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BQ40Z50: BQ40Z50 Application problem

garin zhu
Intellectual 360 points
Part Number: BQ40Z50
Other Parts Discussed in Thread: BQSTUDIO,

I now set several parameters of the battery and the design capacity.

The total voltage of the interface is normal and the voltage of each battery is normal. The switch charge of MOS can also be controlled.           

Problem: current is not very accurate, more than 3A will protect.         

MOS closes the alarm bit like the following figure

I tried to set the parameters of the current in the register, which were not effective, and still showed protection when discharging 3A. Are there any related parameters to be set

How is callbration gas  available?

  • 0
    TI__Expert 6575 points
    The calibration can only correct by about 25%, so if the error in current measurement is more than that, it will not be able to calibrate in bqStudio.
    Most likely the issue is that the sense resistor that you are using is not 1mOhm, and since the default configuration of the calibration settings is for 1mOhms, you may have to manually change the "CC Gain" and "Capacity Gain" in the "Calibration" section of data memory to your sense resistor value and then calibrate again and then it should work in bqStudio.
    Regards,
    Swami
  • 0 in reply to Swaminathan Ramanathan75031
    Intellectual 360 points

    Now it is certain that the discharge ASCC alarm, and the actual current is not greater than the SCC TH (2:0) /Rs (the voltage of the actual resistance at both ends and not so large voltage 4.5Mv), so it is more strange

    .

  • 0 in reply to garin zhu
    TI__Expert 6575 points
    Please post a bqStudio log file during the test, as well as your gg file.
    Let me check why you are seeing this issue.
    Regards,
    Swami
  • 0 in reply to Swaminathan Ramanathan75031
    Intellectual 360 points

    1、Log file in the appendix；

    2、The difference between BQ40Z50R1 and BQ40Z50R2?

    Fullscreen bqSBB.log.txt Download 
    File created Mon Jul 02 09:42:16 2018

Function Open Container at time Mon Jul 02 09:42:16 2018
  String: ./config/4500_1_06-bq40z50R1.bqz
SetInfo called with Keyword: DeviceName   Value: BQ40Z50-R1
SetInfo called with Keyword: DeviceIdentifier   Value: BQ40Z50-R1 V1.06 BUILD 36
SetInfo called with Keyword: BaseHardware   Value: BQ9000
SetInfo called with Keyword: GGProtocol   Value: SMBUS
SetInfo called with Keyword: ROMProtocol   Value: SMBUS
SetInfo called with Keyword: SMB_NewMacCMD   Value: 0X44
SetInfo called with Keyword: MAC_GoToROM   Value: 0XF00
SetInfo called with Keyword: MAC_SealCmd   Value: 0X0040
SetInfo called with Keyword: MAC_ResetDevice   Value: 0X0041
SetInfo called with Keyword: MemoryAccessMethod   Value: BQ40Z5X
SetInfo called with Keyword: bcfgxBaseAddr   Value: 0X4000
SetInfo called with Keyword: ChemistryMethod   Value: BQ40Z5X
SetInfo called with Keyword: Use_Ra0_charge   Value: 1
SetInfo called with Keyword: CalEnableFlagCmdUsesMAC   Value: TRUE
SetInfo called with Keyword: CalEnableFlagCmd   Value: 0X0057
SetInfo called with Keyword: CalEnableFlagMask   Value: 0X8000
SetInfo called with Keyword: Cal_TS1   Value: TRUE
SetInfo called with Keyword: Cal_TS2   Value: TRUE
SetInfo called with Keyword: Cal_TS3   Value: TRUE
SetInfo called with Keyword: Cal_TS4   Value: TRUE
SetInfo called with Keyword: GGProtocol   Value: SMB
SetInfo called with Keyword: GGProtocol   Value: SMB
SetInfo called with Keyword: SMB_TargetAddr   Value: 23

SetInfo parameters called from function RefreshAllData at time Mon Jul 02 09:42:28 2018
DeviceName: bq40z50-R1
DeviceIdentifier: bq40z50-R1 v1.06 build 36
GGProtocol: 0
Enum: SMBus | I2C | HDQ | SDQ 
MemoryAccessMethod: 1
Enum:  BQ30Z5X, BQ40Z5X, I2CFWSDKMODE, I2CC816SDK, BQ275XX, HH8101, HH8035, HH8036, HH8034, HH8037
SMB_NewMACCMD: 0x44
SMB_TargetAddr: 0x17
I2C_TargetAddr: 0xaa
MacCmdInput: 0x00
MAC_GoToROM: 0x0f00
ROMProtocol: 0x00
ExecuteFWCmd: 0x08
CalibrationMethod: 0
ChemistryMethod: 0x00
bcfgxBaseAddr: 0x4000
SCB_NewMacBase: 0x3e
ROM_SMBus over I2C TgtAddress: 0x16
SCB_Currentaddr: 0x14
DF_Big_Endian: 0x00
SupportsSoftReset: 0x00
IFReadOnly: 0x00
DFReadOnly: 0x00
ConfigUpdate: 0x00
CalSingleCellCCABCAMask: 0x0c00
CalEnableRequired: 0x00
CalEnableFlagUsesMAC: 0x01
CalEnableFlagCmd: 0x0057
CalEnableFlagMask: 0x8000
CalEnableStatusDFFlag: 
CalActiveRequired: 0x00
CalActiveFlagCmdUsesMAC: 0x00
CalActiveFlagCmd: 0xff
CalActiveFlagMask: 0x1000
CalActiveStatusDFFlag: 
CalCCAndBoardOffsetMask: 0x00
RawAnalogDataAddress: 0x79
RawAnalogDataSize: 7
RawAnalogDataConvCntOffset: 0
RawAnalogDataCurrentOffset: 1
RawAnalogDataVoltageOffset: 3
RawAnalogDataTempOffset: 5
Calibration Pack Gain Scale: 65536
Calibration Battery Gain Scale: 65536
Calibration Current Capacity Gain Scale: -2147483648
SecureAreaUnlockAddr: 98
SecureAreaDataSize: 1
SecureAreaUnlockCmd: 148
SecureSubClasses: ��
StaticChemChecksumAddr: 0x0017
Supports Ra0_Charge: 1
MAC Seal State: cmd 54,byte offset 01,seal bit mask 06
MAC Seal Flag: 06
MAC UnSeal Flag: 04
MAC Full Access Flag: 02
Option: NOOPTION
SetInfo called with Keyword: SMB_TargetAddr   Value: 23
SetInfo called with Keyword: SMB_TargetAddr   Value: 23

SetInfo parameters called from function RefreshAllData at time Mon Jul 02 10:57:08 2018
DeviceName: bq40z50-R1
DeviceIdentifier: bq40z50-R1 v1.06 build 36
GGProtocol: 0
Enum: SMBus | I2C | HDQ | SDQ 
MemoryAccessMethod: 1
Enum:  BQ30Z5X, BQ40Z5X, I2CFWSDKMODE, I2CC816SDK, BQ275XX, HH8101, HH8035, HH8036, HH8034, HH8037
SMB_NewMACCMD: 0x44
SMB_TargetAddr: 0x17
I2C_TargetAddr: 0xaa
MacCmdInput: 0x00
MAC_GoToROM: 0x0f00
ROMProtocol: 0x00
ExecuteFWCmd: 0x08
CalibrationMethod: 0
ChemistryMethod: 0x00
bcfgxBaseAddr: 0x4000
SCB_NewMacBase: 0x3e
ROM_SMBus over I2C TgtAddress: 0x16
SCB_Currentaddr: 0x14
DF_Big_Endian: 0x00
SupportsSoftReset: 0x00
IFReadOnly: 0x00
DFReadOnly: 0x00
ConfigUpdate: 0x00
CalSingleCellCCABCAMask: 0x0c00
CalEnableRequired: 0x00
CalEnableFlagUsesMAC: 0x01
CalEnableFlagCmd: 0x0057
CalEnableFlagMask: 0x8000
CalEnableStatusDFFlag: 
CalActiveRequired: 0x00
CalActiveFlagCmdUsesMAC: 0x00
CalActiveFlagCmd: 0xff
CalActiveFlagMask: 0x1000
CalActiveStatusDFFlag: 
CalCCAndBoardOffsetMask: 0x00
RawAnalogDataAddress: 0x79
RawAnalogDataSize: 7
RawAnalogDataConvCntOffset: 0
RawAnalogDataCurrentOffset: 1
RawAnalogDataVoltageOffset: 3
RawAnalogDataTempOffset: 5
Calibration Pack Gain Scale: 65536
Calibration Battery Gain Scale: 65536
Calibration Current Capacity Gain Scale: -2147483648
SecureAreaUnlockAddr: 98
SecureAreaDataSize: 1
SecureAreaUnlockCmd: 148
SecureSubClasses: ��
StaticChemChecksumAddr: 0x0017
Supports Ra0_Charge: 1
MAC Seal State: cmd 54,byte offset 01,seal bit mask 06
MAC Seal Flag: 06
MAC UnSeal Flag: 04
MAC Full Access Flag: 02
Option: NOOPTION

SetInfo parameters called from function RefreshAllData at time Mon Jul 02 11:10:49 2018
DeviceName: bq40z50-R1
DeviceIdentifier: bq40z50-R1 v1.06 build 36
GGProtocol: 0
Enum: SMBus | I2C | HDQ | SDQ 
MemoryAccessMethod: 1
Enum:  BQ30Z5X, BQ40Z5X, I2CFWSDKMODE, I2CC816SDK, BQ275XX, HH8101, HH8035, HH8036, HH8034, HH8037
SMB_NewMACCMD: 0x44
SMB_TargetAddr: 0x17
I2C_TargetAddr: 0xaa
MacCmdInput: 0x00
MAC_GoToROM: 0x0f00
ROMProtocol: 0x00
ExecuteFWCmd: 0x08
CalibrationMethod: 0
ChemistryMethod: 0x00
bcfgxBaseAddr: 0x4000
SCB_NewMacBase: 0x3e
ROM_SMBus over I2C TgtAddress: 0x16
SCB_Currentaddr: 0x14
DF_Big_Endian: 0x00
SupportsSoftReset: 0x00
IFReadOnly: 0x00
DFReadOnly: 0x00
ConfigUpdate: 0x00
CalSingleCellCCABCAMask: 0x0c00
CalEnableRequired: 0x00
CalEnableFlagUsesMAC: 0x01
CalEnableFlagCmd: 0x0057
CalEnableFlagMask: 0x8000
CalEnableStatusDFFlag: 
CalActiveRequired: 0x00
CalActiveFlagCmdUsesMAC: 0x00
CalActiveFlagCmd: 0xff
CalActiveFlagMask: 0x1000
CalActiveStatusDFFlag: 
CalCCAndBoardOffsetMask: 0x00
RawAnalogDataAddress: 0x79
RawAnalogDataSize: 7
RawAnalogDataConvCntOffset: 0
RawAnalogDataCurrentOffset: 1
RawAnalogDataVoltageOffset: 3
RawAnalogDataTempOffset: 5
Calibration Pack Gain Scale: 65536
Calibration Battery Gain Scale: 65536
Calibration Current Capacity Gain Scale: -2147483648
SecureAreaUnlockAddr: 98
SecureAreaDataSize: 1
SecureAreaUnlockCmd: 148
SecureSubClasses: ��
StaticChemChecksumAddr: 0x0017
Supports Ra0_Charge: 1
MAC Seal State: cmd 54,byte offset 01,seal bit mask 06
MAC Seal Flag: 06
MAC UnSeal Flag: 04
MAC Full Access Flag: 02
Option: NOOPTION

Function Chemistry programming at time Mon Jul 02 11:58:42 2018
  String: Base Chem ID 0100 programmed. Device supports HF resistance but data is not present in database.SetInfo called with Keyword: SMB_TargetAddr   Value: 23

SetInfo parameters called from function RefreshAllData at time Mon Jul 02 15:12:10 2018
DeviceName: bq40z50-R1
DeviceIdentifier: bq40z50-R1 v1.06 build 36
GGProtocol: 0
Enum: SMBus | I2C | HDQ | SDQ 
MemoryAccessMethod: 1
Enum:  BQ30Z5X, BQ40Z5X, I2CFWSDKMODE, I2CC816SDK, BQ275XX, HH8101, HH8035, HH8036, HH8034, HH8037
SMB_NewMACCMD: 0x44
SMB_TargetAddr: 0x17
I2C_TargetAddr: 0xaa
MacCmdInput: 0x00
MAC_GoToROM: 0x0f00
ROMProtocol: 0x00
ExecuteFWCmd: 0x08
CalibrationMethod: 0
ChemistryMethod: 0x00
bcfgxBaseAddr: 0x4000
SCB_NewMacBase: 0x3e
ROM_SMBus over I2C TgtAddress: 0x16
SCB_Currentaddr: 0x14
DF_Big_Endian: 0x00
SupportsSoftReset: 0x00
IFReadOnly: 0x00
DFReadOnly: 0x00
ConfigUpdate: 0x00
CalSingleCellCCABCAMask: 0x0c00
CalEnableRequired: 0x00
CalEnableFlagUsesMAC: 0x01
CalEnableFlagCmd: 0x0057
CalEnableFlagMask: 0x8000
CalEnableStatusDFFlag: 
CalActiveRequired: 0x00
CalActiveFlagCmdUsesMAC: 0x00
CalActiveFlagCmd: 0xff
CalActiveFlagMask: 0x1000
CalActiveStatusDFFlag: 
CalCCAndBoardOffsetMask: 0x00
RawAnalogDataAddress: 0x79
RawAnalogDataSize: 7
RawAnalogDataConvCntOffset: 0
RawAnalogDataCurrentOffset: 1
RawAnalogDataVoltageOffset: 3
RawAnalogDataTempOffset: 5
Calibration Pack Gain Scale: 65536
Calibration Battery Gain Scale: 65536
Calibration Current Capacity Gain Scale: -2147483648
SecureAreaUnlockAddr: 98
SecureAreaDataSize: 1
SecureAreaUnlockCmd: 148
SecureSubClasses: ��
StaticChemChecksumAddr: 0x0017
Supports Ra0_Charge: 1
MAC Seal State: cmd 54,byte offset 01,seal bit mask 06
MAC Seal Flag: 06
MAC UnSeal Flag: 04
MAC Full Access Flag: 02
Option: NOOPTION

Function Chemistry programming at time Mon Jul 02 15:15:13 2018
  String: Base Chem ID 0100 programmed. Device supports HF resistance but data is not present in database.

  • 0 in reply to garin zhu
    TI__Expert 6575 points

    Hi Garin,

    Could you please post a log from bqStudio during the test:

    as well as your gg file:

    The R1 to R2 change spec is available at

    Regards,

    Swami

  • 0 in reply to Swaminathan Ramanathan75031
    Intellectual 360 points
    The problem has been solved. It's a hardware design problem
  • 0 in reply to garin zhu
    Intellectual 360 points

    The current problem is that the BQ40Z50-R2 switches and lights can only be controlled independently, and the switches we need to match the Led function as follows:           

    1. The soft start of the system can be realized by long switch.        

    2, during the charging process, LED can display electricity for a long time.           

    3, through the short press button, let LED display electricity;           

    4, the battery capacity is 10%, LED flicker          

    Now the function of buttons and LED can not be controlled each other.

  • 0 in reply to Swaminathan Ramanathan75031
    Intellectual 360 points
    The current problem is that the BQ40Z50-R2 switches and lights can only be controlled independently, and the switches we need to match the Led function as follows:
    1. The soft start of the system can be realized by long switch.
    2, during the charging process, LED can display electricity for a long time.
    3, through the short press button, let LED display electricity;
    4, the battery capacity is 10%, LED flicker
    Now the function of buttons and LED can not be controlled each other.
  • 0 in reply to garin zhu
    TI__Expert 6575 points
    Unfortunately the LED and Display button functionality of the bq40z50-R2 is not customizable.
    The different modes and settings for the LED that are available are described in Section 8. ("LED Display") of the TRM for reference.
    Regards,
    Swami