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Gate Driver ICs Forum Discussions

BengtJonsson
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I use 3 pieces of Eice driver 2ED020I12-F2 to drive a 3-phase inverter. This driver has a Fault output for each channel which is supposed to activate when a desaturation fault has occurred. If so it should also switch off the gate drive output. I have tried this in another inverter bridge and it works great.

But now on another board,  at least one of the 6 channels are outputting this fault flag. (Don't know which one or how many because the outputs are tied together.) But the bridge still runs the motor!! All the RDY outputs are high and toggling RST doesn't reset the Fault output.

There must be more reasons that can make this output activate than just desaturation.

What is it that the driver doesn't like?

What am I doing wrong?

 

Kind Regards /Bengt

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AZIZ_HASSAN
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Hi,

Can you please provide the schematics.

BR,

AZIZ

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BengtJonsson
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Hi, I can give you a part of it. to start with, please let me know if you need more /Bengt

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AZIZ_HASSAN
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Hi,

A part of schematic won't help. I request you to do a test by untying the output and check one by one. This will help to identify the problem.

BR,

AZIZ

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BengtJonsson
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Hi, of course. Here's the complete schematics.

I will do the test you propose and get back to you.

/Bengt

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AZIZ_HASSAN
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Hi,

Any update please.

BR,

AZIZ

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BengtJonsson
Level 1
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Yes I did the test yesterday. It is not the drivers. All the six fault outputs are high. Instead the signal was driven low by the input pin on another board which was supposed to read the fault outputs. it was a simple I/O setup issue. I should have thought of that earlier, I feel like fool right now 🙂 But anyways, thanks for helping me.

 

/Bengt

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