TPS6521905: Understanding GUI Behavior

Yuta Nishie

Part Number: TPS6521905
Other Parts Discussed in Thread: TPS65219EVM-SKT, , TPS65219

Hi,

I have checked the operation of TPS6521905 using TPS65219EVM-SKT. However, I tried to change the output voltage of LDO3 from 1.2 V to another value, but it did not change.

I don't know the cause. I would appreciate it if you could give me some advice.

Please refer to the attached document for connection methods and register settings.

TPS65219.pdf

regs.csv

Best Regards,

Nishie

9 months ago

+1 Brenda Diaz 9 months ago

TI__Genius 17835 points

Hi Nishie,

Thank You for using E2E. LDO3 and LDO4 do not support dynamic voltage scaling (DVS). To change the voltage on these two rails user must disable them first using the LDOx_EN field, change the output voltage and enable them again. Please try this and let us know if it works.

Thanks,

Brenda

0 Yuta Nishie 9 months ago in reply to Brenda Diaz

Genius 3200 points

Hi Brenda-san,

Thank you for your reply.

I was able to change the output voltage of LDO3 and LDO4.

Best Regards,

Nishie

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TPS6521905: Understanding GUI Behavior