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Original question:

LM5170EVM-BIDIR: Bidirectional converter for hybrid energy source & energy management

LM5170EVM-BIDIR: TINA_TI Reference design problem

Praveen Nambisan
Intellectual 460 points
Part Number: LM5170EVM-BIDIR
Other Parts Discussed in Thread: LM5170

Hi,

I am trying to simulate LM5170 reference design provided. I am assuming the LM5170 TINA-TI Reference Design provided under the design tab is same as the typical application found in LM5170 datasheet. 

I am not able to understand why two extra MOSFETs are used as marked and an open voltage source.

I would like to simulate for one voltage source on one end and load (Resistor) at another end with an outer voltage loop control. The LM5170 TINA-TI Reference Design (.TSC) file seems incomplete or some other typical application design is provided.

  • 0
    TI__Guru* 78540 points

    Hi Praveen,

    I believe V2 was placed there by the model creator to be ready to serve as a source for the LV port when you want to run boost.   The two breaker FETs are connected in common source configuration, to be able to block the current in both directions.

    Thanks,

    Youhao Xi, Applications Engineering