charge current oscillated enter into CV mode; oscillated caused by switch to PFM mode?
charge current decrease to 0.13A, start oscillated;
add the load to system higher than 0.25A, charge current not oscillated.
we debugs several ways:
(1) increase the system side capacitors 2X47uF +10uF, no big difference;
(2) disable the 25kHZ limit by 0X12[10], charge current oscillated with fix 25kHz, oscillated still existed;
is there some rules for the COMP1 and COMP2 RC net ? how to choose the R and C value?
the RC net of COMP1 and COMP2 will cause the oscillation with light load ??
or some other solutions to fix the current problem with light load?
the issue attached, FYI.
wish your reply ASAP,
Thanks
BR
Jelly
