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DRV103: Maintain 100% duty cycle.

Aaron Klijn
Prodigy 20 points
Part Number: DRV103

In order to permanently maintain a 100% duty cycle for OUT, is it OK to connect the "Delay Adjust" pin directly to ground such that it always stays below the 2.6V threshold?  We have found that a large enough resistor on the "Duty Cycle Adj" pin also gives us 100% but the datasheet suggests there may be a 90 to 95% max limit.  Thanks.

  • 0
    TI__Mastermind 19860 points

    Hi Aaron, 

    Aaron Klijn said:
    In order to permanently maintain a 100% duty cycle for OUT, is it OK to connect the "Delay Adjust" pin directly to ground such that it always stays below the 2.6V threshold?

    Yes, by tying the "Delay Adjust" pin directly to ground, the pin will set a infinite (continuous) delay of the initial 100% duty cycle. 

    Aaron Klijn said:
    We have found that a large enough resistor on the "Duty Cycle Adj" pin also gives us 100% but the datasheet suggests there may be a 90 to 95% max limit.

    Keeping the pin voltage less than 2.6V would set the output to 100% ON duty cycle, or DC output mode. 

    Best,

    David