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DRV8323R: The gate drivers work only when both CAL pin and ENABLE pin set to high

Part Number: DRV8323R
Other Parts Discussed in Thread: DRV8323

Dear TI support forum,

Thank you very much for giving me the possibility to post my question here.

I made a design with the DRV8323RH, using the hardware interface to configure all parameters. Basically the schematics are similar to the evaluation board BOOSTXL-DRV8323 with one exception: I fixed the signals MODE to low (GND). However, the high side gate driver signal behaves strange, become 23V accidentally, the power is 12V.

The low side gate driver waves are not complementary with high side ones. DVDD shows 3.3V, the charge pump works.

If I set the CAL pin and ENABLE pin to high (5V),The gate driver works well.
So the amplifiers dose not work.

My question: is it there any idea to make both the drivers and amplifiers work at the same time?

Thank you very much for your reply.

Guoqiang Yang