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UC3845: PWM controller with spread spectrum

Shibuya
Intellectual 2985 points
Part Number: UC3845

Hello

My customer is now using UC3845. They have been troubled with EMI in development phase. Therefore they want to use a PWM controller with spread spectrum from next development. They want similer pin out as UC3845. Do you have such device?

Best regards,

Tetsuro

  • 0
    TI__Genius 13660 points

    Hi Shubuya,

    There is no AC/DC controller with Spread-spectrum function.  

    EMI can be optimized by adding shielding, filter, isolation and improving layout design (increase the impedance of EMI propagation path ) and selecting components with less parasitic parameters (less ESR, ESL for cap, less ESC for inductance). Thanks.


    Regards,
    Teng