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OPT8241: OPT8241

Eason Yuan
Intellectual 840 points
Part Number: OPT8241

Dear all,

Hello, I am experiencing the following problems while learning the reference circuit of OPT8241-CDK-EVM IB 10-50_REV2P0V1

What is the role of 1D14, D15 in circuit design.

What is the role of the 2U22 comparison circuit.

What is the function of the 3U22 output comparison result OUTA OUTB after XOR to COMP_MOD_FB?

  • 0
    TI__Expert 3800 points
    Hi!

    D14, D15 are a part of the snubber circuit for the illumination driver. The snubber circuit damps the ringing caused by the high speed switching of U15. U22 is a part of the delay feedback compensation network. It sets up a feedback path of the transmission delay of the illumination components which helps in correcting this delay.

    Hope this helps.

    Regards,
    Subhash