Battery Management

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Battery Management

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  • Forum Post: Bq24650

    Cebrail Haluk Gorgulu
    Hello dear desingers. i wonder that does anybody use Typical System Schematic in the datasheet of bq24650. I'm planing to create a circuit which contain this circuit too . I can hear that ti already made it. But i want to hear from customers. Have a good day.
    on Feb 10, 2011

  • Forum Post: BQ24104 Stuck in Temp Fault Mode

    Jason Struble
    I currently have a design using the BQ24104 IC. The problem is that if the battery back goes to an over temp during the charge (or pre-charge phase) it indicates by flashing the STAT1. But if the user removes the battery from the charger (as most would because it has faulted out), the charger continues...
    on Apr 25, 2011

  • Forum Post: bq24092

    Matthew Chiu
    During battery charging, the bq24092, how maximum internal impedance of battery can be accepted?
    on Apr 18, 2011

  • Forum Post: BQ24032A - Evaluation Board Schematic Question

    Hilary Richard
    I would like to understand why C7, a 0.22uF capacitor, is located on the schematic of the eval board for charging currents below 0.3A, but no reference of this is made anywhere else in the documentation. What is the purpose of this capacitor across Vbat and Rset? Thanks for your help.
    on Mar 29, 2011

  • Forum Post: Re: SLA Charger

    Tariq Ahmad
    Charles, thanks for your reply. Here's my problem: Raymond Mack in Marty Brown's book, "Power Sources & Supplies, World Class Designs, describes a charger ckt with the UC3906 charging 3 12V lead acid batteries in series. He is using a PNP Darlington pair in the charge path, with the...
    on Apr 28, 2011

  • Forum Post: Re: MPPT-Based Lead Acid Charger Using bq2031

    Arjun Pal67311
    hello chris, thanks for your reply. i have some doubt regarding the design. 1- The level translator circuit used between mod output and PFET base .How to design it .there is no description given in datasheets so can you help me to understand it. 2- I am using a solar panel for charging the...
    on May 9, 2011

  • Forum Post: Re: BQ24038EVM Q2 OFF

    Oscar Gomez Fuente
    Hi Charles, Maybe , I have not explained well. W e start from the state in which the battery is fully charged, then off the power input and the battery begins to discharge and the system continues to function properly, because the Q2 is on... What voltage of battery makes Q2 go off ? Thank...
    on May 9, 2011

  • Forum Post: BQ24038EVM Q2 OFF

    Oscar Gomez Fuente
    Hi, I'm testing the BQ24038 EVM . I wonder what value of battery voltage causes Q2 goes off ... Can you set the cutoff voltage for Q2 goes off ? Thank you very much .
    on May 4, 2011

  • Forum Post: Re: BQ24010

    RANDY RADFORD
    The C8051 senses the charge input voltage, provided by an external 5v supply. I am using 2 - 100k ohm voltage divider, so that I sense 1/2 the voltage. The battery is a Li-Ion polymer battery so the voltage on the output of the charger circuit is a maximum of 4.2VDC and as low as 3.3VDC. ...
    on May 12, 2011

  • Forum Post: Parallel battery charging options

    Paul Koenig
    We are interested in using Li-Ion cell batteries in parallel instead of series to keep the voltages lower in the system. What TI devices are good options to handle this application? We have standard battery packs that consist of 2 cells in parallel, but extended battery packs have 6 or 8 cells in parallel...
    on May 27, 2011

  • Forum Post: Power Path Charger - Part Suggestion

    Borislau Jevic
    Hi, I wanted to suggest a new part for the power path family. My suggestion is the following: Multi-cell charger. Can charge one, two, three or four cells. Pin selectable for Li-Ion/ Li- Pol and LiFePO4 Has two separate input paths, one USB (or x2 for a total of 1 Ah) the other...
    on May 23, 2011

  • Forum Post: Battery Protection IC

    Teck Chien PEK
    Hi, I am working on Li-ion battery protection circuit module for 4S configuration. The nominal charging voltage specified by the cell is 4.35V and cell supplier recommend overcharge detection at 4.43V and overdischarge at 2.30V. Is there any IC that anyone would recommend? Thank you.
    on Jul 8, 2011

  • Forum Post: BQ2403x family - When is LDO output active & additional CE questions

    Bob Miller76124
    The spec on page 24 states: Note that this LDO is only enabled when either AC or USB inputs are present. If the CE pin is low (chip disabled) and AC or USB is present, the LDO is powered by the battery. This is to ensure low input current when the chip is disabled. To confirm then, there will be...
    on Jun 7, 2011

  • Forum Post: bq24620 charger for 5 cell LI-poly batteries

    swapnil katre
    i have used the application note of bq24620 and built the pcb for charger. Charger is for VIN=28V, BAT=5-cell Li-Phosphate, Icharge=4A, Ipre-charge=0.125A, Iterm=0.3A. i have started testing the circuit and observed the STAT and PG led are Glowing, without connecting the Batteries to it. According...
    on Jul 16, 2011

  • Forum Post: bq24745 issue

    ou gareth
    (Please visit the site to view this file) I am running into a problem with the ACOK signal on BQ24745. I have attached my schematic in this email. You can see that my ACOK is connected to VREF through a 10K resister. When I connect the ACPWR (but not the BAT power), the ACOK signal does not go...
    on Nov 16, 2011

  • Forum Post: BQ2031 : Rv , Cv calculation ?

    Nikola Popovic
    Hi , I would like to use BQ2031 in charger application , battery is sealed lead acid, 24V , capacity 18Ah , Imax =2.2A, charge algorithm is two step voltage. As switching components , I will use IRFP250N MOS , and IR2110 MOS driver. All in All , it's not very complicated design , but...
    on Nov 23, 2011

  • Forum Post: BQ76PL536 communications

    Surya Tibrewala
    I am working with a battery balancing board with 4 stacked BQ76PL536's. The board is a custom design and was made by another engineer some years ago and then put in storage... I have very little idea about how he built the circuitry and have seen conflicting schematics. I have managed to locate...
    on Jan 13, 2012

  • Forum Post: BQ24103 My Battery is not charging

    Binoy Johnson94822
    Hai My BQ24103 battery charging circuit is not working properly. In this circuit battery is not charging please give a solution as immediate as possible Now I am attaching my circuit Regards Binoy Johnson (Please visit the site to view this file)
    on Jan 27, 2012

  • Forum Post: Current Sensing

    Alexandre Imbeault
    Hello, I'm currently working on a battery management system and I'm trying to find the best solution for high precision current sensing. This is used to calculate the State Of Charge (SOC) of battery. I'm looking for a shunt system. My critical specifications are: measuring range of +/- 300A...
    on Jan 24, 2012

  • Forum Post: BQ27505 fuel gauge to charger BQ24072 connection

    Anis
    hi, what is the best way to interconnect the fuel gauge BQ27505 and the charger BQ24072? I want to only use the battery pack thermistor for both. from what I found in the literature the best solution is to connect the thermistor to the fuel gauge and use the BAT_GD signal to control the charger...
    on Jan 28, 2012

  • Forum Post: BQ24160 issue

    veera venkateswara rao pusala
    Hi, I am using BQ24160 IC for my project, my problem is, the charger IC is generating interrupt ( reset ) to the processor when battery is not present, then again system is re-booting . please let me know what are the registers i need to do? my system is working when battery is present. ...
    on Feb 20, 2012

  • Forum Post: SLA charger and gas gauge IC combo

    TIM FOSTER
    I am working on a new design that will incorporate a battery backup, similar to a UPS. The battery that we will use will either be a 12V 100Ah or 12V 1Ah SLA (system is configurable at time of purchase to have one or the other). I have been looking through the forums and through the technical literature...
    on Feb 22, 2012

  • Forum Post: BQ24160 Heating Issue

    veera venkateswara rao pusala
    Hi, I am using BQ24160 IC for charging the 3.7V, 4000mA battery. here i am using 5V, 2A adopter for charging. During charging state, the battery consuming the 1.3A@4.2V and producing lot of heat (40 to 60 degree centigrade). we changed the registers current settings to 4.2V@2.5A . please let me...
    on Feb 27, 2012

  • Forum Post: Re: BQ24721-not charging battery

    vinay kuddur
    Hi Tahar, Please find the attached schematic doc which shows figures regarding the BAT, SYS, BATDRV, and ACDRV Regards vinay (Please visit the site to view this file)
    on Mar 1, 2012

  • Forum Post: Re: BQ24721-not charging battery

    vinay kuddur
    Hi Brian, Please find the attached schematic doc.pls check schematic once. (Please visit the site to view this file) Regards vinay
    on Mar 1, 2012
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