11 responses to “Testing switch mode voltage regulators”

  1. Chemary

    Hi, thanks for this interesting benchmark. I will take into account the results when I buy next regulators.
    I was thinking on buying some cheap LM2596 to get 5V@1A but after reading your article they seem to have a poor efficiency.

  2. Testarea surselor in comutatie | arduino.ro

    […] prezitna un test facut asupra surselor reglabile in comutatie. Sursele sunt alimentate la tensiuni diferite si pentru un rezultat ┬ámentine aceasi tensiune si […]

  3. Joe Price

    Good data, thanks for sharing. I may need to affix heat sinks to the regulators on order.

  4. Gil Elgez

    Thanks for sharing this valuable data. You saved me significant testing time. The MP1584 seems to be the efficiency and size winner as a BEC regulator in RC planes and Multirotors.

    Two of them could be paralleled for twice the current output with “OR-ing” diodes and the output voltage can be trimmed to compensate for the output diodes voltage drop.

  5. Berwyn

    If anybody wants to know how to make those LM2596 boards stable, you can do it simply by replacing the output cap with the low ESR ones recommended in the datasheet. (Different caps are recommended for different output voltages): http://www.onsemi.com/pub_link/Collateral/LM2596-D.PDF

  6. Peter

    Is there a way to control the output current on the MP1584. So that it will act as a CC-CV regulator?

  7. Pekka

    I see that your “LM2596” board is running at ~50khz which suggests it’s actually a LM2576 or something similar.

  8. Cheap eBay Stuff! | MCNB Electronics

    […] slight spike occurring at 51kHz. I didn’t think anything about it at first, but I came across this┬ácomment, which leads me to believe that I┬áhave a LM2576 (which has an internal oscillator at ~52kHz) as […]

  9. Werner

    I used the Kim055 and with 2A load the output voltage dropped to 4,4V, which is too low to charge eg a smartphone. Did anybody else have this problem too? And what to to about it?

Leave a Reply