H, I need help. I am using LM2673-ADJ in configuration Buck Converter to Convert Voltage from Vin=35V to Vout=26V.
I can not to understand why if I use it like linear pre-regulator, therefore in my case before KA278RA05C of Fairchild it does not work, in practice the voltage of buck converter goes down Vout=2.5V, instead if it work without the KA278RA05C it work properly. Can somebody help to me to understand what happen?
Thanks al lot,
raffaele