help gate drive circuit for buk

Thread Starter

muhammetztrk

Joined May 16, 2008
4
I need a hel for my project.I will do buck (step down ) circuit but I cant find pwm controlller circuit.
 

Caveman

Joined Apr 15, 2008
471
Typically, people these days use a switching power supply controller IC. The manufacturers' websites provide lots of application notes, simulators, and wizards to help design with them. Some manufacturers are Texas Instruments, Linear Technology, and National Semiconductor.
 

Thread Starter

muhammetztrk

Joined May 16, 2008
4
thanks man. but I want full circuit design dc dc converter(12 to 5) and its gate drive circuit

can u help
 

SgtWookie

Joined Jul 17, 2007
22,201
Take a look at the link that Digi Dave posted.
There are five pages of links to various designs for many applications.
Besides, you didn't specify how much current you need.
 

thingmaker3

Joined May 16, 2005
5,073
You've got an N-channel MOSFET as a high-side switch. Try a P-channel MOSFET instead, or try another driver.
 

Thread Starter

muhammetztrk

Joined May 16, 2008
4
mistake is only that ? mosfet type?

I m not sure tl494 pin connections and ır2117s pin connections
do you know about that
 
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