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Part Number: TPS549D22
I have a question about a PMBUS command, “VOUT_COMMAND”, of TPS549D22.
From the datasheet, VOUT_COMMAND is NVM. Is it really NVM?
I tested it with TPS549D22EVM-784 and Fusion Digital Power Designer.
I changed VOUT_COMMAND value on the Fusion Digital Power Designer and confirmed the Vout was changed as configured.
And push “Store Config to NVM”. It should be saved to NVM.
But after new powering cycle, the it was NOT saved.
Let me see if I can find out.
BSR-CCP LV/MV DC/DC Applications
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In reply to JohnTucker:
Thanks for your answer.I confirmed the behavior with EVM. The device starts up with NVM configurwation if the pinstrap is not only "open" and "0 ohm" but also "187K ohm" and "1.78K Ohm".
We should update Table 2 on P19 of the datasheet.
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