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Original question:

TMS320F28379S: C2000 Interface with BLDC motor with Hall Sensors

TMS320F28379S: Decoupling of VREF pins

Jagbir
Expert 1545 points

Part Number: TMS320F28379S

Hi,

What is the recommended method to decouple the Vref pins? I have used a 0.1 Ohm series resistor with a 22uF as implemented in the 28379D control card. I believe the purpose of the resistor is to add some ESR to the caps and act as a bleeder/snubber resistor, in case the trace is long.