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BQ25570: I can't find BQ25570 in TINA-Ti editor

Part Number: BQ25570
Other Parts Discussed in Thread: BQ25504

Hello,

Did you create a SPIECE model for BQ25570?

If no, is there any way to create a simulation for this part?

Thanks,

  • Hi Mohamed,

    Unfortunately, there is no model for this device.  There was a model for the BQ25504, which has the same boost converter, but we no longer support it.  The core is a hysteretic, peak current, discontinuous mode boost converter.  The MPP feature turns off the FET early if the input voltage drops below the MPP value.  There are models on the web for such converters.  Adding the MPP feature using an additional comparator and fixed MPP reference voltage (leaving out the sampling and resetting of that reference) should not be too difficult.  I hope this helps.

    Regards,

    Jeff