• State TI Thinks Resolved
  • Locked Locked
  • Replies 23 replies
  • Answers 8 answers
  • Subscribers 64 subscribers
  • Views 1321 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.

BQ30Z554-R1: bq30z55DBTRRR3 DFW issue

Tommy Tzeng
Genius 5790 points
Part Number: BQ30Z554-R1
Other Parts Discussed in Thread: BQ30Z55, BQ30Z55-R1

Hi Team,

i have a problem,cusotmer use BQ30Z55DBTR-R3 for battery pack solution has been M/P,but DFW issue occur random.

was started by DFW, we have reset IC to clear the PF flag but DFW still happen, how can i avoid this problem?  or have any idea and suggestion for us.

attachment is schematic.

JM2SP068PPV600A_schematic (003).pdf

  • 0
    TI__Mastermind 24870 points

    Hello Tommy,

    Sorry, can you clarify, what is DFW?

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    FYI.

  • 0 in reply to Tommy Tzeng
    Genius 5790 points

    Hi Kang Kang,

    have any idea or suggestion?

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello Tommy,

    Can you check the cycle count and attach the gg file?

    The DF flash write not successful may mean that the flash is worn out. If this is the case, we should see a high cycle count number in the gg file.

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    but will this this complete charge and discharge increase once? does this have anything to do with the number of write? because we have confirmed that the cycle count of the PACK returned by DFW is more 100 and more than 200,but there are also less than 100, so i don't see this kind of problem appear in the datasheet after using DF flash write many times, so could you help confirm this issue?or is there any way to avoid this kind of problem.

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello Tommy,

    This most likely means a dataflash is worn out. I am just wondering how many times this has been out in the field. I'll check the conditions for this bit setting.

  • 0 in reply to Kang Kang
    TI__Mastermind 24870 points

    Hello Tommy,


    During firmware operation, the gauge will try to update Ra tables or Qmax or lifetimes or some other impedance tracking parameter.

    The bit is set because when the gauge writes to flash, it will try to read back what it wrote. In this case, if the read back is different, the DFW bit is set.

    The most likely reason would be dataflash is worn out.

    Can you provide more information on how many packs are experiencing this failure? It could be that some of these packs may have been subject to multiple host side writes and caused the flash to wear out and gauge to unable to write to flash.

    Who is the end customer?

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    Can you provide more information on how many packs are experiencing this failure? 

    ans:11/55000 failure rate 0.02%, end custimer is Pegatron.

    if have DFW problem issue, will it cause IC damage? ic function be normal?

    as attached is customer the gg file, please reference.

    Fullscreen JS4HS002P1542000101.txt Download 
    [Header]
bq EVSW Version = 0.9.92	
DeviceName = bq30z55R3 v0.36
Time = 2020/3/2 �W�� 11:36:25	


[State(Gas Gauging)]
Qmax Cell 0 = 3143
Qmax Cell 1 = 3125
Qmax Cell 2 = 3200
Qmax Cell 3 = 3200
Qmax Pack = 3125
Update Status = 0E
Cell 0 Chg Voltage at EoC = 4051
Cell 1 Chg Voltage at EoC = 4053
Cell 2 Chg Voltage at EoC = 0
Cell 3 Chg Voltage at EoC = 0
Current at EoC = 37
Avg I Last Run = -1341
Avg P Last Run = -955
Delta Voltage = 250
Max Avg I Last Run = -1912
Max Avg P Last Run = -1352
[IT Cfg(Gas Gauging)]
Load Select = 3
Load Mode = 0
Ra Filter = 80.0
Ra Max Delta = 15
Design Resistance = 110
Reference Grid = 4
Resistance Parameter Filter = 65142
Term Voltage = 6400
Term Voltage Delta = 300
User Rate-mA = 0
User Rate-cW = 0
Reserve Cap-mAh = 70
Reserve Cap-cWh = 44
Remcap Smoothing Filter = 250
Fast Scale Start SOC = 10
[Current Thresholds(Gas Gauging)]
Dsg Current Threshold = 50
Chg Current Threshold = 20
Quit Current = 10

[R_a0(Ra Table)]
Cell0 R_a flag = 0000
Cell0 R_a 0 = 79
Cell0 R_a 1 = 82
Cell0 R_a 2 = 98
Cell0 R_a 3 = 114
Cell0 R_a 4 = 104
Cell0 R_a 5 = 106
Cell0 R_a 6 = 119
Cell0 R_a 7 = 118
Cell0 R_a 8 = 121
Cell0 R_a 9 = 127
Cell0 R_a 10 = 129
Cell0 R_a 11 = 139
Cell0 R_a 12 = 183
Cell0 R_a 13 = 317
Cell0 R_a 14 = 1081
[R_a1(Ra Table)]
Cell1 R_a flag = 0000
Cell1 R_a 0 = 89
Cell1 R_a 1 = 93
Cell1 R_a 2 = 110
Cell1 R_a 3 = 122
Cell1 R_a 4 = 111
Cell1 R_a 5 = 118
Cell1 R_a 6 = 139
Cell1 R_a 7 = 139
Cell1 R_a 8 = 141
Cell1 R_a 9 = 145
Cell1 R_a 10 = 145
Cell1 R_a 11 = 150
Cell1 R_a 12 = 170
Cell1 R_a 13 = 275
Cell1 R_a 14 = 935
[R_a2(Ra Table)]
Cell2 R_a flag = FF55
Cell2 R_a 0 = 66
Cell2 R_a 1 = 69
Cell2 R_a 2 = 82
Cell2 R_a 3 = 104
Cell2 R_a 4 = 80
Cell2 R_a 5 = 73
Cell2 R_a 6 = 86
Cell2 R_a 7 = 75
Cell2 R_a 8 = 76
Cell2 R_a 9 = 76
Cell2 R_a 10 = 73
Cell2 R_a 11 = 83
Cell2 R_a 12 = 89
Cell2 R_a 13 = 132
Cell2 R_a 14 = 452
[R_a3(Ra Table)]
Cell3 R_a flag = FF55
Cell3 R_a 0 = 66
Cell3 R_a 1 = 69
Cell3 R_a 2 = 82
Cell3 R_a 3 = 104
Cell3 R_a 4 = 80
Cell3 R_a 5 = 73
Cell3 R_a 6 = 86
Cell3 R_a 7 = 75
Cell3 R_a 8 = 76
Cell3 R_a 9 = 76
Cell3 R_a 10 = 73
Cell3 R_a 11 = 83
Cell3 R_a 12 = 89
Cell3 R_a 13 = 132
Cell3 R_a 14 = 452
[R_a0x(Ra Table)]
xCell0 R_a flag = 0055
xCell0 R_a 0 = 79
xCell0 R_a 1 = 82
xCell0 R_a 2 = 98
xCell0 R_a 3 = 114
xCell0 R_a 4 = 104
xCell0 R_a 5 = 106
xCell0 R_a 6 = 119
xCell0 R_a 7 = 120
xCell0 R_a 8 = 123
xCell0 R_a 9 = 129
xCell0 R_a 10 = 131
xCell0 R_a 11 = 141
xCell0 R_a 12 = 186
xCell0 R_a 13 = 322
xCell0 R_a 14 = 1099
[R_a1x(Ra Table)]
xCell1 R_a flag = 0055
xCell1 R_a 0 = 89
xCell1 R_a 1 = 93
xCell1 R_a 2 = 110
xCell1 R_a 3 = 122
xCell1 R_a 4 = 111
xCell1 R_a 5 = 118
xCell1 R_a 6 = 139
xCell1 R_a 7 = 145
xCell1 R_a 8 = 147
xCell1 R_a 9 = 151
xCell1 R_a 10 = 151
xCell1 R_a 11 = 156
xCell1 R_a 12 = 177
xCell1 R_a 13 = 287
xCell1 R_a 14 = 975
[R_a2x(Ra Table)]
xCell2 R_a flag = FFFF
xCell2 R_a 0 = 66
xCell2 R_a 1 = 69
xCell2 R_a 2 = 82
xCell2 R_a 3 = 104
xCell2 R_a 4 = 80
xCell2 R_a 5 = 73
xCell2 R_a 6 = 86
xCell2 R_a 7 = 75
xCell2 R_a 8 = 76
xCell2 R_a 9 = 76
xCell2 R_a 10 = 73
xCell2 R_a 11 = 83
xCell2 R_a 12 = 89
xCell2 R_a 13 = 132
xCell2 R_a 14 = 452
[R_a3x(Ra Table)]
xCell3 R_a flag = FFFF
xCell3 R_a 0 = 66
xCell3 R_a 1 = 69
xCell3 R_a 2 = 82
xCell3 R_a 3 = 104
xCell3 R_a 4 = 80
xCell3 R_a 5 = 73
xCell3 R_a 6 = 86
xCell3 R_a 7 = 75
xCell3 R_a 8 = 76
xCell3 R_a 9 = 76
xCell3 R_a 10 = 73
xCell3 R_a 11 = 83
xCell3 R_a 12 = 89
xCell3 R_a 13 = 132
xCell3 R_a 14 = 452

[Manufacturer Data(System Data)]
ManufacturerInfo = 150422-A
[Integrity(System Data)]
Data Flash Checksum = 0000

[Data(SBS Configuration)]
Remaining AH Cap. Alarm = 300
Remaining WH Cap. Alarm = 198
Remaining Time Alarm = 10
Initial Battery Mode = 8081
Design Voltage = 7600
Specification Information = 0031
Manufacture Date = 20-Oct-2015
Serial Number = 0065
Cycle Count = 92
Cycle Count Percentage = 60
Max Error Limit = 100
Design Capacity mAh = 3200
Design Capacity cWh = 2432
Manufacturer Name = JMS
Device Name = RSE001
Device Chemistry = LION
[FD(SBS Configuration)]
Set Voltage Threshold = 3000
Clear Voltage Threshold = 3100
Set % RSOC Threshold = 0
Clear % RSOC Threshold = 5
[FC(SBS Configuration)]
Set Voltage Threshold = 4200
Clear Voltage Threshold = 4100
Set % RSOC Threshold = 100
Clear % RSOC Threshold = 95
[TDA(SBS Configuration)]
Set Voltage Threshold = 3200
Clear Voltage Threshold = 3300
Set % RSOC Threshold = 10
Clear % RSOC Treshold = 15
[TCA(SBS Configuration)]
Set Voltage Threshold = 4200
Clear Voltage Threshold = 4100
Set % RSOC Threshold = 100
Clear % RSOC Threshold = 95
[Max Error(SBS Configuration)]
Time Cycle Equivalent = 24
Cycle Delta = 0.05

[CUV(Protections)]
Threshold = 3000
Delay = 1
Recovery = 3200
[CUVC(Protections)]
Threshold = 2900
Delay = 2
Recovery = 3000
[COV(Protections)]
Threshold Low Temp = 4140
Threshold Standard Temp = 4140
Threshold High Temp = 4140
Threshold Rec Temp = 4140
Delay = 1
Recovery Low Temp = 3950
Recovery Standard Temp = 3950
Recovery High Temp = 3950
Recovery Rec Temp = 3950
[OCC1(Protections)]
Threshold = 2500
Delay = 6
[OCC2(Protections)]
Threshold = 3200
Delay = 2
[OCC(Protections)]
Recovery Threshold = -50
Recovery Delay = 8
[OCD1(Protections)]
Threshold = -4850
Delay = 6
[OCD2(Protections)]
Threshold = -5200
Delay = 2
[OCD(Protections)]
Recovery Threshold = 20
Recovery Delay = 8
[OLD(Protections)]
Threshold = 05
Delay = 0F
Latch Limit = 0
Counter Dec Delay = 10
Recovery = 8
Reset = 15
[SCC(Protections)]
Threshold = 82
Latch Limit = 0
Counter Dec Delay = 10
Recovery = 5
Reset = 15
[SCD1(Protections)]
Threshold = 82
[SCD2(Protections)]
Threshold = A4
[SCD(Protections)]
Latch Limit = 0
Counter Dec Delay = 10
Recovery = 8
Reset = 15
[OTC(Protections)]
Threshold = 55.0
Delay = 2
Recovery = 50.0
[OTD(Protections)]
Threshold = 80.0
Delay = 2
Recovery = 70.0
[OTF(Protections)]
Threshold = 80.0
Delay = 2
Recovery = 70.0
[HWD(Protections)]
Delay = 10
[PTO(Protections)]
Charge Threshold = 2000
Suspend Threshold = 1800
Delay = 1800
Reset = 2
[CTO(Protections)]
Charge Threshold = 2500
Suspend Threshold = 2000
Delay = 54000
Reset = 2
[OC(Protections)]
Threshold = 300
Recovery = 20
RSOC Recovery = 90
[CHGV(Protections)]
Threshold = 500
Delay = 30
Recovery = -500
[CHGC(Protections)]
Threshold = 500
Delay = 2
Recovery = 100

[CUV(Permanent Fail)]
Threshold = 2000
Delay = 2
[COV(Permanent Fail)]
Threshold = 4300
Delay = 2
[CUDEP(Permanent Fail)]
Threshold = 2000
Delay = 2
[OTCE(Permanent Fail)]
Threshold = 91.0
Delay = 2
[OTF(Permanent Fail)]
Threshold = 100.0
Delay = 2
[QIM(Permanent Fail)]
Delta Threshold = 2200
Delay = 2
[CB(Permanent Fail)]
Max Threshold = 240
Delta Threshold = 40
Delay = 2
[VIMR(Permanent Fail)]
Check Voltage = 3700
Check Current = 10
Delta Threshold = 300
Delta Delay = 2
Duration = 100
[VIMA(Permanent Fail)]
Check Voltage = 3700
Check Current = 50
Delta Threshold = 370
Delay = 2
[IMP(Permanent Fail)]
Delta Threshold = 300
Max Threshold = 400
Ra Update Counts = 2
[CD(Permanent Fail)]
Threshold = 0
Delay = 2
[CFET(Permanent Fail)]
OFF Threshold = 20
OFF Delay = 2
[DFET(Permanent Fail)]
OFF Threshold = -20
OFF Delay = 2
[TH(Permanent Fail)]
ADC Delay = 10
[FUSE(Permanent Fail)]
Threshold = 5
Delay = 2
[AFER(Permanent Fail)]
Threshold = 100
Delay Period = 2
Compare Period = 5
[AFEC(Permanent Fail)]
Threshold = 100
Delay Period = 5
[2LVL(Permanent Fail)]
Delay = 2
[OCECO(Permanent Fail)]
Threshold = 5000
Delay = 2

[Device Status Data(PF Status)]
Safety Alert 0-15 = 0001
Safety Status 0-15 = 0001
PF Alert 0-15 = 0000
PF Status 0-15 = 0000
Safety Alert 16-31 = 0000
Safety Status 16-31 = 0000
PF Alert 16-31 = 0000
PF Status 16-31 = 0400
Operation Status 0-15 = 0000
Operation Status 16-31 = 0000
Charging Status 0-15 = 0000
Charging Status 16-23 = 00
Gauging Status = 0000
[Device Voltage Data(PF Status)]
Cell Voltage 0 = 0
Cell Voltage 1 = 0
Cell Voltage 2 = 0
Cell Voltage 3 = 0
Battery Direct Voltage = 0
Pack Voltage = 0
[Device Current Data(PF Status)]
Current = 0
[Device Temperature Data(PF Status)]
Internal Temperature = -273.2
External 1 Temperature = -273.2
External 2 Temperature = -273.2
[Device Gauging Data(PF Status)]
Cell0 Dod0 = 0
Cell1 Dod0 = 0
Cell2 Dod0 = 0
Cell3 Dod0 = 0
Passed Charge = 0
[AFE Regs(PF Status)]
AFE Status = 00
AFE State Control = 00
AFE Control = 00
AFE Output Status = 00
AFE Function Control = 00
AFE Cell Select = 00
AFE OCDV = 00
AFE OCDT = 00
AFE SCC = 00
AFE SCD1 = 00
AFE SCD2 = 00
AFE REF TRIM = 00

[Safety Status(Black Box)]
1st Status Status 0-15 = 0000
1st Safety Status 16-31 = 0000
1st Time to Next Event = 0
2nd Safety Status 0-15 = 0000
2nd Safety Status 16-31 = 0000
2nd Time to Next Event = 0
3rd Safety Status 0-15 = 0000
3rd Safety Status 16-31 = 0000
3rd Time to Next Event = 0
[PF Status(Black Box)]
1st PF Status 0-15 = 0000
1st PF Status 16-31 = 0400
1st Time to Next Event = 0
2nd PF Status 0-15 = 0000
2nd PF Status 16-31 = 0000
2nd Time to Next Event = 0
3rd PF Status 0-15 = 0000
3rd PF Status 16-31 = 0000
3rd Time to Next Event = 0

[Voltage(Lifetimes)]
Max Cell Voltage 0 = 4060
Max Cell Voltage 1 = 4060
Max Cell Voltage 2 = 0
Max Cell Voltage 3 = 0
Min Cell Voltage 0 = 2720
Min Cell Voltage 1 = 2700
Min Cell Voltage 2 = 0
Min Cell Voltage 3 = 0
Max Delta Cell Voltage = 440
[Current(Lifetimes)]
Max Charge Current = 1400
Max Discharge Current = 1400
Max Avg Dsg Current = 800
Max Avg Dsg Power = 9
[Safety Events(Lifetimes)]
No Of Cov Events = 0
Last Cov Event = 0
No Of Cuv Events = 40
Last Cuv Event = 84
No Of Ocd1 Events = 0
Last Ocd1 Event = 0
No Of Ocd2 Events = 0
Last Ocd2 Event = 0
No Of Occ1 Events = 0
Last Occ1 Event = 0
No Of Occ2 Events = 0
Last Occ2 Event = 0
No Of Old Events = 0
Last Old Event = 0
No Of Scd Events = 0
Last Scd Event = 0
No Of Scc Events = 0
Last Scc Event = 0
No Of Otc Events = 0
Last Otc Event = 0
No Of Otd Events = 0
Last Otd Event = 0
No Of Otf Events = 0
Last Otf Event = 0
[Charging Events(Lifetimes)]
No Valid Charge Term = 2040
Last Valid Charge Term = 92
[Gauging Events(Lifetimes)]
No Of Qmax Updates = 0
Last Qmax Update = 68
No Of Ra Updates = 0
Last Ra Update = 0
No Of Ra Disable = 72
Last Ra Disable = 92
[Power Events(Lifetimes)]
No Of Shutdowns = 2
[Cell Balancing(Lifetimes)]
Cb Time Cell 0 = 86
Cb Time Cell 1 = 136
Cb Time Cell 2 = 0
Cb Time Cell 3 = 0
[Temperature(Lifetimes)]
Max Temp Cell = 46
Min Temp Cell = -1
Max Delta Cell Temp = 3
Max Temp Int Sensor = 45
Min Temp Int Sensor = 0
Max Temp Fet = 0
[Time(Lifetimes)]
Total Fw Runtime = 20900
Time Spent In UT = 0
Time Spent In LT = 1740
Time Spent In STL = 12166
Time Spent In RT = 0
Time Spent In STH = 6990
Time Spent In HT = 0
Time Spent In OT = 0

[Fuse(Settings)]
PF Fuse 0-15 = 0013
PF Fuse 16-31 = 0407
Min Blow Fuse Voltage = 5000
[Manufacturing(Settings)]
Manufacturing Status = 01F8
[Protection(Settings)]
Enabled Protections 0-15 = 3FFF
Enabled Protections 16-31 = 0000
[Permanent Failure(Settings)]
Enabled PF 0-15 = 1813
Enabled PF 16-31 = 040F
[Configuration(Settings)]
Protection Configuration = 00
Temperature Configuration = 1006
Charging Configuration = 09
System Configuration = 003D
Gauging Configuration = 06CE
Sbs Configuration = 20
Sbs Data Config. 0-15 = 0CCC
Sbs Data Config. 16-23 = CC
[AFE(Settings)]
AFE State Control = 00

[Power(Power)]
Valid Update Voltage = 4000
[Shutdown(Power)]
Shutdown Voltage = 2700
Shutdown Time = 10
PF Shutdown Voltage = 2000
PF Shutdown Time = 10
Charger Present Threshold = 3000
[Sleep(Power)]
Sleep Current = 10
Voltage Time = 5
Current Time = 20
Wake = 00
[Ship(Power)]
Delay = 5

[Temperature Ranges(Advanced Charge Algorithm)]
T1 Temp = -5
T2 Temp = 10
T5 Temp = 20
T6 Temp = 25
T3 Temp = 50
T4 Temp = 60
Hysteresis Temp = 5
[Low Temp Charging(Advanced Charge Algorithm)]
Voltage = 4100
Current Low = 1600
Current Med = 1600
Current High = 1600
[Standard Temp Charging(Advanced Charge Algorithm)]
Voltage = 4100
Current Low = 2500
Current Med = 2500
Current High = 2500
[High Temp Charging(Advanced Charge Algorithm)]
Voltage = 4100
Current Low = 1600
Current Med = 1600
Current High = 1600
[Rec Temp Charging(Advanced Charge Algorithm)]
Voltage = 4100
Current Low = 2500
Current Med = 2500
Current High = 2500
[Pre-Charging(Advanced Charge Algorithm)]
Current = 320
[Maintenance Charging(Advanced Charge Algorithm)]
Current = 160
[Voltage Range(Advanced Charge Algorithm)]
Charging Voltage Low = 2700
Charging Voltage Med = 3600
Charging Voltage High = 4000
Charging Voltage Hysteresis = 100
[Termination Config(Advanced Charge Algorithm)]
Charge Term Taper Current = 160
Charge Term Voltage = 150
[Cell Balancing Config(Advanced Charge Algorithm)]
Bal Time/mAh Cell 0 = 359
Bal Time/mAh Cell 1-3 = 502
Min Start Balance Delta = 3
Relax Balance Interval = 18000
Min Rsoc for Balancing = 80
[Charging Rate of Change(Advanced Charge Algorithm)]
Current Rate = 1
Voltage Rate = 1
[Charge Loss Compensation(Advanced Charge Algorithm)]
CCC Current Threshold = 3520
CCC Voltage Threshold = 4200

[Voltage(Calibration)]
Cell Scale 0 = 20571
Cell Scale 1 = 20609
Cell Scale 2 = 20609
Cell Scale 3 = 20609
Pack Gain = 53747
BAT Gain = 48893
[Current(Calibration)]
CC Gain = 0.941
Capacity Gain = 280585.812
[Current Offset(Calibration)]
CC Offset = -8066
Coulomb Counter Offset Samples = 64
Board Offset = 0
[Temperature(Calibration)]
Internal Temp Offset = 6.3
External1 Temp Offset = -.2
External2 Temp Offset = 0.4
[Internal Temp Model(Calibration)]
Int Coeff 1 = 0
Int Coeff 2 = 0
Int Coeff 3 = -11136
Int Coeff 4 = 5754
Int Minimum AD = 0
Int Maximum Temp = 5754
[Cell Temperature Model(Calibration)]
Coeff a1 = -12598
Coeff a2 = 20755
Coeff a3 = -19272
Coeff a4 = 28020
Coeff a5 = 789
Coeff b1 = -245
Coeff b2 = 470
Coeff b3 = -3352
Coeff b4 = 5022
Rc0 = 11703
Adc0 = 11703
Rpad = 0
Rint = 0
[Fet Temperature Model(Calibration)]
Coeff a1 = -12598
Coeff a2 = 20755
Coeff a3 = -19272
Coeff a4 = 28020
Coeff a5 = 789
Coeff b1 = -245
Coeff b2 = 470
Coeff b3 = -3352
Coeff b4 = 5022
Rc0 = 11703
Adc0 = 11703
Rpad = 0
Rint = 0
[Filter(Calibration)]
Cell Voltage 1 = 145
Cell Voltage 2 = 145
Cell Voltage 3 = 145
Cell Voltage 4 = 145
Pack Voltage Out = 10
Direct Battery Voltage = 10
Summed Battery Voltage = 145
Cell Temperature = 145
FET Temperature = 145
[Current Deadband(Calibration)]
Deadband = 3
Coulomb Counter Deadband = 34

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello Tommy,

    This does look like a potential flash corruption.

    Are you able to still communicate with the "DFW bit set packs"?

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    if DFW is turn off(n/a), what other offect will it have?

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello Tommy,

    I believe it just means you will not get a PF when the DF writes are worn out.

    I don't know if this is particularly recommended. The 1 is enabled by default.

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    So don't you recommend it?

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello Tommy,

    The default value is "1". I don't think you should set it to "0" without knowing your system well enough.

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    DFW caused by the internal Gauge IC and can't get PF,what is the relation with the system?may i know have any risk?

    I believe it just means you will not get a PF when the DF writes are worn out.==>because the customer has concern, is it related with the system?

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello Tommy,

    A potential cause is that if the dataflash is worn out and your system does not know about it, it could mean no alert will be triggered. You will have to assess system level behavior on your side.

    It could be Ra tables updating incorrectly and Qmax updating incorrectly.

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    thank for your great support.

    several issue as follows:

    are there different program version for BQ30Z55 series?is there ECN?

    how to berify that the flash can be write for more than 20k cycles, and how often will it be write?is there a file description for the number of flash memory write/ calculate?

    look forward to your reply.

  • 0 in reply to Tommy Tzeng
    Genius 5790 points

    Hi Kang Kang,

    any idea or information?

  • 0 in reply to Tommy Tzeng
    Intellectual 280 points

    why do you have

    [CUV(Protections)]
    Threshold = 3000
    Delay = 1
    Recovery = 3200

    and here

    [Power(Power)]
    Valid Update Voltage = 4000
    [Shutdown(Power)]
    Shutdown Voltage = 2700

    ????????




  • 0 in reply to Tommy Tzeng
    Intellectual 280 points

    Поэтому у вас есть

    [CUV (Защита)]
    Порог = 3000
    Задержка  = 1
    Восстановление = 3200

    и здесь

    [Power (Power)]
    Действительное напряжение обновления = 4000
    [Shutdown (Power)]
    Напряжение отключения = 2700

    ????????




  • 0 in reply to Pavel Rudkovsky
    Genius 5790 points

    Hi Sir,

    I can't see your narrative.because it is garbled.

    My question is as follows:

    are there different program version for BQ30Z55 series?is there ECN?

    how to berify that the flash can be write for more than 20k cycles, and how often will it be write?is there a file description for the number of flash memory write/ calculate?

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello,

    It is just the latest from ti.com.

  • 0 in reply to Kang Kang
    Genius 5790 points

    Hi Kang Kang,

    sorry,what is mean and I’m not following.
    could you help customer the following question?

    are there different program version for BQ30Z55 series?is there ECN?

    how to berify that the flash can be write for more than 20k cycles, and how often will it be write?is there a file description for the number of flash memory write/ calculate?

  • 0 in reply to Tommy Tzeng
    TI__Mastermind 24870 points

    Hello,

    I would go by the DS spec. There's no file for how often flash writes. We write flash periodically for Qmax and Ra updates throughout the life of the battery pack.

    I see one version of the bq30z55-R1 on ti.com