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AMC1100: AMC1100

Part Number: AMC1100
Other Parts Discussed in Thread: TIDA-00555, , TIDA-00834

Hi,

In the document TIDA-00555.

Pg No-5, kindly help me understand why D19 is connected to -5V and what will happen if connected to 0V.  it will help reduce power supply complications.

Similarly what is the Maximum voltage tolerance of  PIN 2  and PIN 3.

I have made the following circuit 

Application- Isolated PMSM motor phase voltage measurement (F28069M)

The motor is subjected to 72V nominal.

The voltage filter pole frequency is about 200 Hz. (Kindly recheck this) [ BOOSTXL-DRV8301 Hardware User's Guide   (SLVU974–October 2013)  page 6 ]

I am worried about the transients (positive as well as negative) wont damage the AMC1100

The motor inductance is around 33uH axial flux pmsm.

Previously i had a worst experience with ACPLC87 finally i gave up with that part and changed my design i just need to be super confident before making the pcb. 

My original post (cant edit it): e2e.ti.com/.../630156

  • Vinayak, thank you for your interest in Texas Instruments TI Designs. Your query has been received and the design owners on our Grid Infrastructure systems team have been notified. You will be receiving a response from the team with 1-2 business days.

    Best Regards,

    John Fullilove
    Texas Instruments
    TI Designs
  • Hello Vinayak

    Thank you for considering AMC1100 in your design.

    The -5V is for input protection. You could use 0V instead of -5V with a back to back diode as shown in TIDA-00834. If a single diode is used, the leakage current of the diode can affect measurement.

    You could also refer the below TI design

    http://www.ti.com/tool/TIDA-00366#1

    AMC1100 has been used by multiple customers for measurement applications and they perform very well. Refer to the absolute max rating for the limits.

    Can you provide more details on the project  and the application with company background.

    How is the isolated power generated. We have solutions for isolated power. Similarly on the output You may need to have a level shift of the input is AC input and TI provides references that can be used and this is shown in the above design.

    Thanks

    Sreenivasa