ElectronicBits 8 Demystifying losses in switched capacitor converters SCC

A presentation by Prof. Sam Ben-Yaakov in which the source of power loss in switched capacitor converters (SCC) is explained.This clip was first posted in 2010 at "BenGurionUniversity power electronics" channel

[chenhu]

Thanks for sharing. In summary, sometimes one can think of not fully charge a Cap to obtain smaller charge sharing loss and switching loss.

[binong]

Very nice video, thank you professor!

[susheelkoushik]

Thanks for the lecture, But at 15:58 you said increasing Re increases efficiency. I did not get that. As per your efficiency equation, Re in the denominator and increasing Re must decrease the eff right?

[xinmiaoxu]

I would appreciate a lot if you could share the references that show the derivation of Re at 13:00. I tried by myself but failed...

[xinmiaoxu]

Thanks for the lecture. I have a question. At 4:11, at the second state, how do you define Vc1? how do you know Vc1 is still VDD? (Did you assume C1 is very large so small ripple approximation applies?)

BTW: The switched capacitor converter looks so peculiar!

[hsharghi]

Thanks Sam Ben-Yaakov. One question for you. How would you calculate the RMS current for a switched capacitor converter?

[Chupacabras]

Page 7. Assume we have ideal capacitors (zero ESR). Where will the energy (delta E) go?