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Original question:

LM3017 with high capacitive load

LM3017: LM3017 with high capacitive load

Sergey Tancher
Prodigy 30 points
Part Number: LM3017
Other Parts Discussed in Thread: PMP30162, LM51551,

We are investigating the LM3017 for a 8-12V to 50 boost converter for charche 6000uF capacitor.

Input current shall be limited to max 1200 mA.

Does any one know an easy way to charge these large load capacitor, and in the same way limit the output and short circuit current ?

  • 0
    TI__Mastermind 21720 points
    Hi Sergey,

    I would suggest using a SEPIC topology. This will allow for inherent short circuit protection that is not present in a boost regulator.

    Please consider using the LM51551. This an updated version of the LM3017. The LM51551 has hiccup mode operation to help limit the power dissipation during a short circuit condition. If configured in a SEPIC topology the output current can be limited by sensing the current in the output inductor. This is shown in PMP30162 (R24)

    Thanks,

    Garrett