SN6507: R_ILIM

Tool/software:

Hi TI Team

I have a question regarding R_ILIM with the SN6507. I have an EVAL-board from WE and have tested a few different parts here and there. The only thing I don't understand is the R_ILIM. I used a 68k resistor which should give me a little bit more then 300mA current limit at 24V. But it starts limiting at about 150mA. Is this behavior correct? Do I need to choose a value allowing twice the current (should I go for 68k)?

Can you give me an example of how to choose this resistor correctly. If I want to have 24V at the output with 3W and my Input voltage is 24V. Transformer is 1:1.07. What would be the correct R_ILIM?

Thank you in advance.

Regards Theo