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Documentation vs. Practical Doubts #1

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Alvazz opened this issue Apr 21, 2022 · 7 comments
Open

Documentation vs. Practical Doubts #1

Alvazz opened this issue Apr 21, 2022 · 7 comments

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@Alvazz
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Alvazz commented Apr 21, 2022

Hi, Very nice work, thank you for your hard work.
But after I saw this, I got a little confused, it says LM5107, but the actual schematic is 2ED2304S06F, am I mistaken?

Version 7
---------
|--- Add Schottky between phase and gnd at HS pin of LM5107
|--- Add 5R6 in phase line to HS pin of LM5107
|--- Change high side bypass cap to 10u/25V
|--- Add 14V TVS diode parallel to high side bypass cap
|--- Add one 12V TVS diode to 12V near driver
|--- move gate tracks and back from side by side to on top of each other
@CTSchorsch
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Oh, dont Update the documentation. Schematic is correct. The ED is a really nice driver

@Alvazz
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Alvazz commented May 9, 2022

Thanks!

@Alvazz
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Alvazz commented May 9, 2022

One more new doubt, what is the use of SN74LVC1G66DBVR device in this schematic? Thank you for your guidance!
gesc

@CTSchorsch
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U9 is a analog switch. the vesc-firmware supports to switch some additional filtering for current measurement and phase voltage measurement. in this picture the additional cap C41 is connected to the filter R33/C47

@Alvazz
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Alvazz commented May 9, 2022

Thanks! What are the benefits of doing this?

@CTSchorsch
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on high motor current there is more ripple on the signals and you can add more filtering. But there are many vesc-versions without this additional filter option.
i'm thinking about too remove it too on a next version

@Alvazz
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Alvazz commented May 9, 2022

Thank you for your guidance, mainly to play a filtering role

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