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Vauxdvihl
Joined: 01 Jan 1970
Posts: 92
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 27 Aug 2001 10:35 |
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Hello everybody !!
I serach for a "PWM-Circuit" for controlling a "Buck/Boost-Converter" !!
Does anybody have a circuit !!
Thank you
*****************************************
Please don't reply unless you have useful information to add on this post.
Any other replies are always welcome via PM.
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MITSUKO
Joined: 06 Jun 2001
Posts: 49
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| 28 Aug 2001 18:49 |
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What is a buck/boost converter ?
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C-Man
Joined: 19 Jul 2001
Posts: 1303
Helped: 73
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| 29 Aug 2001 16:44 |
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A Buck converter is a switchmode regulator which generates a lower voltage than it's supply voltage.
A Boost converter works the other way round 
regards
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chief451
Joined: 01 Jan 1970
Posts: 12
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| 29 Aug 2001 20:45 |
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And a buck/boost converter generates a lower or higher voltage than the input voltage but
requires two switches
ByE
chief451
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stephenpan
Joined: 25 Dec 2001
Posts: 12
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| 07 Jan 2002 20:24 |
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anybody know how to design PWM regulator...??
or any other info link?
thanx
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amberhawk
Joined: 22 May 2001
Posts: 18
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| 15 Jan 2002 23:36 |
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have you considered a sepic design?
anyway,check out the LinearTechnology's
LTC1625
No RSENSE™ Current ModeSynchronous Step-DownSwitching Regulator
In linear's DesignNote 233 a buck/boost convertor is explained with this chip.
data sheet:
hxxp://www.linear-tech.com/pdf/1625f.pdf
designNote 233:
http://www.linear-tech.com/pdf/dn233f.pdf
rgds
amberhawk
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Sebi
Joined: 02 Jan 2002
Posts: 63
Location: Hungary
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| 19 Jan 2002 10:49 |
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Hi,
LM1578A from National Semiconductors can
also work as buck-boost converter.
Sincerely: Zsolt
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