• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 331 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

Where exactly does the BQ27741-G1 'CVM' status bit come from?

BQ27742-G1: CVM bit: Anybody have a clue what CVM is and why it isn't explained anywhere?

Andrew Greenberg
Prodigy 70 points
Part Number: BQ27742-G1
Other Parts Discussed in Thread: BQ27741-G1

Hi!

In the bq27741-G1 "Protector Status register: 0x6D" (see reference on page 36 of the user guide ( http://www.ti.com/lit/pdf/sluuaa3 ), there's a bit called "CVM", for Cell voltage monitor threshold. The bit says:

1 = Cell voltage monitor threshold detected
0 = Cell voltage monitor threshold not detected

It would be awfully nice to know what the heck this means: there is no documentation that we can find that explains what CVM is. Could someone please explain this bit? Seems important, possibly even critical to cell performance, and yet.. we have no idea what this means?

Thanks!

Andrew