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PTR08100W - Controlling output voltage dynamically, can it be done

Intellectual 700 points

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My customer is looking to use the PTR08100W and use the Voadjust to change the Vout dynamically.  Use case.
Vin = 12v nominal
Vout = 0.6 to 5.0v
Load is purely resistive: 1.00 to 1.25 ohm (resistive heater).  So Iout will vary with Vout.
 Questions-
1) Can Vout be controlled by controlling the VoAdjust pin ?
2) Limits for VoAdjust ?
3) Can VoAdjust be driven by a DAC or Filtered PWM signal ? (examples circuits or designs ?)
4) would a DPOT be a better method ?

Any thoughts on this appreciated.

Thanks,
Dave Johnson


  • PTR08100 can be overstressed  when the voltage is dynamically controlled. This module cannot  be used with a digital pot or DAC or filtered PWM signal.

    Tom

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