#boostconverter — Public Fediverse posts

Well, this is annoying.

I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.

They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.

But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).

The listing just seems to be ... wrong.

Annoying.

#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby

After failing to create a #symmetric #powersupply using an OpAmp and BJTs to split 24V by forming a virtual ground, I went the easy route. Two #BoostConverter set to 12V each are connected in series with the center being ground. This way I get symmetric +/-12V. Of course I don't rely on the #battery protection, but rather use a 900mA #PPTC #fuse per rail. Also a switch and some LEDs as indicator. Enough #JST sockets for my upcoming #synth projects.
#perfboard #diy #perfboard #KiCad

Switching Converter for EEPROM Programmer Taxes Solderless Breadboard - We all know that solderless breadboards have their limitations. All that stray cap... - https://hackaday.com/2023/12/08/switching-converter-for-eeprom-programmer-taxes-solderless-breadboard/ #boostconverter #programming #breadboard #solderless #switching #burner #eeprom #parts #rom

Minimizing Stress on a Coin Cell Battery - When it comes to powering tiny devices for a long time, coin cell batteries are th... - https://hackaday.com/2023/08/10/minimizing-stress-on-a-coin-cell-battery/ #boostconverter #buckconverter #batteryhacks #switchmode #voltagesag #coincell #battery #dc-dc #life #smps

DIY Magsafe Charger Feeds Off 12 V Solar Battery - [Steve Chamberlin] has a spiffy solar-charged 12 V battery that he was eager to use to power his lap... more: https://hackaday.com/2020/04/19/diy-magsafe-charger-feeds-off-12-v-solar-battery/ #boostconverter #laptopshacks #adapter #macbook #magsafe #how-to #12volt #apple #dc-dc #diy