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TPS92682EVM-125: For consultation, there is a design manual for TPS92682EVM-125 on the Ti official website. If Q3 is removed from the schematic diagram, connect it to R19; This design, what will it change? Whether the short-circuit protection function stil

Bao Songhao
Intellectual 840 points
Part Number: TPS92682EVM-125

For consultation, there is a design manual for TPS92682EVM-125 on the Ti official website. If Q3 is removed from part 5.1 of the schematic diagram, connect it to R19; This design, what will it change? Whether the short-circuit protection function still exists

TPS92682.pdf

  • +1
    TI__Mastermind 18890 points

    Hello Songhao,

    Without Q3 you will not have PWM dimming or initial over current shut down due to short in the output because there is no series FET to dis-connect the load LED. Continued short should be protected due to output over-current protection.

    Thanks Tuan