# Boost Converter Design Formulas

I have a boost converter. Vin=10-16V Vout =23V Iload=250mA. Fsw=125kHz

NCV3063

I have a Boost converter App note from TI. Boost Converter TI App note

I tried to design my boost converter circuit using the formulas provided from the app note as I was not able to understand the formulas provided in my NCV3063 Boost Converter datasheet.

Can I use the App note formulas to design my boost converter inductor?

Why are there different formulas for the same boost converter topology?

Thanks.

I followed that Application note from TI once, back in 3rd semester, worked like a charm.

Can I use the App note formulas to design my boost converter inductor?


No I would not mix and match two different manufactors design notes.

Why are there different formulas for the same boost converter topology?


Many ways leads to Rome :) Sorry for the vague answer, I'm not entirely sure. But I'm fairly confident the result should be the same if its the EXACT same topology.

• Ok. Can you tell me which graph in the NCV3063 datasheet I should refer to, to calculate the value of VSWCE for my design input and output? – Newbie Aug 2 '19 at 6:28
• 9. VSWCE − Darlington Switch Collector to Emitter Voltage Drop, refer to Figures 7, 8, 9 and 10. depending on your configuration – Sorenp Aug 2 '19 at 6:44
• but those graphs are given for Vcc=5V. My Vcc is not 5V. It is 10V. and which graph in specific and why? – Newbie Aug 2 '19 at 7:06
• If you are trying to use a design that is not meant for your specifications you are in for a bad time :( .. I suggest you write down all your requirements and search for an alternative chip that can live up to those requirements. ti.com/product/LM25118 try this .. and use the Design bench tool TI provides. – Sorenp Aug 2 '19 at 8:09