Post Go back to editing

LT6110 Do not compensate with LT317 Adjustable regulator

Hi,

I have a problem where iam trying to use the LT6110 cable drop compensator with a LT317 Adustable Regulator. Where I do not succeed with the cable drop compensation.

The setup is like in the typical application LT6110 datasheet for the cable/wire drop compensation.

Below are my calculations:

Vdrop=1A *10 Ohm=10V

Vsense= 20m Ohm*1A = 20mV

I have a 10 Ohms resistor in series on line + and a load of 1A. 

Since Iin=Iout=100uA

Rin = Vsense/Iin=20mV/100uA=200 Ohms

Rref=12.5k Ohm

Rg=340M Ohms

Still i do not get any compensation of the wire drop.

Have measured Iout which is apporx 95uA. Also measured the Vref which is when having a load 1.44V but max shall 1.3V.


Can you please help and advise?

Best

Mario

Before You Switch


Switching languages will make ADI Explorer unavailable. Resume your session by switching back to English and reopening ADI Explorer.