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Author Topic: SMPS using Mosfet Gate Driver IC  (Read 7096 times)
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king
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« on: May 28, 2009, 12:42:16 12:42 »

Hi!
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

Regards

King
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king
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« Reply #1 on: June 02, 2009, 05:36:20 05:36 »

Hi!
   If Anybody has the circuit of switch Mode power Supply (SMPS) for 24V and 5V together then please give it to me.

Regards

King
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samir
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« Reply #2 on: June 02, 2009, 10:59:36 10:59 »

you can use Hbridge ic for smpa(full bridge,half bridge topology).For 24 and 5 v supply first specify your specification
if low power one,use Power integration TOP switch(you can have multiple o/p ie 24,12,5) and easy to design

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poweralgorithm
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« Reply #3 on: June 02, 2009, 12:54:34 12:54 »

Take a look in this site : http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2524&param=en027097&redirects=SMPS
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tAhm1D
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« Reply #4 on: July 04, 2009, 06:09:38 18:09 »

Hi!
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

Regards

King

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
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Jehan
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« Reply #5 on: October 10, 2009, 03:16:48 15:16 »

Half bridge circuit or H-Bridge circuit means the same, you will need a external PWM as the both IR2104 and 2109 are Just drivers, they will need external drive signal which can be generated from a microcontroller or a dedicated PWM, IR even has a half bridge driver with on chip 50% duty cycle osscilator, only disadvantage is
you cannot vary duty cycle, it is fixed at 50% and feedback cannot be provided.
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khan_yousaf
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« Reply #6 on: October 13, 2009, 10:42:50 10:42 »

I had been working on a few designs a few years back ...but i tell you it gets very frustrating at times... The best way is to get hold of some off-the-shelf modules....
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