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TMS320F28075: Using the internal 1.2V regulator

Hideaki Nambu
Mastermind 9165 points
Part Number: TMS320F28075
Other Parts Discussed in Thread: C2000WARE

Hello,

My customer would like to copy the schematic of the TMDSCNCD28075. Do you have any concerns?

The schematic is,   C:\ti\c2000\C2000Ware_2_00_00_03\boards\controlCARDs\TMDSCNCD28075\R1_1\F2807x_120controlCARD_R1_1_SCH_05Aug2014.pdf

 

My point would be, is the “VDD_MCU_1V2” external circuit in the schematic proven by many users ?

It is not F2837x, so I would expect the 1.2V regulator is good, and cloning the schematic is a best practice.

  • 0
    TI__Expert 8105 points

    Hideaki,

    Yes, the 1.2V regulator circuit is good and you can reuse it for your design. The same goes for the rest of the board with one exception:

    “The circuitry used to drive the C2000 MCU’s voltage references on the controlCARD is not ideal. Instead, we recommend that users use the voltage reference driving circuitry found in F2837xD_VREFHI_12bitDrivingCkt.pdf which can be found in the same directory as this document. The circuit shown there is for the F2837x device, but a similar approach can be done for the F2807x.“

    This notice was taken from the TMDSCNCD28075_Infosheet_v1_2.pdf document located in the F28075 folder

    Regards,
    Peter