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BQ20Z45
Related Posts

  • Forum Post: Questions on Using the Bq20z45 with Bq247xx for Battery Pack Design

    MikePienovi
    My customer is planning to use the BQ20z45 and a BQ24747 in a battery pack design and they had the following questions. Can someone help to provide answers? 1.) Can a host controller, through the SMbus, have the AFE disconnect the load from battery and on reconnecting return to normal operation?...
    on Oct 26, 2009

  • Forum Post: Re: 12 cell Li-Ion in a 3S-4P

    BatteryBorne
    Hello SB, your battery pack needs match perfectly up with our bq20z4x, bq20z6x, bq20z7x and bq20z9x familes. I would suggest looking at the bq20z45. it is our latest release, most accurate gas gauge and smallest footprint imedance track device. http://focus.ti.com/docs/prod/folders/print/bq20z45...
    on Dec 14, 2009

  • Forum Post: Re: fuel gauge for LiFePO4

    BatteryBorne
    You can use the bq3060, bq20z4x and bq20z6x devices with LiFePO4.
    on Apr 21, 2010

  • Forum Post: BQ27510 Production Code

    Nick Moore
    I have written the firmware to program the BQ27510 from the three page flow chart from Going to Production with the bq2750x. However, every time I read register 0x66 to see if the data=0x00 I get the data to equal 0x37. Does anyone have any idea why this might be happening? I'm thinking maybe...
    on Jun 22, 2010

  • Forum Post: How to know more lifetime information of bq20Z75?

    Suren zhou
    Hi All, In EVSW, we can read lifetime data of bq20Z45 (For example: Max/Min Temp, Max/Min Cell Voltage, Max/Min Pack Voltage, Max Chg current, Max Dsg current etc...) in Data Flash, but bq20Z75 only Lifetime Max/Min Temp can be read. Does the bq20Z75 record other lifetime data (Max/Min Temp...
    on Aug 26, 2010

  • Forum Post: DISCREPANCY IN FET FAIL CURRENT LEVEL

    LonSchneider
    The document " Configuring the bq20z40/bq20z45 Data Flash," accessed from the Data Flash shows the current level at which FET Fail is tested as 50 mA. The bq20z45 Tech Ref shows it to be 20 mA. Please tell me which is correct.
    on Sep 7, 2010

  • Forum Post: CHEM files

    Ran Aloni
    is there any way to read the content of a *.CHEM file? please assist, thanks
    on Feb 27, 2011

  • Forum Post: BQ20Z45 3.3V Regulator Operation

    Kevin McCalmon
    What is the status of the 3.3V reg through operation? Is the reg typically on, except maybe for sleep/hibernate, or is it cycled on and off based on the mode the part is in. Assuming it’s not in sleep mode, what’s the reg doing?
    on Mar 28, 2011

  • Forum Post: bq20z45R1 change from Default configuration

    TLHB
    Hi All, I am using the bq20z45R1 in a 2-cell application with LFP cells. When I power up the device, I am not able to change from the default 3-cell configuration in Operation CFG A to the 2-cell I need (Operation Cfg A = 0x0129) because of flags due to cell undervoltage and over temp on TS2. I only...
    on Apr 5, 2011

  • Forum Post: Qmax Update much higher than nominal cell capacity

    TLHB
    Hi All, I am working on a 12Ah LFP pack using the bq20z45-R1 and after performing learn cycles (as recommended by TI) and including rest periods of 2hrs after charge, 5hrs after discharge. Max error was reduced to 1% and Qmax was updated and update status = 0E. So far so good. however, having used...
    on Apr 14, 2011

  • Forum Post: bq20Z45-R1 EVM board layout

    Raymond Koosha72136
    Hi, I am looking for a clear board layout of the bq20z45-R1 EVM board. The Top and Bottom Assebly figures on page 6 and 7 are not that clear. The Bottom assembly is not legible. Any idea where to loacte a clear layout? Thank you, RK
    on Apr 21, 2011

  • Forum Post: Help with bqEasy chemistry test

    Nicholas Alunni
    Hello, I'm trying to determine my batteries chemistry to calibrate the bq20z65EVM but I'm running into quite a few problems. I was hoping someone here might be able to help me. I'll do my best to describe what I've done so far and the problems I'm facing. Process: I've...
    on Jun 7, 2011

  • Forum Post: BQ20Z45-R1 Learning Cycle

    Raymond Koosha72136
    Hello, TI has published an interesting app report, "Achieving The Successful Learning Cycle" by Charles Herder and Ming Yu. I have the following questions about that article. 1. What is the best procedure that TI recommend at the start of a "Learning Cycle"? For instance...
    on Jun 14, 2011

  • Forum Post: Current Calibration

    Raymond Koosha72136
    Hello, I have used "Calibrate" function of EV software to calibrate the current. After 2 calibration attempts, the SBS shows a "current" of -8mA while no laod is connected to the cells. This is obviously a 0.4% error. But, is it a matter of concern? I have never had that problem...
    on Jun 14, 2011

  • Forum Post: Re: Current Calibration

    Viktoriya Sherman
    Check that there is no current during the CC offset calibration. Also make sure that you do the board offset calibration before the current calibration. Let me know if that fixes the problem. Regards, Viktoriya
    on Jun 14, 2011

  • Forum Post: Stsrt up current

    Raymond Koosha72187
    Hello, I am using bq20z45 EVM board as a development platform for a 10A DC load drain. The board is recommended for 2A with a Max current of 7A. I have programmed the part for 6A and over-discharge-current is set at 7A. The board works fine at 5.95A inclusive but for any current between 5.95 and...
    on Jun 27, 2011

  • Forum Post: bq20z45-r1 System Present Input (/PRES)

    BicycleRepairMan
    on Jun 20, 2011

  • Forum Post: Why DFETF flag not set?

    Suren zhou
    Dear All, (Please visit the site to view this file) I did following experiment about bq20z45 DFETF function. 1. Assembled a pack with bq20z45EVM; 2. Set the FET Fail time is 1 second, AFE OC Dsg is 12 (14A), AFE OC Dsg time 0F; 3. Discharge current from 5.1A regulator to 14.1A, then AOCD...
    on Jul 13, 2011

  • Forum Post: BQ20z45-R1 MOSFET control

    BicycleRepairMan
    Hi I need to be able to control the charge and discharge MOSFETs when the fuel gauge has been sealed, is there a way of doing this? The ideal functionality is a SMBus software SYS_PRES function or allowing the FETControl command to be used when the battery is sealed. I have a BQ20z45-R1 EVM and a 4S...
    on Jul 5, 2011

  • Forum Post: bq20z45-R1

    Raymond Koosha72136
    on Jul 26, 2011

  • Forum Post: Re: write to bq20z70 df

    Jackie Hui
    The command CAN return up to 32 bytes of data. If the subclass has less than 32 bytes, the read command will only return the data length of that particular subclass.
    on Aug 15, 2011

  • Forum Post: Re: write to bq20z70 df

    Jackie Hui
    Part of the device address (bit 0) is a read/write bit. The device address is 0x16. Depends on if it is a read/write, the device address change between 0x16 and 0x17. Basically, you will send 0x17 as the device address after re-start in SMBus read write and read block protocols. See the attached SMBus...
    on Aug 22, 2011

  • Forum Post: BQ20z45-R1 Charger Present setting

    BicycleRepairMan
    Hi I have designed a 3S battery and I want to put it into Shutdown mode using ManufacturingAccess command 0x0010 when the battery is sealed and present in the host equipment. I have set Charger Present to 12700mV (this is above the normal charge voltage of 12600mV for this battery), are there any...
    on Aug 24, 2011

  • Forum Post: Re: Production difficulty bq20z45 with Advanced bqMTester and version 1.0.6 of PC software

    Jackie Hui
    The communication error is caused by v1.06 is not compatible with the the newer hardware (HPA495). The newer hardware is account for cell-based voltage calibration. It is not required to calibrate bq20z45. Please use HPA169 bqMTester board with the current released bqMTester software. To add...
    on Sep 19, 2011

  • Forum Post: Re: BQ3060 - CC gain and CC delta set to 0

    Jackie Hui
    All calibration data is stored in under the Calibration tab. Having 0 on the CC Gain and CC delta indicated the device sense no current (or a very small) during current calibration. Once you have 0 on these calibration value, your current measurement will mess up and you will end up with various current...
    on Sep 27, 2011
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