• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 64 subscribers
  • Views 246 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS6594EVM: Scalable PMICs GUI's Quick start not working with stacked EVMs on I2C mode

Rafael Gonzalez Zuniga
Prodigy 20 points
Part Number: TPS6594EVM

Tool/software:

Hi

I am trying to use quick-start to control the output of the buck converters in a TPS65941111EVM. 

Both stacked EVMs are in a 1+1+1+1 configuration.

I was able to connect the EVM through I2C to the GUI (I closed GPIO2,SDA2/SDO; GPIO1,SCL2/CS, selected closed the jumpers for master and slave on their respective EVMs, and provided 3.3V to VSYS through an external power supply; I also set J47 to VCCA), but the GUI displays the message "Duplicate device names (or) invalid name found !" whenever I scan for devices.

I have also tried to write the registers individually, but even if I set the BUCK EN bits, I get no output.

What can I do to access quick-start?

Thank you.

  • 0
    TI__Genius 13850 points

    Hi Rafael,

    Before stacking boards did you update NVMs of the PMICs to match 2xPMIC case? And similarly I2C address must be set to be different for both PMICs. 

    Did you check communication works before stacking boards individually for both EVMs? 

    Br, Jari