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TMS320F28035: HVMotorCtrl+PF ground problems

Essam HUSSAIN
Prodigy 100 points
Part Number: TMS320F28035


Hi

I am using HVMotorCtrl+PF for PM machine ,  PM machine control. I found the GND for the power and all the control , PWM are which causes lots of noise on the signals. Can I separate/isolate  the power and the control, PWM signals ground ?

Regards 

  • 0
    TI__Guru** 116350 points
    All grounds for digital, analog and power are connected together on HVKIT, it's a hot ground design. It's difficult to isolate these 3 ground for current and voltage sampling. You can split these grounds, but you need to connect these grounds into a point finally.