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Buck Converter Step Down Voltage Regulator Charging Indicator 2021-03-02T01:36:13+00:00

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  • Grant Yardley
    March 2, 2021 at 1:36 am
    Post count: 0
    #62172 Reply |

    Hello.

    In regards to https://www.amazon.com/DROK-Adjustable-Converter-Transformer-Protective/dp/B07JZ2GQJF , I am trying to establish what the charging indicator/display shows, where does it get information from, what mode etc.

    I plan on using something like this to take 10Ah of LTO batteries (Lithium Titanate) and attach a USB-C PD board. I believe that the output will be sufficient, the input will range from 13.2v to 16.8v. What does the charging display refer to, and would this be suitable to use as is, or if I plan to charge the batteries directly, would I need a diode to protect the unit during battery charging? (source batteries)

    Circuit would be linear, battery has charging points, then connected to the converter, converter connected to the USB-C PD board.

    Regards,

    Grant.

    Drok
    Keymaster
    March 2, 2021 at 8:33 am
    Post count: 2971
    #62208 Reply |

    Hello Grant Yardley，

    We are not sure exactly how it is. Did you connect USB-C PD board to converter output or input?

    For charging battery, you can connect diode in series to converter output port, that can prevent backfeed current.

    Best regards.

     

     

    Grant Yardley
    March 2, 2021 at 9:52 am
    Post count: 0
    #62218 Reply |

    Sorry, I asked a lot of questions.

    Specifically, when does the “fully charged” led light up?

    Drok
    Keymaster
    March 3, 2021 at 8:51 am
    Post count: 2971
    #62337 Reply |

    Hello,

    When actual load current decrease to 10% of preset current, “Charging” led will be off and “Fully” led is on.

    For example, preset current is 1A, if actual output  current  is lower than 0.1 A, “Fully” led is on.

    Best regards.

    Edwin
    January 13, 2022 at 2:32 am
    Post count: 0
    #87592 Reply |

    Hello, if the preset current is already set to the max and the “charging” led is still turned on (load current more than 10% of preset current), is it still ok to continue using the step down voltage regulator module or is it not recommended for the load current to be be more than 10% of the preset current?

    Drok
    Keymaster
    January 14, 2022 at 7:21 am
    Post count: 2971
    #87677 Reply |

    Hello,

    That is not warning sign, charging led is charging status indicator. When actual current is below 10% of preset current, that means battery is almost full or it is not charging.

    Best regards.

    Edwin
    February 3, 2022 at 7:17 am
    Post count: 0
    #88868 Reply |

    Hello,

    Just to confirm, charging led will be on when the output load current is below 10% of the preset current.

    Example preset current is 1A, when the output load current is less than 0.1A, charging led will be on and full led will be off, when output load current is 0.1A to 1A, full indicator will be on and charging led will be off. Is this correct?

    Drok
    Keymaster
    February 9, 2022 at 8:35 am
    Post count: 2971
    #89232 Reply |

    Hello,

    When the output load current is below 10% of the preset current, “Charging” indicator is off and “FULL” indicator is on.

    “FULL” indicator means battery is amlost fully charged.

     

     

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