Is this possible to make SMPS using Mosfet Gate Driver ICs Like IR2109 or IR2104 and Micro controller.
And for that what i need, Do i need half bridge circuit or H-Bridge circuit? Please Reply
For topologies such as half bridge and full bridge where you need isolated gate drive for the high side MOSFET, you need a hi/lo side driver. (You need a high side driver for buck topology). You can use pulse driver transformer as well but that is difficult to wind properly for high frequency. But for topologies, such as push-pull, flyback, boost, forward, you do not need a hi/lo side driver. You can drive this directly with discrete circuitry or even a single low side driver.
You can find the 24v and 5v power supply using TOP-GX series IC (from Power Integrations Co.) here:http://www.sonsivri.com/forum/index.php?topic=19274.msg80242#msg80242