TPS563219A: Current Protection

Kazuhiko Hirano

Part Number: TPS563219A

Hello,

Datasheet 7.3.4 says “And then, the device will shut down after the UVP delay time　(typically 14 μs) and re-start after the hiccup time.” Here, the hiccup time means tHiccupOn specified in 6.5?

Best regards,

K.Hirano

over 3 years ago

0 Young Zhao over 3 years ago

TI__Genius 9280 points

Hi ,

Yes.

When the VFB voltage falls below the UVP threshold voltage, the UVP comparator detects it.The device will shut down after the UVP delay time (typically 14 μs) and re-start after the hiccup time (7 times of soft start time)----in 6.5 Electrical Characteristics session .

BRs,

Young

0 Vincent Zhang(BSR) over 3 years ago

TI__Expert 4795 points

Hi Hirano,

The hiccup time means tHiccupoff, which is 7cycles.

0 Kazuhiko Hirano over 3 years ago in reply to Vincent Zhang(BSR)

TI__Genius 12263 points

Young, Vincent,

Thank you for your responses.

Let me confirm one thing.

Which is the “1 cycle”, 1/650KHz or Tss?

Best regards,

K.Hirano

0 Young Zhao over 3 years ago in reply to Kazuhiko Hirano

TI__Genius 9280 points

Hi Hirano,

1 cycle unit should be one times of Tss.

BRs,

Young

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TPS563219A: Current Protection