Thread: Fried EQ6 board
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Old 23-04-2018, 09:49 AM
AndrewJ
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AndrewJ is offline
 
Join Date: Mar 2006
Location: Melbourne
Posts: 1,905
Gday Bojan
Using the EQ8 schematic as a guide, i can now see that this regulator is running as a stepup/boost and only provides the "power" inputs to the 4 motor driver chips.
I thought they just ran off the supply voltage, but not so.
It appears to have 2 modes, stepup to 16.2V or stepup to 45.2V.
As such, we have the nasty possibility that a low input voltage will still get stepped up to the required output voltage, but the input current will jump up to compensate. ie brownouts can be worse than suspected????

Andrew
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