Original question:
Hi support team,
Continuing from the "Original question" above.
Is the VDDCtrl current limit by RTRIP Resistor detected by the Low Side Valley current?
In that case, I think that "(IOUTmax - inductor-ripple-current/2)" is required for the calculation of equation (3), not "IOUTmax".
However, since there is no margin at all with this method, are you calculating with "IOUTmax" for convenience?
Regards,
Dice-K
Hi Dice-K,
I believe the IOUTmax is related to the equation I found in this application note: Know Your Limits
From page 8:
In general, the valley current and the IOUTmax are similar since the second term in this equation is usually small but It looks like IOUTmax already takes into account the valley current.
Regards,
James
Hi James,
Thank you for your reply.
IVALLEY = IOUTmax - inductor-ripple-current/2
The above equation is the same as the following equation (2).
Since "inductor-ripple-current/2" is small,
IOUTmax ≒ IVALLEY
As such, does the equation (3) in the datasheet hold true?
Best regards,
Dice-K
