TMDSHVMTRINSPIN: Measuring phase current

Mofu Drives

Part Number: TMDSHVMTRINSPIN
Other Parts Discussed in Thread: OPA2350, TLV9062

Hi TI,

We are connecting a HV invertor stage to F28069M control card. 310 VDC, 1.5 A max

Can we measure the phase current like this. Kindly refer the image for circuit diagram.

Note: this is only a temporary arrangement for development to continue. With Chip shortage otherwise will delay our work further

Thanks

Raghunathan Kasi

over 4 years ago

0 Navaneeth Narayanasamy over 4 years ago

TI__Intellectual 2910 points

Raghunathan, If you intent to measure non isolated DC current, the scheme might work but will lead to poor measurement results. Would recommend to have gain in the path.

0 Mofu Drives over 4 years ago in reply to Navaneeth Narayanasamy

Intellectual 470 points

Many Thanks Navaneeth,

Could you please suggest a op-amp / comparator evm board so that we can go ahead and order from TI.

Thanks

Vivishekh

+1 Navaneeth Narayanasamy over 4 years ago in reply to Mofu Drives

TI__Intellectual 2910 points

You can look into OPA2350 or TLV9062.

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TMDSHVMTRINSPIN: Measuring phase current