LM5017 isolated flybuck

Alessandro Bergomi

Other Parts Discussed in Thread: LM5017, LM34927

Hello,

i need to design an isolated DC/DC converter (flybuck topology), with this design constraints:

Vin=20-50Vdc; Vout1=3.3V Iout1=100mA; Vout2=18V Iout2=200mA

I'm starting to do some calculations, but for me this design is not possible with LM5017.

I think the only one way to realize this solution, is to reduce Vout2.

Does someone can help me?

Thanks in advance, best regards

0 Kening Gao over 11 years ago

Hi,

Can you look at LM34927 which is also an flybuck switcher.

Regards

0 Alessandro Bergomi over 11 years ago in reply to Kening Gao

Hi,

thanks for the quickly answer! I'm checking the datasheet but i see that the I_lim (min) is the same of LM5017 (0.7A).

This is not enough for the design...Do you have other suggestions?

Best regards

Power management forum