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Dual Output power supply low component count

first_name last_name
Prodigy 70 points
Other Parts Discussed in Thread: LM5143, LMR38010, LM5145

Hi Team,

We need a dual output non-isolated converter . Specifications are as follows, 

Input : 40V to 70V , 

Output1 : 24V / 6A limited,

Output2 : 12V / 1A limited 

Operating Temp : 0-40C

Can you please specify a suitable controller /Regulator with low component count ?

Thanks,

Sivamani

  • 0
    TI__Guru 73072 points

    Hi Sivamani,

    We have a dual-output controller - the LM5143 - but it's rated to 65V operating, 70V abs max.

    12V/1A is ideal with a converter (integrated FETs). Consider the LMR38010 80V/1A converter (also available in 2A). 

    24V/6A requires a controller - take a look at apps example #3 in the LM5145 datasheet.

    Note, SYNCOUT of the LM5145 may be able to drive SYNCIN of the LMR38010, thus achieving some input ripple current cancellation.

    Regards,

    Tim