SPRSP85A April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
PRODMIX
The internal VREG is supplied by the VDDIO rail and can generate the 1.2 V required to power the VDD pins. Although the internal VREG eliminates the need to use an external supply for VDD, decoupling capacitors are still required on the VDD pins for VREG stability and transients. See the VDD Decoupling section for details.