Other Parts Discussed in Thread: BQ25505
Hello expert,
I have question for TIDA-00488's circuit regarding BQ25505.
In the schematics, this design use 4.12M ohm for Roc2(High side) and 5.78Mohm for Roc1(Low side).
Then, this configuration will achieve 58% MPPT. But schematics said it will be 79.4%.
Moreover, user's guide calculate MPPT by following formula.
・(Roc2+10M)/(Roc2+Roc1+10M)
However, I cannot found this additional 10M ohm register between not only R1 and VIN_bq but also R2 and GND.
Then would you answer following question?
・Where is this additional 10M register?
・Does this circuit truly achieve 79.4% MPPT?
・Would you explain why this circuit achieve 79.4% MPPT if above question's answer is yes?
I'm looking forward to hearing back from you.
Best regards,
Kazuki Kuramochi