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TPS53676: TPS53676

Timothy Tran2
Intellectual 420 points
Part Number: TPS53676
Other Parts Discussed in Thread: TPS536C9T

Tool/software:

Hi,

How do I set the output voltage pin-strap to be 0.99V for example? 

Looks like it's in datasheets table 7-3 on page 36, but not sure or how to decode it...

Pls help.

Thanks,

Tim

  • 0
    TI__Expert 4385 points

    Hi Tim,

    Table 7-3 is broken into columns for each value of RLB. Each column has two sub-columns for VBOOTA and RHB. 

    To determine the resistor values for a VBOOTA of 0.99V you should find where in the table corresponds to 0.99V then check what RLB column it is in to get the RLB value. The RHB value will be adjacent to the VBOOTA value, in the same RLB column. 

    So for 0.99V, RLB = 49.9 kOhm and RHB = 124 kOhm.

    Regards,

    Troy

  • 0 in reply to Troy Johnson
    Intellectual 420 points

    Troy,

    Thanks for quick response and it resolved my question.

    Another question - This controller does not have feature/capability for paralleling multiple units to share load, am I correct?

    Thanks,

    Tim

  • +1 in reply to Timothy Tran2
    TI__Expert 4385 points

    Hi Tim,

    By paralleling you are referring to paralleling multiple power stages off one PWM correct? This controller does not have any features for such a setup, so while it could drive multiple power stages from one PWM, the output current used for reporting and fault thresholds would not be correct.

    If you need to have more power stages for your application than TPS53676 has PWM channels, you can consider a controller with more PWM channels like TPS536C9T.

    Regards,

    Troy