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TPS65105 Increase delay of Positive Charge Pump

Ilona
Expert 8010 points
Other Parts Discussed in Thread: TPS65101

Customer asks:

"I'm having my board assembled with the device TPS65101. I need to adjust the increase the timings of positive charge pump O/P by few milliseconds from Negative charge pump.

Please let me know the possibility of achieving this."

  • 0
    TI__Expert 8010 points
    The internal start up- sequence is Boost (Vo1)--> Delay~100us--> Negative Charge Pump(Vo3)-->Delay~100us--> Positive Charge Pump (Vo2)
    The only way to increase delay is by adding an external circuitry. You can control via an transistor the FB- Pin of the negative Charge pump

    Regards,
    Ilona