About LM5116's Cramp and Css

Ozawa

Other Parts Discussed in Thread: LM5116

I have a question for LM5116.

Please teach me the maximum value of Capacitor.

　・Maximum value of Cramp capacitor

　・Maximum value of Css capacitor

0 EricLee over 9 years ago

Hi Ozawa
I don’t think there is a limitation on the size of the SS capacitor.
Cramp value is recommended to be less than 3nF.
Regards,
EL

0 Ozawa over 9 years ago in reply to EricLee

Thank you for your support!

I have a question.

I used LM5116's tool 「LM(2)5116/WG Quick Start Component Calculator」.

As a result Clamp value is 5600pF.

3nF but not less than either would not be a problem?

0 EricLee over 9 years ago in reply to Ozawa

Hi Ozawa
I checked the Quick Start calculator. There is no limitation implemented inside the tool.
Regards,
EL

0 Ozawa over 9 years ago in reply to EricLee

Hi Eric Lee-san

Thank you for your support.

My customer setting Rramp = 128.2kΩ.

In customer case, Should customer be on how much the Cramp?

(Eric-san said less than 3nF)

I have a customer circuit file.

But , They do not want to post for a circuit to online.

0 EricLee over 9 years ago in reply to Ozawa

Hi Ozawa-san

Not enough information to estimate Cramp.

Regards,

Power management forum