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Hi,
in datasheet "AVDD" is connect to +5V and "GVDD" is connect to CRC filter (1uF-3R3-1uF) at +5V,
but in EVM "AVDD" is connect to CRC filter (1uF-3R3-1uF) at +5V and "GVDD" is connect to +5V
What is the correct layaut?
Thanks.
Hi Giorgio.
GVDD is supply voltage for gate-drive circuitry. So it will have some switching frequency ripple on GVDD.
If use the same power supply to power AVDD and GVDD, it is more recommend to use a CRC filter like first picture to avoid influence AVDD.
BR.
Wei Qiu.