Boost Converter Critical Inductance Value

Deriving the critical inductance value for the boost converter. The critical inductance is for operation in boundary conduction mode (BCM). A larger inductance will operate in continuous conduction mode (CCM) and a smaller inductance will operate in discontinuous conduction mode.
[Corrected video]

[@viniciusaparecidodossantos7931]

Amazing explanation ! Thanks for sharing your knowledge !

[@lakshmisyamalambaviswanadh9224]

Thanks for helping us

[@sandhoshkumargs7967]

thank you 🤗🤗

[@mckenziekeith7434]

Great video. When estimating input current, would you recommend considering efficiency of the regulator? Or just assume 100% as in this video?

[@ryechwd8007]

Thank you very much..Ms: K.K.S

[@danielm3895]

Hi, quick question. If you reduce or increase the L, wont the slope just have different angles?
You still get BCM, but output current will vary?

[@spk0988]

Hi Daniel my understanding is that larger inductor u have, during switch off condition more energy is pumped into output capacitor for longer duration as large energy is stored in inductor. If u have smaller inductor, inductor would loose its energy before the next switch on condition. Hence smaller inductor leads to discontinuous-CM

[@spk0988]

Inductor value greater than min. Or critical inductor value will always ensure its in CCM.

[@niizumashiiori6402]

I have a question ma'am, how is the rise of the inductor current a triangle/linearly rising? Shouldn't it be raising like in transient RC circuits? I'm having problems working with that.

[@niizumashiiori6402]

And of it is rising in a transient way, how can we determine the rise of current in the inductor? Because at T-on the inductor is just connected to the DC voltage with no resistance to speak of; except perhaps the wire resistance. How can we then find the final current if so?