I try to make 3.3V to 5V boost circuit.
For inductor part, it is written that a 4.7μH inductor is recommended for most
1.3MHz applications and a 10μH inductor is recommended for most 700kHz applications.
For table1-Component Selection, It’s not mentioned 3.3V to 5V case, so I used DC-DC Designer Online simulation.
However, When I simulate it, L1 shows 3.6uH. can I use it at 1.3Mhz??
Also Can I just follow C3=10nF,C5=5.6pF,R3=40.2k??
Hello @sangho7.lee ,
The larger the difference between Vout and Vin, the larger the inductor recommended. Also, if using a larger switching frequency, a smaller inductor can be used.
That said, the values that the DCDC designer give you are good to use. Any inductor 3.6uH or greater should work for you application, assuming you use the 1.3MHz mode. You can use the compensation values given to you by the DCDC designer tool too.
Regards,
Jonathan Hidalgo
