LM5146-Q1: How to select the value of "current slope" in the DCDC testing project "load transient response"？

Lv Xin

Part Number: LM5146-Q1

Tool/software:

How to select the value of "current slope" in the DCDC testing project "load transient response"？And why we slect the value of "Current slope"?

7 months ago

0 Timothy Hegarty 7 months ago

TI__Guru 68757 points

Hello,

You can set the di/dt of the load step with the electronic load. 1A/us is a good starting point.

Regards,

Tim

0 Lv Xin 7 months ago in reply to Timothy Hegarty

Prodigy 10 points

Hello Timothy,

Thank you for your answer. Why is it recommended to choose the value 1A/us? Thank you!

0 Timothy Hegarty 7 months ago in reply to Lv Xin

TI__Guru 68757 points

That's typically what the electronic load can do while maintaining linearity and also using a conventional lab setup. 0.1A/us is too slow and won't really show the performance, and 10A/us (if the load box can do it) will need a very low parasitic inductance setup with short load lines.

Regards,

Tim

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LM5146-Q1: How to select the value of "current slope" in the DCDC testing project "load transient response"？