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2A DC / DC buck converter test with regulation and voltage and current display

TechEkspert 8931 31
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #31 17169684
    TechEkspert
    Editor
    There is a slight "overshoot" in relation to the set voltage when switching on.
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  • #32 17169776
    wieswas
    Level 34  
    The oscillogram shows that the 47uF capacitor discharged in 3ms, so I conclude that it was discharging through very little resistance so the starting current must have been large.
    So you can imagine how long the capacitor 4700 uF would discharge, and even more so, for example, a battery charged with a converter.
    So I wonder if my colleagues reporting damage to the converter did not turn off or turn on the converter loaded with high capacity. (this is just a guess)
    In the meantime, I found a pdf for the MP2307 chip (attached)

Topic summary

The discussion revolves around a DC/DC buck converter module featuring adjustable output voltage (0-16.3V) and current measurement, displayed on a backlit LCD. Users express interest in purchasing the module, with some mentioning its availability for PLN 36 at Gotronik and on eBay. Concerns are raised regarding the module's performance, particularly its output ripple voltage, which is reported to be excessively high (up to 1.5V at 1A load). Users suggest potential improvements, such as adding larger output capacitors to reduce ripple and enhance stability. The quality of the connectors is criticized, with recommendations to solder wires directly for better reliability. The module is identified as a "mini360" type, operating at 320kHz, and users discuss the implications of its design on performance, particularly under varying load conditions. The conversation also touches on the lack of a schematic and the need for better component quality to ensure reliable operation.
Summary generated by the language model.
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