Texas Instruments bq27220 Fuel Gauge Manuals

Manuals and User Guides for Texas Instruments bq27220 Fuel Gauge. We have 2 Texas Instruments bq27220 Fuel Gauge manuals available for free PDF download: Technical Reference Manual, User Manual

Texas Instruments bq27220 Technical Reference Manual (91 pages)

Brand: Texas Instruments | Category: Computer Hardware | Size: 2 MB

Table of Contents
3
Read this First
7
About this Manual
7
Formatting Conventions Used in this Document
7
Related Documentation from Texas Instruments
7
Trademarks
7
General Description
9
Gas Gauging
9
CEDV Gas Gauging Operational Overview
10
Main Fuel Gauge Registers
10
Capacity Learning (FCC Update) and Qualified Discharge
11
End-Of-Discharge Thresholds and Capacity Correction
12
EDV Discharge Rate and Temperature Compensation
12
EDV Age Factor
13
Self-Discharge
13
Battery Electronic Load Compensation
14
CEDV Configuration
14
Initial Battery Capacity at Device Reset
14
Fuel Gauge Operating Modes
15
Qmax
15
CEDV Smoothing
15
Standard Data Commands
17
Standard Commands
17
Control()/Control_Status(): 0X00 and 0X01
18
CONTROL_STATUS: 0X0000
19
DEVICE_NUMBER: 0X0001
19
FW_VERSION: 0X0002
19
HW_VERSION: 0X0003
20
BOARD_OFFSET: 0X0009
20
CC_OFFSET: 0X000A
20
CC_OFFSET_SAVE: 0X000B
20
OCV_CMD: 0X000C
20
BAT_INSERT: 0X000D
20
BAT_REMOVE: 0X000E
20
SET_SNOOZE: 0X0013
20
CLEAR_SNOOZE: 0X0014
20
SET_PROFILE_1/2/3/4/5/6: 0X0015-0X001A
20
CAL_TOGGLE: 0X002D
21
SEALED: 0X0030
21
RESET: 0X0041
21
OPERATION_STATUS: 0X0054
21
Gaugingstatus: 0X0056
21
EXIT_ CAL: 0X0080
21
ENTER_CAL: 0X0081
21
ENTER_CFG_UPDATE: 0X0090
22
EXIT_CFG_UPDATE_REINIT: 0X0091
22
EXIT_CFG_UPDATE: 0X0092
22
ENTER_ROM: 0X0F00
22
Atrate(): 0X02 and 0X03
22
Atratetimetoempty(): 0X04 and 0X05
22
Temperature(): 0X06 and 0X07
22
Voltage(): 0X08 and 0X09
22
Batterystatus(): 0X0A and 0X0B
23
Current(): 0X0C and 0X0D
23
Remainingcapacity(): 0X10 and 0X11
23
Fullchargecapacity(): 0X12 and 0X13
23
Timetoempty(): 0X16 and 0X17
23
Timetofull(): 0X18 and 0X19
23
Standbycurrent(): 0X1A and 0X1B
24
Standbytimetoempty(): 0X1C and 0X1D
24
Maxloadcurrent(): 0X1E and 0X1F
24
Maxloadtimetoempty(): 0X20 and 0X21
24
Rawcoulombcount(): 0X22 and 0X23
24
Averagepower(): 0X24 and 0X25
24
Internaltemperature(): 0X28 and 0X29
24
Cyclecount(): 0X2A and 0X2B
24
Stateofcharge(): 0X2C and 0X2D
25
Stateofhealth(): 0X2E and 0X2F
25
Chargingvoltage(): 0X30 and 0X31
25
Chargingcurrent(): 0X32 and 0X33
25
Btpdischargeset(): 0X34 and 0X35
25
Btpchargeset(): 0X36 and 0X37
25
Operationstatus(): 0X3A and 0X3B
25
Designcapacity(): 0X3C and 0X3D
26
Macdata(): 0X40 through 0X5F
26
Macdatasum(): 0X60
26
Macdatalen(): 0X61
26
Analogcount(): 0X79
26
Rawcurrent(): 0X7A and 0X7B
26
Rawvoltage(): 0X7C and 0X7D
26
Data Memory Interface
27
Accessing the Data Memory
27
Device Access Modes
27
Sealing and Unsealing Data Memory Access
27
Data Memory Summary
28
Functional Description
45
Device Configuration
45
CEDV Smoothing Config Register
45
Operation Configuration a (Operation Config A) Register
45
Operation Configuration B (Operation Config B) Register
46
External Pin Functions
46
Pin Function Code (PFC) Descriptions
46
Battery Presence Detection Using the BIN/TOUT Pin
47
SOC_INT Pin
47
Behavior
47
Power Path Control with the BAT_GD Pin
48
Battery Trip Point (BTP) Interrupts
48
Wake-Up Comparator
49
Autocalibration
49
Temperature Measurement
49
Overtemperature Indication
50
Charging and Charge Termination Indication
50
Detecting Charge Termination
50
Charge Inhibit
50
Power Modes
50
NORMAL Mode
51
SLEEP Mode
51
CONFIG UPDATE Mode
52
BAT INSERT CHECK Mode
52
Application-Specific Information
52
Battery Profile Storage and Selection
52
First OCV Measurement
53
Additional Data Memory Parameter Descriptions
53
OT Charge
61
OT Chg Recovery
61
OT Discharge
61
OT Dsg Recovery
61
Initial Standby Current
61
Default Temperature
62
Device Name
62
System down Set Voltage
62
System down Set Voltage Time
62
System down Clear Voltage
62
Full Reset Counter
62
Reset Counter Watchdog
62
Communications
63
I 2 C Interface
63
I 2 C Time out
63
I 2 C Command Waiting Time
63
I 2 C Clock Stretching
64
Application Examples
65
Data Memory Parameter Update Example
65
Open-Circuit Voltage Measurement Background
67
Background
67
OCV Qualification and Calculation
67
OCV Calculation Assumption
67
OCV Timing
67
OCV Timing and OCV_CMD Use Recommendations
69
ACTIVE Mode (Fuel Gauge Is Not in SLEEP Mode)
69
SLEEP Mode
69
Initial OCV - por
69
Updating BQ27220 Configuration Parameters
71
Gauge Mode Flashstream (Gm.fs) Files
71
Write Command
72
Read and Compare Command
72
Wait Command
73
CONFIG UPDATE Mode
73
OTP Mode Flashstream (Ot.fs) Files
73
Write Command
74
Read and Compare Command
75
Wait Command
75
CONFIG UPDATE Mode
75
Programming Instructions
76
Using Gm.fs Files
76
Using Ot.fs Files
76
General Setup and Software Installation to Program OTP
77
Launch Bqstudio Software
77
Load .GG File
79
Confirm or Update Data Memory Parameters
80
Save .OTFS File
82
Launch Smartflash Software
83
Open Ot.fs File
84
Program OTP
85
Confirm Success
86
A Battery Gauge Glossary
87
Glossary
88
B Revision History
89

Texas Instruments bq27220 User Manual (20 pages)

Brand: Texas Instruments | Category: Motherboard | Size: 0 MB

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