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TPS568215: Output short-circuit withstand

ACJ
Prodigy 140 points
Part Number: TPS568215

Since the buck regulators with D-CAP2/D-CAP3 control mode only limit the current in the low side MOSFET, I suppose these regulators do not withstand output short-circuit. Could you confirm that?

Thank you,

Antenor

  • 0
    TI__Expert 8245 points
    Hi,

    When output shorted, current is limited the output voltage tends to drop because the load demand is higher than what the converter can support. When the output voltage falls below a certain threshold of the target Vout voltage, the UVP comparator detects it and shuts down the device after a wait time, then the device re-starts after a hiccup time, typically several ms. The hiccup mechanism protects the D-CAP devices from short damage.
  • 0 in reply to Iven Su
    Prodigy 140 points

    Hi Iven,

    Thank you very much.