Texas Instruments BQ28Z610-R2 User Manual

3.3 Voltage Imbalance at Rest Permanent Fail
The device can permanently disable the battery pack in case of a voltage difference between the cells in a stack
while at rest.
Status Condition Action
Normal
CellVoltage0..1() < VIMR:Check Voltage OR
|Current()| > VIMR:Check Current OR
Δ(CellVoltage0..1()) < VIMR:Delta Threshold
PFAlert()[VIMR] = 0
Alert
Any(CellVoltage0..1()) ≥ VIMR:Check Voltage AND
|Current()| < VIMR:Check Current for VIMR:Duration AND
Δ(CellVoltage0..1()) ≥ VIMR:Delta Threshold
PFAlert()[VIMR] = 1
Trip
Any(CellVoltage0..1()) ≥ VIMR:Check Voltage AND
|Current()| < VIMR:Check Current for VIMR:Duration AND
Δ(CellVoltage0..1()) ≥ VIMR:Delta Threshold for VIMR:Delta
Delay
PFAlert()[VIMR] = 0
PFStatus()[VIMR] = 1
BatteryStatus()[TCA] = 1
BatteryStatus()[TDA] = 1
3.4 Voltage Imbalance Active Permanent Fail
The device can permanently disable the battery pack in case of a voltage difference between the cells in a stack
while active.
Status Condition Action
Normal
CellVoltage0..13() < VIMA:Check Voltage OR
|Current()| <VIMA:Check Current OR
Δ(CellVoltage0..1()) < VIMA:Delta Threshold
PFAlert()[VIMA] = 0
Alert
Any(CellVoltage0..1()) ≥ VIMA:Check Voltage AND
|Current()| >VIMA:Check Current for VIMA: Duration AND
Δ(CellVoltage0..1()) ≥ VIMA:Delta Threshold
PFAlert()[VIMA] = 1
Trip
Any(CellVoltage0..1()) ≥ VIMA:Check Voltage AND
|Current()| >VIMA:Check Current for VIMA: Duration AND
Δ(CellVoltage0..1()) ≥ VIMA:Delta Threshold for VIMA:Delay
PFAlert()[VIMA] = 0
PFStatus()[VIMA] = 1
BatteryStatus()[TCA] = 1
BatteryStatus()[TDA] = 1
3.5 Charge FET Permanent Failure
3.5.1 Description
The device will enter PERMANENT FAILURE mode in case the charge (CHG) FET is not working properly.
Status Condition Action
Normal CHG FET off AND Current() < CFET:OFF Threshold PFAlert()[CFETF] = 0
Alert CHG FET off AND Current() ≥ CFET:OFF Threshold PFAlert()[CFETF] = 1
Trip
CHG FET off AND Current() continuously ≥ CFET:OFF Threshold
for CFET:OFF Delay duration
PFAlert()[CFETF] = 0
PFStatus()[CFETF] = 1
Table 3-1. CFET Data Flash Configuration
Class Subclass Name Type Min Value Max Value
Default
Value
Unit
Permanent Fail CFET OFF Threshold I2 0 500 5 mA
Permanent Fail CFET Delay U1 0 255 5 s
3.5.2 Feature Enable/Disable
The feature is enabled when CFETF is set in Enable PF C.
3.6 Discharge FET Permanent Failure
3.6.1 Description
The device will enter PERMANENT FAILURE mode in case the discharge (DSG) FET is not working properly.
Permanent Fail www.ti.com
20 BQ28Z610-R2 SLUUCO0 – APRIL 2022
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Texas Instruments BQ28Z610-R2 Specifications

General

Brand	Texas Instruments
Model	BQ28Z610-R2
Category	Computer Hardware
Language	English