• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 539 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.

LM5118: connection of RAMP pin

Olrik Maier
Expert 5020 points
Part Number: LM5118

Hi,

in the DS is described how to connect the RAMP pin of LM5118 with a capacitor to GND.

When doing a Webench Design the pin is connect by a resistor to VCC.

Do we have a explanation when connect to VCC or only with a capacitor to GND ?

webench_design_872819_80_889529395.pdf

Many Thanks

Best wishes,

Olrik

  • 0
    TI__Mastermind 21720 points
    Hi Olrik,

    The resistor from VCC to RAMP is added to increase the slope compensation. Increasing the slope compensation will help minimize sub-harmonic oscillation at high duty cycle conditions and is suggested for higher output voltage designs with the LM5118.

    Thanks,

    Garrett