7, 2018

Honestly, the assignments are unnecessarily cumbersome. As an EE student in university, I have learned some contents of power electronics in my own Syllabus, and found this course a good review as well as a source of insights. For a pure enthusiast, I guess this course will be somehow difficult and hard to fully enjoy.

By Mack R

Nov 10, 2021

Frustrated throughout the course with the homework system. Please implement a system that provides helpful feedback and more worked out examples.