TIDM-HV-1PH-DCAC: PCB Schematic doubts

archit khandelwal

In the baseboard schematics-

I.inv is the AC sensed current output. I'm unable to understand that in the controller card connector why so many pins are connected to I.inv in the schematic.

Regards,

Archit.

over 7 years ago

0 Manish Bhardwaj over 7 years ago

TI__Mastermind 43730 points

We connected at multiple spots to enable oversampling if we needed to, using multiple ADC on the chip. However we did not get around to creating software for it.

0 archit khandelwal over 7 years ago in reply to Manish Bhardwaj

Prodigy 190 points

Also in the IGBT driver schematics, why you have utilized only 1 Fault and RESET signals( High side Switch of the first leg)

Is there any specific reason for using the fault signal for Q1 switch only?

Regards,

Archit

0 Manish Bhardwaj over 7 years ago in reply to archit khandelwal

TI__Mastermind 43730 points

Archit,

It;s not that we are using from Q1, but rather we are or'ing all 4 reset and fault signals.

This design has a legacy from F28035 where we were limited with 3TZ inputs. On our new devices, any GPIO can be a trip zone and all of them can connect together through the XBAR and hence if you wanted you could bring each one to a separate GPIO to identify faults uniquely.

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TIDM-HV-1PH-DCAC: PCB Schematic doubts