Switcing/Digital 5 volt bec circuit, are there any?

[himeros]

I did a search, but found no switching 5 volt bec circuits. I am sure there must have been one in the past, but if not, is there any help here for one? Thanks for looking

Himeros :)

[Chippie]

Go to National Semiconductor's web site...lots of info there on buck regulators

[himeros]

Yes, I found many online. I thought there would be more on the DIY thread.

Himeros :)

[Unterhausen]

The commercial BECs I've looked at impressed me as being very close to something I designed with the help of the National Instruments website. A bec is just a 5v DC-DC converter.

[vintage1]

The commercial BECs I've looked at impressed me as being very close to something I designed with the help of the National Instruments website. A bec is just a 5v DC-DC converter.


..with all the interference issues unresolved.

Which is why I wouldn't mess with making my own. The commercially available ones are cheap, and I am fairly sure that at least the Dimension boys have spent time de-trashing theirs.

[himeros]

Thanks for all the replies, I have desided to go with a commerical unit. I did find lots of designs online for 1 to 6 amps switching devices that would work, if I wanted to spend the time finding parts, and making one.

Himeros :)

[Zlatko]

Himeros,

Sorry didn't see your post earlier but try
http://www.dimensionengineering.com/DE-SW050.htm

Its good, works well and no problems with interference. I've changed almost all my linear voltage regultaors for that ... and "comatose" is here ( somewhere ) if you need extra help or have "special" requests :)

Cheers

[himeros]

Thanks for the reply. I am going this time with a commerical unit for 3 amps bec. I did find that web site you pointed me to after I posted, but only saw the 1 amp model.

Himeros

Himeros,

Sorry didn't see your post earlier but try
http://www.dimensionengineering.com/DE-SW050.htm

Its good, works well and no problems with interference. I've changed almost all my linear voltage regultaors for that ... and "comatose" is here ( somewhere ) if you need extra help or have "special" requests :)

Cheers

[skylinux]

Here is a Texas Instrument 5V 1.5A Voltage Regulator for $1.25 a piece.

Spark Fun (http://www.sparkfun.com/commerce/product_info.php?products_id=107)

[Probedude]

Here is a Texas Instrument 5V 1.5A Voltage Regulator for $1.25 a piece.

Spark Fun (http://www.sparkfun.com/commerce/product_info.php?products_id=107)

That's a linear regulator, not a switching one.

Dave