2022-12-28 01:53 AM
Hi,
About gas gauge ic stc3115,
I would like to consult how RINT(Internal battery impedance in mOhms) value to influence the OCV?
Recently I tested 2 RINT value, 2000mOhm and 360mOhm,
(charging by usb 5V, 100mA)
360m:
https://drive.google.com/file/d/1STe4wUmKKgzWn_lZpdNo6QRxA0oKnmTP/view?usp=share_link
2000m:
https://drive.google.com/file/d/1zhYRYxEmUz92UEBJCklmmahbxgNk694H/view?usp=share_link
the OCV of 360m is close to voltage during charging,
and drop quickly once stop charging,
the OCV of 2000m is obviously more stable,
I know RINT should be measured by specific way,
and the 2000mOhms is the measured result,
here I just curious and like to know
how the single value RINT to influence stc3115 to detect the OCV value?
p.s.
OCV_OFFSET_TAB is all zero,
VMODE is mixed mode.
Thanks~