hi team,,
Further to which, i am able to complete my functionality of device and in per-compliance testing stage. i am facing issue in Radiated emission test getting emission noise from my motor driver section. getting 45dbu/m in the range of 40- 70Mhz range. I suspected my PCB issue.
i am helpless i tried to understand more better by interfacing with TI8307 EVM board and tested in chamber , emission level is same as previous. i wonder whether its PCB issue or Its general that DRV8307 will emits that mush noise. (load of 1.5A) my doubt is DRV8307 internal clock for gate drives emitting the noise.. please help me out.
below are the graphs for your reference.
Range is 30M-1GHz
Peak on V :
Peak on H :
Thank you in advance
regards,
Adarsh