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UCC2895: ON23x11 OPTOCOUPLER, SLUM188

SAMRAT PUJARI
Intellectual 730 points
Part Number: UCC2895
Other Parts Discussed in Thread: LM5046

HELLO,

what is the exact part no of the model being used (ON23x11)? 

i tried observing the behavior of the this model by test circuit and results attached for different values of R3. I Observed different CTR .

For R3=1k  CTR=0.6

      R3=2K CTR=0.859

      R3=3K CTR=0.849

      R3=4K CTR=0.83

      R3=5K CTR=0.81

SO is that CTR Is function of diode current? 

any other model of OPTOCOUPLER / PHOTO-TRANSISTOR  is available? and exact part no the device?

thanks,

samrat

      R3=6K CTR=0.79

  • 0
    TI__Mastermind 27145 points

    Hi Samrat,

    Thanks for your interest in UCC2895. CTR is dependent on the forward current in the LED. Here is an example CTR vs forward current normalized to If = 5mA.

    I would suggest taking a look at the TINA model for LM5046. The model includes a symbol for PS2501 optocoupler.

    Best Regards,

    Ben Lough