Tool/software:
Good morning,
please I need help with this problem:
I have BQ25895 set in OTG mode and I use boost.
I am not using VBUS yet, so there is no voltage on VBUS.
I use the default registry settings.
Electronics schematics are as follows see attachment schema page-19.
1.
PMID without load
BQ25895 has large voltage drops even without load see attachment PMID-osciloscop (free_load).
these peaks reach up to 1.5V.
How can I remove the problem spikes ?
2.
PMID with 360mA - looks okay
PMID-osciloscop (360mA_load).
3. PMID more than 400mA - chip OFF
If I connect a load (more than 400 mA), the chip detects the drop and turns off.
Due to peaks see point 1 there will be a voltage drop and BQ25895 detects a shutdown.
How can I remove the problem ?
Thank you and have a nice day
Tom
