No hay artículos en el carro
No hay artículos en el carroInformación del parámetro: Propiedades del módulo: Módulo Buck entrada de voltaje: CA 5 V - 30 V / CC 5 V - 48 V. Voltaje de salida: CC 3,3 V - 33 V. Corriente de salida: máximo 2,2 A (el chip regulador de voltaje puede soportar una corriente máxima de 3 A y puede funcionar a una corriente de salida de 3 A durante un corto período de tiempo) Potencia de salida: 35 W máx. Lugar de aplicación: - Este módulo se puede aplicar en el entrada de voltaje más alto que el campo reductor de voltaje de salida, como: batería, transformador de potencia, fuente de alimentación de voltaje ajustable de bricolaje, fuente de alimentación de computadora portátil. - Reducción de equipos industriales. El paquete incluye: 4 convertidores Buck
Rob from Dundalk
Comentado en los Estados Unidos el 18 de diciembre de 2024
The small size worked well for my application. And the high current rating makes them usable in many applications.I am using one to provide power for a string of micro leds on an O gage train.
bitt3
Comentado en los Estados Unidos el 17 de diciembre de 2024
Just what I needed worked fine accessories up and running now
Bull 30290
Comentado en los Estados Unidos el 10 de diciembre de 2024
Bought these for a project at work where I just needed to drive a 0.1A cooling fan and 20mA LED from an existing 48VDC regulated power supply. Applied voltage to the unit (measured at 48.1VDC), output was initially at 4.5V. Slowly turned up trimpot trying to get to 12VDC out, but the transistor [literally] exploded at about 10V. Suspecting possibly just a bad unit, I replaced it with a second one from the pack. Same result at around 10V. Other reviewers here noted the M2956T chip versus the M2956HV. The ones I received all had M2956HVT chips, but still couldn't handle the voltage range. Unfortunately just a junk product. Had to order a different step-down converter and it delayed my project a week. Will try to upload photos if the app will let me...
RunRaptorRun
Comentado en los Estados Unidos el 3 de septiembre de 2024
These are decent enough AC-to-DC switch mode power supply modules, but the listing claims they have an LM2596HV when in fact they are made with LM2596T. This is even apparent, if you look carefully, in the product listing photos. The HV versions have a higher input voltage rating and the product appears to be spec'ed for that assumption.The LM2596T has a max DC input rating of 40 VDC, not the 48 or 50 VDC claimed in the listing. Even with the diode drop in the bridge rectifier, 50V is well beyond the limits of the regulator and right at the rating of the input filter cap. This is all so sloppy and misleading.All of that only matters if you need a higher input voltage than 40 VDC. And don't forget that AC voltage is measured in RMS so you need to convert that to peak voltage and that also can't exceed 40 V. So the claimed input rating of 30 VAC is ~85 V p-p or 42.5 V peak which also exceeds the 40 VDC input rating of the the regulator.These things will almost certainly release magic smoke if you attach 50 VDC to the input, but if you stay below 40 VDC (or peak) then these might well be useful.
Scrimshaw
Comentado en los Estados Unidos el 3 de septiembre de 2024
UPDATED Review: I noticed another reviewer mentioned that these are built with the LM2596T instead of the LM2596HV, so I checked mine -- sure enough, they are. The absolute maximum voltage, as the other reviewer mentioned, is indeed 40V on the chip. These have been working fine for me, because I'm only feeding them 24VAC, which is rectified to about 34VDC. So, for my application it works, but I am subtracting 2 stars for the incorrect product description, because someone else may be sorely disappointed if they need the higher voltages.Original, unedited Review Below:This is a nice little board with basically a pre-packaged adjustable voltage regulator. It’s based around a LM2596HV regulator, which can handle up to 60V input, but this board is limited to only 50V input because they used capacitors rated at 50V. Take note of this, unless you want your capacitor to go “poof!” suddenly and explosively.It’s also nice that it has an integrated bridge rectifier, so you can feed it AC or DC input voltages, and the output can be up to 35W, or 2.2A, whichever limit you reach first. I tested it with a simple 10V DC input (into the AC terminals), and I was able to adjust across a range of 2.8V to 7.9V. I assume I could only get 7.9 V max output since I was essentially crossing 3 diodes (the two in the bridge rectifier, plus one in the voltage regulator), which makes sense. I’m very happy with this, and it give me a way to easily reduce some power supplies that are a bit too high voltage for certain applications. 5 Stars.
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