Part Number:DRV8305
I have a custom board with C2000 delfino MCU & DRV8305 for driving BLDC motors. The current sensor output of DRV8305 is fed to ADC of Delfino MCU. When I'm reading the phase currents, The bias of the phase currents is varying sinusoidally. Upon increasing the PWM frequency the bias shifts dissappearsand the current waveform is distorted.
The schematic is almost same as DRV8305 boosterpack with sense resistor modification. Any help in this regard is appreciated
Attached data was captured from ADC of C2000.
