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Of course, you may struggle to prove this is the case, leaving you without a device or a power supply converter. All the circuits have different performance. The voltage divider circuit is not recommended for use in the high current application as it has a low output current and lower efficiency. LM7805 12v to 5v converter: thoughts on “ Efficient DC 12V to 5V conversion for low-power electronics, evaluation of six modules”
Over 80% of customers feel it is an excellent product. The main point to be aware of is that you’ll need a beefy charging cable to get the higher wattage rating needed for USB-C circuits. Make sure you select the right cable for your needs. The converter handles input current between 8-35V and provides a steady 5V/3A supply. It’s also waterproof and can be screwed into position. I bought a couple of these to convert teensy 3.1's 3.3v data signal up to 5v to communicate more effectively with adafruit's neoPixels. E.g., in an LM2596-based adjustable DC-DC converter, it was “forgotten” to install a capacitor between the output and sense-input (thereby multiplying the output ripple with a factor related to the difference between output voltage and sense-voltage of 1.23V(Cff in LM2596 datasheet: https://www.onsemi.com/pub/Collateral/LM2596-D.PDF). However, adding a 15nF capacitor did not solve all of the ripple (I would consider a ripple up to 100mV acceptable). Arek and Roedi. These fine modules are fantastic. Been playing with a lot of solar stuff, also mppt … but the main problem is efficiency! The modules draw power and other stuff making most of them not useful. The fine does … what it’s name does … BUT … you can make it even better because there is an SS34 diode at the input for polarization protection. Well, why would you need that? It’s a schottky diode so you will loose about 0.3V of input voltage and it will also decrease efficiency!A 12v to 5v dc converter can also be implemented with an LM317 voltage regulator IC. It is very useful in mid to high current applications(1 Amp and more). It is also found in desktop computers as voltage surge protection circuits. What is the cut-on voltage for the BOB on the HV side if HV is set to 5v? I ask because sometimes the device I'm connecting to the HV side has 5v signals, and sometimes it has 3.3v signals (with HV set to 5v in both cases). It seems to work, but I wonder if I'm on the hairy edge. If cut-on is 2-2.5v then I think I'm ok, if it's around 3v then it might miss sometimes. The power supply for the test was providing 12V, but due to the voltage drop in the ammeter, the input voltage of the modules is a bit lower. Results The schematic circuit shown below is for medium current circuits, it is useful for (1-70mA) medium current draining circuit eg. light emitting diode indicators, driver circuits, low voltage transistor operations, and many more. Hello, and thanks for the article! I am looking for an efficient converter for my led christmas lights. I have a solar panel to charge a 12V battery, but need 5V @ 175ma to power the leds. Do you think the “fine” would be the best choice, or do you have another suggestion? Thanks again!
May I use it with 3.3V in both sides in my hand made shield if I connect it a 3.3V microcontroller? I meant to have the option of connection a 3.3V or a 5V microcontroller.
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Your circuit that you are trying to drop the voltage for as a whole goes between the points reflected by U2. If that circuit draws current, you need to account for that in the equations. Worse, if the current that circuit draw changes, so does the voltage U2!!
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