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DRV8873-Q1: Is there any concern to drive Brushless motor by using DRV8873-Q1?

Yuta Kurimoto
Genius 10620 points
Part Number: DRV8873-Q1
Other Parts Discussed in Thread: DRV8873

Hello Team,

I'm Yuta Kurimoto TIJ FAE.

I got a question from customer about DRV8873-Q1. They want to drive 3-phase brushless motor by using DRV8873-Q1.

Of course I know we have portfolio of dedicated brushless motor driver but DRV8873-Q1 will be passed customer's certification so customer want to use DRV8873.

Q1. Is there any concern to drive brushless motor by using DRV8873-Q1?

Customer especially worried about below sentence.

"TI does not recommend tying the OUT1 and OUT2 pins together and drive a load. The half bridges may be out of synchronization in this configuration and any mismatch in the input commands can momentarily result in shoot through condition. This mismatch can be mitigated by adding an inductor in-line with the outputs."

Block diagram image is like below. They will use 3 half bridge.

Thanks,

Yuta Kurimoto