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TMS320F28379D: Control of two launchpads

Part Number: TMS320F28379D

Tool/software:

Hi There,

I am using two launchpads, TMS320F28379D, in my control setup. Each one of them is connected to an inverter to drive a motor. When the PWM for the first launchpad is enabled, I got noises on the ADCs for the other one, as shown here. The two launchpads shared the same GND. Is there any way to reject the noises. For your information, when only one launchpad is running, there are no noises. Also, I tried to synchronise PWM, but the same issue appeared.