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TIDA-01540: About AMC1301 & AMC1311 schematics

CagdasHISAR
Prodigy 80 points
Part Number: TIDA-01540
Other Parts Discussed in Thread: AMC1311, AMC1301

Hello!

I am planning to create a pcb about sensing dc link voltages.

So i have produced a little investigation in your reference designs. Finally i found your TIDA-01540 project with reinforced isolated amplifier.

In your schematics, phase voltages are sensing done with AMC1301, dc link voltage and module temprature are sensing done with AMC1311 but the pins of AMC1311 are not true in schematics, that is the confusing thing.

Is your pcb working well with this situation?


My best regards. 
Cagdas HISAR

  • 0
    TI__Intellectual 2910 points

    Hello Cagdas,

                                Thank you for looking into our reference design. In TIDA-01540, AMC1301 is being used for phase current measurement and AMC1311 is used for dc voltage and temp sensing. You have observed correctly that pinout of AMC1311 shown in schematics does not match with datasheet. However the circuit works as expected because the VINN of AMC1301 is shutdown pin in AMC1311. By grounding this pin in AMC1311, the device is enabled and will provide the right data. You can also find TINA simulation files at http://www.ti.com/tool/tida-01541 for you to explore how the circuit works and also to modify based on your design requirements.

    regards

    Navaneeth

  • 0 in reply to Navaneeth Narayanasamy
    Prodigy 80 points
    Thank you so much for your attention. This answer is exactly the same that we are thinking.