#buckboost — 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

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

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

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

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

Эффективная запитка от литиевых аккумуляторов (серия TI TPS63xxx)

Эта статья посвящена разбору решений по запитке 3,3-вольтовых контроллеров (и их периферии) от литиевых аккумуляторов, напряжение которых меняется в процессе работы от 4,2 В до 3 В и даже ниже, в случае глубокого разряда. Получить стабильные 3,3 В в этом случае не так-то просто и, кроме этого, задача питания подобной аппаратуры от аккумуляторов выдвигает множество специфических требований, удовлетворить которые тоже непростая задача. Обо всём этом мы и поговорим далее (решение есть!).

https://habr.com/ru/companies/timeweb/articles/813285/

#timeweb_статьи #TPS63xxx #TPS63000 #TPS63020 #TPS63030 #TPS63070 #TPS63802 #BUCKBOOST #DCDC #Liion #питание #конвертер #преобразователь