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TPS40210 Appl dc-dc Boost?

GerhardJL
Prodigy 90 points
Other Parts Discussed in Thread: TPS40210, PMP7970, PMP7979, LM5122

Hi Group,

I wish to design a dc-dc boost converter

Input source : LiPOL batt 4S  (13-17V)

Output Design spec : 60V / 3A

DC-DC Application Duty Cycle will be 4s then off for 15S

During ON Cylcle it will charge a Capacitor.

First time for me using weBench sim

It suggested using TPS40210DGQ


Has anyone used this device or are there other devices available more suitable?

Is webbench trustworthy?

Thank you for any feedback, recommendations.

Regards,

G

  • 0
    TI__Mastermind 35165 points

    Hi Gerhard,

    This design needs to supply 3 A continuous, correct?

    I would call this more of a corner case design and WEBENCH does not always handle these the best so some hand calculations are needed. For this example a very high amount of input current is needed and there will be a lot of power dissipation in the low-side MOSFET. The TPS40210 alone will probably not be able to drive such a MOSFET and keep it cool enough.

    Assuming this is a continuous load current the LM5122 may be a more suitable solution. I suggest looking at PMP7970 or PMP7979. You will probably need something in between these two. The low-side MOSFETs in PMP7970 may get too hot while PMP7979 is designed for much more current than you need.

    Best Regards,
    Anthony