I was testing with no external load and the charger was managing to draw 160W from the wall which translates to about 6-7A which it shouldn't get close to.
what external load
i'm a bit confused here - i think the XL4015 charger drops AUX SUP and does both charging and supplying the external load connected to the source pin on the
Primary P-MOS - the LTC4412 likely can't cause the additional 4A to be drawn by XL4015 . . . unless it's due no load present at all (usually the 10% of intended avg. or max.
should be present coz many supplies assume the load being present to get to their rated output)
if your 6-7A is likely some X-mode feedback from battery through both FETS _b_a_c_k_ to auxiliary input -- then you should never done that (might blow your equipment before you even notice)
my mistake -- the "min. load" for sure is a "no load" but the voltage at pin 6 of LTC4412 (the same as the source pin on the
Primary P-MOS) goes where with nothing connected there
in some other case i'd considered coupling off the AUXsup and charger ... #!¤"¤&#%/ as in fig.
-- if it's not too much of a voltage drop
edit: ha! it'is a correct figure (anyways to confirm)
-- you must find the correct values of L , C for your need -- i just picked 'em up
from the thin air here !!!
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