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Original question:

Bidirectional DC-DC converter controller

LM5170EVM-BIDIR: Bidirectional DC-DC converter controller

Siddheswar Sen
Prodigy 170 points
Part Number: LM5170EVM-BIDIR

If we deactivate onboard outer voltage loop control, then:

  1. Will it maintain constant voltage at output in case ISETA is changed, if yes how?
  2. Will it provide desired output current as controlled by ISETA signal?

Regards,

Siddheswar Sen

  • 0
    TI__Guru* 78060 points

    Hi Siddheswar,

    If the voltage loop is disabled, you will lose the voltage regulation function.  Then the EVM becomes a current source regulated by ISETA signal. The LV dc current will be proportional to ISETA voltage.  For the EVM component settings, the LV port dc current will be:

    I_LV_dc = V(ISETA) x 20 A/V  for single phase,

    I_LV_dc = 2x V(ISTEA) x 20A/V for dual phase.

    This relationship is regardless the direction. 

    Thanks,

    Youhao  Xi, Applications Engineering