MCT8329A: Motor starting problem

Hi, recently I'm trying to drive the BLDC motor with MCT8329A.

I made a small development board myself and now I'm testing my board.

Since I don't use I2C communication with the IC, I'm driving the motor in default condition(analog driving mode).

So here's a problem with starting the motor.

The situation I'm in is like below in a row. I attached a video about the situation.

1. Successfully started the motor with 'Align'.

2. I applyed the analog signal after Vdc is stabilized.

3. The motor started running but It stopped after a few milliseconds(It even changes every time I tried. The longest drving time was around 1 second).

It seems like some kind of protection fault was activated since the nFault pin becomes low when the motor stopped.

Does anyone knows what's the problem in this situation?

Thank you.

e2e.ti.com/.../bldc_5F00_1.mp4