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PTH04070 minimum current limit operation

Other Parts Discussed in Thread: PTH04070W

Hello

I have two questions about PTH04070.

1.How many Minimum current limit Value?

2.Upon removal of the fault, the output voltage will promptly recover.

 How many cycle the output voltage will promptly recover?

  • Masaya:

    1. PTH04070W will function normally under  minimum loads.

    2. PTH04070W can only operate in Current limit protection (CLP)under the following conditions. It requires minimum input and output capacitance of 47µF ceramic each ,and recommended 47µF polarized capacitor  on output  bus.

    a. In order for CLP to function a1 The inhibit pin must either be open , no external pullup resistor  or a open drain FET must be open if used to control Power on.

    b. CLP  restart   and auto recovery is initialed  after the current Limit(CLP) detect a short output bus in about 40-100 cycles. The unit automatically restarts  in  soft power up mode  in about 7-10ms after the short is removed .

    Tom

  • Tom san

    Sorry for not explaining enough.

    No.1 question means

    How many minimum Overcurrent threshold ?
    typ is 7A
    about Datasheet P3 Io(trip) data
  • Masaya-san :

     PTH04070W Overcurrent Protection  minimum is not defined. However, the OCP typical minimum is 3.8 Amps at 25°C.

    Tom