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OMAP4430 & ICS battery and charger driver

Connie Kuang
Intellectual 370 points
Other Parts Discussed in Thread: TWL6032

Hi sir,

Is there any documents describing charging  algorithm.(USB charging and AC charging)

Q1: Could pmic(twl6032) measure discharging current ?

Q2: Could Blaze implement power-off charging ?

Q3: Could pmic(twl6032) set battery voltage threshold ? (battery low, transfer charging status from CC to CV, battery full)

Q4: Charging state machine.

I want to get a document which used to describe charging process in detail

Thanks.

  • 0
    TI__Expert 5515 points

    Hi Connie,

    I haven't see any document describing charging, maybe it depends on the battery characteristics.

    A1: There is noting build in as far as I know, but you can use one of the ADC to measure that

    A2: Yes, it is done with the TWLs

    A3: Yes, there is a pin where you set the input voltage lower limit, and some others thresholds, even for protections

    A4: I am not sure what that means, but it detects if you are charging from a regulator or usb, so you can program to limit the charging current

    Hope it helps

  • 0
    TI__Prodigy 450 points

    Hello Connie,

    The complete charging process, state diagrams and methods using the TWL6032 is outlined in the TWL6032 Data Manual.  In order to get access to the data manual and other OMAP related documentation for use in developing your application, you will have to contact your local TI Sales Representative or TI Sales Office.

    You can always search on http://www.ti.com for available product information.  In this case, there is basic information available for the TWL6032.

              http://www.ti.com/product/twl6032

    There is also a public site for the OMAP system documentation

              http://www.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?templateId=6123&navigationId=12037

    Thank you,

    ML

  • 0 in reply to Michael Long
    Intellectual 370 points

    Hi, ICe and Micheal

    Thank you for your help!

    Connie Kuang