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wincle
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Adventurer
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Registered: ‎01-24-2014

PMbus programming on zcu106

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Hi, 

I am working on a project using zcu106 evaluation board and need to tune the power of both PS and PL.

I came across a document called "ZCU106 Power Bus Reprogramming", which mentioned the PMBus on zcu106 can only be programmed (written) 4 times. It also pointed out explicitly that MAX20751 has write cycle limitation while the limitation for MAX15303 is not mentioned. As you can see from the screenshot from the document bellow.

wincle_2-1612621317235.png

wincle_1-1612621183837.png

My question are: 

1. Is the write limitation only applied for those power rails using MAX20751 ? 

2. Can I just change VOUT of those power rail using MAX15303 and MAX15301 without any PMBus write restriction, such as number of write times ? 

 

Many thanks.

 

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wincle
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Registered: ‎01-24-2014
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wincle
Adventurer
Adventurer
202 Views
Registered: ‎01-24-2014