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TPS65132S: TPS65132S Technical Query

Divya Shree
Prodigy 30 points
Part Number: TPS65132S
Hi Team,
We are planning to use TPS65132SYFFR (x2 ) LED DRIVER IC  for Right and Left Display in one of our design .
Please let us know whether the slave address is same for both the IC or is it different for each IC (I2C interface is used here )
 
Regards,

Divya

  • 0
    TI__Mastermind 18550 points

    Hello Divya,

    I2C address is fixed for all TPS65132SYFFER devices and is 0x3E. So both devices will have the same address.

    Kind Regards,

    Liaqat

  • 0 in reply to Liaqat Khan
    Prodigy 30 points

    Hi Liaqat ,

    Thanks for your response .

    Also please clarify below Queries : 

    • We need +6V and -6V power output for our display application .

    • Please let us know  whether TPS65132S default output is +5.4 V and -5.4V  until it is pre-programmed through I2C 

    • Also we will have to follow specific power sequencing between +6V and -6V to meet our display power -on  requirement .

    • Is it possible to get a pre programmed IC as per our requirement .   


      Regards,
      Divya  
  • 0 in reply to Divya Shree
    Prodigy 30 points

    In continuation to previous queries ..

    • Is it one time programmable or do we need to program it  every Power -ON cycle .

    Regards ,

    Divya 

  • 0 in reply to Divya Shree
    TI__Mastermind 18550 points

    Hi Divya,

    - TPS65132S's default output voltage is +/-5.4V

    - It is not possible get a a pre-programmed device for TPS65132S with an output voltage of +/-6V

    - You should only program it one time and burn the newly programmed settings into the EEPROM. At subsequent power ups, the device will come up at newly programmed output voltage settings.

    Kind Regards,

    Liaqat

  • 0 in reply to Liaqat Khan
    Prodigy 30 points

    Hi Liaqat ,

    Ok Noted ,Thank you .

    Below are few more queries which needs your support : 

    • We are doing one Time Kernel image flashing here we are setting voltage to 6V ,Pease confirm whether this one time programming will retain the Configured output for 'N' no of power Cycles .
    • what will be the IC Output voltage  until kernel boots ?
    • Is the voltage 5.4V initially and has the device boots up completely output gets configured to 6V  ?.
    • Also we have a power on /off Sequence to be followed for our application ,there should be a delay                                                                                     of 1ms between P6V and N6V can this be achieved ?
    • Please confirm if we can use "ti,enable-time = <1000>;" parameter to achieve the required sequencing .

      Regards ,
      Divya 
  • 0 in reply to Divya Shree
    TI__Mastermind 18550 points

    Hi Divya,

    • We are doing one Time Kernel image flashing here we are setting voltage to 6V ,Pease confirm whether this one time programming will retain the Configured output for 'N' no of power Cycles .
    • LK: as long as you burn the newly programmed voltage settings into EEPROM once, new voltage settings will be retained for all subsequent power cycles.
    • what will be the IC Output voltage  until kernel boots ?
    • LK: once the new voltage setting of 6V is burned into the EEPROM, IC output voltage will be 6V before, during and after kernal boot.
    • Is the voltage 5.4V initially and has the device boots up completely output gets configured to 6V  ?.
    • LK: Once 6V voltage setting is burned into EEPROM, for all subsequent power cycles, output voltage will always come up to 6V even initially before kernal boot process.
    • Also we have a power on /off Sequence to be followed for our application ,there should be a delay                                                                                     of 1ms between P6V and N6V can this be achieved ?
    • LK: yes, you can achieve 1ms delay by programming DLYP1 bits to 00b, DLYN1 bits to 01b and SEQU bits to 01b Please see descriptions of register 0x02 and 0x03 in the datasheet for further explanation. 
    • Please confirm if we can use "ti,enable-time = <1000>;" parameter to achieve the required sequencing .
    • LK: I am not sure what you mean by "tienable-time=<1000>" but the power up sequence can be implemented as I described in the point above. 

    I hope that this is clarifies all of your questions.

    Kind Regards,

    Liaqat

  • +1 in reply to Liaqat Khan
    Prodigy 30 points

    Hi Liaqat ,

    Thanks for your swift valuable responses .

    Regards ,

    Divya