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TPS65150: Double check the TPS65150 schematic

Vic Kuo
Prodigy 70 points
Part Number: TPS65150

Hi Expert,

Our customer use LVD panel module with TPS65150 solution, please double check the TPS65150 schematic as below.

And give us some suggestion.

Screenshot the panel module SPEC as below,

 

Thanks,

Vic

  • 0
    TI__Expert 6330 points
    Hi Vic,

    I have notified our expert regarding this topic. Please expect a response by 4/23/19.

    Thanks,
    Aaron
  • 0
    TI__Mastermind 18550 points
    Hello,
    I reviewed your schematics and it mostly looks good. My comments are:
    1. VGH feedback divider resistor values seem to be incorrect. To achieve VGH=16V, R179 should be ~690K ohm. Please use equation 10 from the datasheet to calculate its value correctly.
    2. Positive charge pump capacitor C214 does not need to be this big (currently 22uF in your schematics). Since current draw from VGH supply is fairly low in your display specification, you can simply use a 0.33uF capacitor as shown in typical application schematics in the datasheet.
    3. Voltage rating of capacitor C214 should be at least 25V.

    Kind Regards,
    Liaqat