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Author Topic: Test individual GPU phases ?  (Read 429 times)

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Offline didi79Topic starter

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Test individual GPU phases ?
« on: May 29, 2021, 09:44:17 am »
I'm rebuilding the GPU VRM on a GTX 970. It has 6 phases.
All phases are grouped on the output (usually at the inductor end facing the GPU). How do I know that each individual phase works ? Is removing the inductors (in fact isolating each phase from the group) the only way ?

Good diagram from the datasheet of the multi phase buck controller:
1223119-0
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Offline TheMG

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Re: Test individual GPU phases ?
« Reply #1 on: May 29, 2021, 03:54:59 pm »
Scope the input (switched) side of the inductors.
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Offline didi79Topic starter

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Re: Test individual GPU phases ?
« Reply #2 on: May 30, 2021, 07:58:59 am »
I hadn't thought of that. Thank you.
I really need an oscillocope !!
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