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isolated buck boost converter

Philipp Wech
Prodigy 120 points
Other Parts Discussed in Thread: LM5160

Hey,

i looked at the TI Design http://www.ti.com/tool/TIDA-00199. I also need to design a power supply for the 6 gate drivers of a 3 phase inverter.

This TI Design works from 20V to 30V. I want to use it with Vin = 12V. Can i use a buck boost controller instead of the LM5160? Or is it use a boost-converter to boost the 12V up to 24V and then use the LM5160?

  • 0
    TI__Mastermind 31580 points
    Hi Philipp

    This post should be in the non-isolated forum, I will move it for you.

    Regards

    Peter
  • 0
    TI__Intellectual 2320 points

    Hello Philipp,

    Can you please share the application schematic if you have one already.

    What is your secondary side load requirement for the gate driver? Is it same as the TI Design as you have listed here. If you are willing to work with a lower load requirement then there can be possibility to use the LM5160 as an isolated Buck-Boost regulator itself and serve your purpose. You can check out this link to learn how to use the LM5160 for the isolated Buck-Boost application.

    However, if your load requirements are on the higher end as in the TI design, using the boost converter before the LM5160 or using the Fly-back topology will be the correct approach.

    Regards,

    Sourav

  • 0 in reply to Sourav.Sen
    Prodigy 120 points

    Hello,

    thanks for the reply!

    The load requirement is lower as in the TI design. I need about 1W per output channel. The TI design had a bit more then 2W i think. I like the suggestion of using the LM5160 as an isolated buck-boost regulator. 

    I already made the schematic for this application and currently i am recalculating the values for the passives.

    greetings,

    Philipp