LM63625-Q1: Is this part suitable for isolated flybuck?

Hello,

Thank you for considering our product. Could you consider the LM5160 or LM5017 family for your flybuck design?  To answer your question, if the negative limit is good enough in your application, yes you can use it as a fly-buck, but could you let us know your spec so we can be sure?

Thanks,

Youhao

Hi 

LM63625 can configure to be flybuck. Can you please clarify what's your application? What's the Vin range and the output voltage/current?

Thank you

Hi Gui,

Thanks for your reply. Below is the spec. Can LM63625 support it? 

Vin: 9-18V

Vout: 5V, 100mA

VSO1: 15V, 100mA

VSO2: -8V, 100mA

A quick estimation shows a little tight because the negative current limit is just -0.75A in the worst case.   If Vout load current is higher, it may be a better change to use the device in fly-buck.

We do have other devices having higher negative current limit if you can consider. 

Hi Gui--Please correct me if my above estimation is wrong.

Thanks,

Youhao