INA296A-Q1: Maximum current is 100A for 10 seconds

jugn jung

Prodigy 30 points

Part Number: INA296A-Q1
Other Parts Discussed in Thread: INA229

Tool/software:

I would like to request a circuit design review.

After reading the current value through INA296A2QDDFRQ1 and comparing it through TLV9024QDYYRQ1.

The output value is controlled through SN74AHC1G08QDBVRQ1.

Discharge up to 100A for 10 seconds

Therefore, in this case, the output value of TLV9024QDYYRQ1 is 4.5V.

In this case, you need to compare the voltage with PIN 11 of TLV9024QDYYRQ1.

Maintain 100A for 10 seconds and at 10 seconds, 13PIN of TLV9024QDYYRQ1 should output 0V.

Therefore, the 10PIN of TLV9024QDYYRQ1 must be maintained for 10 seconds. Please provide guidance on this part.

In addition to the information mentioned above, please review the remaining circuit diagram.

(VCC: 5V / VCC load up to 400mA)
The shunt resistance value is 1m ohm. /

Voltage is up to 56Vti_FINAL.pdf

2 months ago

0 Javier Contreras4 2 months ago

TI__Mastermind 29490 points

Hello Jugn,

The device I can help with the INA296 schematic looks fine. For the comparator and the delay you could just add an RC filter like the post:

https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1018712/lm393-comparator-rc-delay-circuit

Another option is to use the INA229 and keep track of charge in the INA229. You could set alert function at 100A and then reset charge register. You would need to do some conversion and would need to keep monitoring the charge register and wait for the 100A at 10s.

Regards,

Javier

0 jugn jung 2 months ago in reply to Javier Contreras4

Prodigy 30 points

At pin 10 of TLV9024QDYYRQ1

200K and 10uF were applied.


In this case, it is 10 seconds for 5 tau.

In other words, when it reaches 100A, it becomes 4.5V.

200K and 10uF were applied with a 10 second delay

0 Javier Contreras4 2 months ago in reply to jugn jung

TI__Mastermind 29490 points

Hello Jugn,

That looks correct. Remember this time will change depending on your starting point.

Regards,

Javier

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INA296A-Q1: Maximum current is 100A for 10 seconds