LT8330, documentation p.17 has a reference circuit of 48V Boost Converter.
Duty cycle is ~94%. A max allowed duty cycle is ~84% even for 65 ns On-Time.
Is this circuit correct?
The table defines On-Time for Vin = 24V.
If On-Time has another value for Vin = 3V, where can I find this value?
Thank you for your answer!
Ok. I see on p.9:
"If the above duty cycle calculations for a given application violate the minimum and/or maximum allowed duty cycles for the LT8330, operation in discontinuous conduction mode (DCM) might provide a solution."
1) How can I understand that DC/DC converter can work with desired Vin.min/Vin.max and Vout in DCM mode?
2) I don't see a design algorithm for DCM mode in the documentation.
"first step is to determine the charge in the inductor during the switch off time: q ~ IOUT/(fsw*efficiency)"
In design time I don't know IOUT. I have to calculate max reached Iout for the given Vin.min and Vout.
3) How should I choose between the CCM or DCM modes?