BQ20Z45-R1: TERMINATE_DISCHARGE_ALARM bit

Sam Ting

Part Number: BQ20Z45-R1

Hi team,

As far as we know, the battery pack in charging should stop discharging, and stopping discharging should clear this bit to 0. but our customer has a battery in hand. When battery pack in charging, the TERMINATE_DISCHARGE_ALARM bit remains at 1,
So is this our misunderstanding on spec, a problem on FW, or is it abnormal in other situations? Thanks!

Best regards,
Sam Ting

over 5 years ago

0 Dominik Hartl11 over 5 years ago

TI__Guru 61536 points

TDA will only reset under specific conditions (check the TRM http://www.ti.com/lit/er/sluu313a/sluu313a.pdf for a full description - the details are beyond the scope of E2E).

Here is the main principle from the TRM: "When a discharging-fault recovery condition is detected, the DSG FET is allowed to be turned on if other safety and configuration states permit, [TDA] flag is reset"

Power management

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BQ20Z45-R1: TERMINATE_DISCHARGE_ALARM bit