This is the first BMS I’ve designed for a lithium ion battery pack and I’ve spent quite a while studying the datasheets, TRMs, application notes and EVM documentation for the bq769x0, bq78350-R1 and BQ76200. I eventually figured out most things but I still have some questions regarding a few subjects in the Technical Reference SLUUBD3B. Any help clarifying these things would be very much appreciated
Various
- Please define REST (RELAX) mode. It’s possible to infer what it means from the context and diagrams in the TRM but an exact definition would be preferable.
TRM Chapter 4 Permanent Fail
- Can the bq78350-R1 be taken out of Permanent Fail for post-mortem testing and evaluation purposes?
TRM Chapter 8 Power Modes
- I assume AOLD and ASCD are active during the Sleep Mode, please confirm
TRM Section 11 .1 Device Security, Description
- What access is not available in UNSEALED that is available in FULL ACCESS?
TRM Section 11.5.3 UNSEALED to FULL ACCESS
- What is the “command to go to boot ROM” and what is it used for?
Thank you for your assistance