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UCD3138064AEVM149: Power management forum

Yapeng
Prodigy 70 points
Part Number: UCD3138064AEVM149
Other Parts Discussed in Thread: UCD3138, UCD3138A

Hello experts, I am currently using UCD3138ALLCEVM-150,During the debugging process of LLC, if I want to obtain a PWM wave with asymmetric dead time, should I only need to adjust the following part?

  • 0
    Prodigy 70 points

    Can UCD3138 generate asymmetric PWM in resonant mode? In other words, make DT2 not equal to DT1+DT3

    Because my driver chip may have delays, resulting in inconsistent dead zones between the upper and lower driver waves of the half bridge，so I want the dead zone between 0A off and 0B on to be unequal to the dead zone between 0B off and 0A on
  • 0 in reply to Yapeng
    TI__Genius 14580 points

    Hello,

    The deadtime configuration between UCD3138 and UCD3138A. If you use UCD3138, the answer is yes.  You can use EV1.2.3.4 to get asymmetric deadtime.

    UCD3138A offers symmetric deadtime.

    Regards,