Other Parts Discussed in Thread: TPS62813, LM20143
Tool/software:
Hello
I would like to have precision regarding the calculation used for the Inductance in the datasheet and in the LM20143DESIGN-CALC.
The formula given is :
Our data are the following :
Vin = 3.3V
Vout = 2.5V
F_sw = 755kHz
Iout = 0.3A
D = Vout / Vin = 0.75
Therefore L should be included : 5.35uH and 10.7uH
However on the LM20143DESIGN-CALC : the value recommanded for L is : 0.9uH.
I also tried to simulate with Webench and the Self recommanded is also around 1uH.
How is it calculated ? Which formula is used to get these values ?
Thanks in advance,
Regards,
Florent