• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 302 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM20146: Discontinuous Conduction Mode operation

kura
Genius 4840 points
Part Number: LM20146

Is attatched waveform normal  Discontinuous Conduction Mode operation ?

Why one SW off waveform is different from next SW.

And we would like you to check customer circuit ,can I send circuit schematic by email?

7762.waveform.pptx

  • 0
    TI__Guru**** 191445 points

    Kura-san,

    That is generally the correct waveform for DCM operation.  Every other switching cycle the switch current is going slightly below ground before the part enters diode emulation mode.  You can send the schematic to j(dash)tucker(at)ti(dot)com.  Please include your circuit conditions, any specific design requirements and the equations or methods used (Webench, excel, etc) to calculate the external component values.