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bq500212AEVM-550 wrong schematics

Perico Eldelospalotes
Intellectual 505 points
Other Parts Discussed in Thread: BQ500212AEVM-550, BQ500212A

Hello.

           I have purchased bq500212AEVM-550 evaluation module. I am looking at the schematics and the pcb and some parts have not the values specified in the schematics and other parts are not mounted (yes, in some cases the schematic states that are not mounted, but not in some other cases). I have downloaded the schematics from Texas Instruments website. Examples: D8 is not mounted and should be BAT54 Schottky diode, R45 and R51 are 100k (01D) and should be 1M and R54 is 100k and should be 523k.

           I want to know if there is avaliable an update of this schematic, because I need to know the exact design of the evaluation kit I am using in order to plan the design of my device.

                      Thank you in advance.

  • 0
    TI__Guru* 75976 points
    For design info on the bq500212A please ref to “bq500212A Schematic and material Application Package” Document SLUUAP8B located on the bq500212A product page.
    www.ti.com/lit/ug/sluuap8b/sluuap8b.pdf
    This design is intended as a practical design, where the EVM has additional features and options.
    Also see document SLUA698, also on the bq500212A product page.
    www.ti.com/lit/an/slua698/slua698.pdf
    The EVM UG schematic needs to be updated with the below changes:
    1.) R37 and R36 – Change from 1 ohm to 10 ohms. Improve I-sense filter.
    2.) C31 – Change from 0.1uF to 1.0uF. Improve I-sense filter.
    3.) Remove PWR_UP:
    a. Remove D8, C12, R51
    b. Change R54 and R45 to 10k
    4.) Remove D4, unused OVP