Texas Instruments bq78350-R1 Technical Reference

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SLUUBD3D–September 2015–Revised September 2018
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Contents
4.6 Safety Overcurrent in Charge Permanent Fail ......................................................................... 37
4.7 Safety Overcurrent in Discharge Permanent Fail ...................................................................... 38
4.8 Safety Overtemperature Cell Permanent Fail .......................................................................... 38
4.9 Safety Overtemperature FET (SOTF) Permanent Fail ................................................................ 38
4.10 Voltage Imbalance at Rest Permanent Fail............................................................................. 39
4.11 Charge FET Permanent Fail.............................................................................................. 39
4.12 Discharge FET Permanent Fail........................................................................................... 39
4.13 External Override Permanent Fail........................................................................................ 40
4.14 AFE Register Permanent Fail............................................................................................. 40
4.15 AFE Communication Permanent Fail.................................................................................... 41
4.16 AFE XREADY Permanent Fail ........................................................................................... 41
4.17 Instruction Flash (IF) Checksum Permanent Fail ...................................................................... 41
4.18 Data Flash (DF) Permanent Fail ......................................................................................... 41
4.19 Open Thermistor Permanent Fail (TS1, TS2, TS3).................................................................... 42
4.20 PF Status Snapshot Data Flash.......................................................................................... 42
4.20.1 Device Status Data .............................................................................................. 42
4.20.2 Device Voltage Data ............................................................................................. 43
4.20.3 Device Current Data ............................................................................................. 44
4.20.4 Device Temperature Data....................................................................................... 44
4.20.5 AFE Regs ......................................................................................................... 44
4.21 Black Box Recorder........................................................................................................ 44
4.21.1 Black Box Recorded Data....................................................................................... 45
5 Charge Algorithm ............................................................................................................... 47
5.1 Introduction.................................................................................................................. 47
5.2 Fast and Pre-Charging .................................................................................................... 47
5.3 Valid Charge Termination ................................................................................................. 48
5.4 Charge and Discharge Alarms ........................................................................................... 48
5.5 Charge Disable ............................................................................................................. 51
5.6 Charge Inhibit............................................................................................................... 51
5.7 Charge Suspend ........................................................................................................... 52
6 System Present.................................................................................................................. 53
6.1 Introduction.................................................................................................................. 53
6.2 System Present Detection and Action................................................................................... 53
7 Cell Balancing.................................................................................................................... 54
7.1 Introduction.................................................................................................................. 54
7.1.1 Cell Balancing Configuration..................................................................................... 55
8 Power Modes..................................................................................................................... 56
8.1 Introduction.................................................................................................................. 56
8.2 NORMAL Mode............................................................................................................. 56
8.3 SLEEP Mode................................................................................................................ 56
8.3.1 Device Sleep....................................................................................................... 56
8.3.2 ManufacturerAccess() MAC Sleep.............................................................................. 57
8.3.3 IN SYSTEM SLEEP Mode ....................................................................................... 57
8.4 SHUTDOWN Mode ........................................................................................................ 57
8.4.1 Voltage Based Shutdown ........................................................................................ 57
8.4.2 Time Based Shutdown............................................................................................ 58
8.4.3 ManufacturerAccess() MAC Shutdown......................................................................... 58
8.5 Power Mode Indication (PWRM) ......................................................................................... 58
9 CEDV Gas Gauging ............................................................................................................ 59
9.1 Introduction.................................................................................................................. 59
9.1.1 Main Fuel Gauge Registers...................................................................................... 59
9.1.2 Fuel Gauge Operating Modes ................................................................................... 60

Texas Instruments bq78350-R1 Specifications

General

Brand	Texas Instruments
Model	bq78350-R1
Category	Controller
Language	English