LM5180EVM-DUAL: Operating Waveform of Switching characteristic @ LM5180EVM-DUAL

teritama

Expert 2165 points

Part Number: LM5180EVM-DUAL
Other Parts Discussed in Thread: LM5180

Hello Team,

In Figure 9 and Figure 11 of User's manual , why SW Node Voltage and Fly back Diode Voltages drop once?

I want this causes and solutions.

over 6 years ago

0 Timothy Hegarty over 6 years ago

TI__Guru 73402 points

Hello,

With the LM5180 in BCM operation, switching occurs near the valley of the SW (and diode) voltage oscillation. However, swithcing in DCM (fixed at 350kHz) can occur anywhere during the ringing period, depending on the load current level.

Regards,
Tim

0 teritama over 6 years ago in reply to Timothy Hegarty

Expert 2165 points

I see.
Thank you for your answer.

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LM5180EVM-DUAL: Operating Waveform of Switching characteristic @ LM5180EVM-DUAL