It can not to drive the motor to work,Please help to check it.Thanks a lot
First picture is the Schematic diagram,the second is PCB,the last picture is the waveforms of one phase.
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Wei,
Your schematic and layout appear to be fine.
Is channel 1 the PWM input signal? If so it needs to switch from 0 to 2.3+ V. It looks like it switching from ~3.3 to 4.8V. Also, the frequency of the PWM input needs to be between 15 and 50 kHz. I'm seeing 227 Hz.
Can you show scope with Phase U current, PWM input and FG output?
Thanks,
Brian