PWM Controller ICs Choices

Top_Gun007 · 13th April 2010, 05:53 PM

Can anyone suggest a good PWM controller IC. It will be used in a Half-Bridge converter and then possibly in a Full-Bridge configuration too. All suggestions are welcomed, as I have never used a PWM IC with feedback control before.

Sch3mat1c · 14th April 2010, 04:36 AM

TL494, or 598 if you like totem-pole outputs. Or UC3525, etc. Same basic chips, the latter is faster and beefier.

Unfortunately, drive capacity of these doesn't really help much, because the bipolar output stages don't drive a coupling transformer very well, and you'll probably be using a transformer, or an IR2101 type driver, to run the bridge.

Tim

Top_Gun007 · 14th April 2010, 10:04 AM

Thanks for that. I think i will probably experiment with the UC3525 PWM controller and use it with a driver IC. I guess there are application schematic diagrams available on the data sheet for the UC3525. As i've never used this IC before, are there any schematics available for the UC3525 to start the ball rolling???

Sch3mat1c · 14th April 2010, 09:20 PM

Tons, the damn thing seems to pop up every other thread on this forum section!

13th April 2010, 05:53 PM	#1
Top_Gun007 diyAudio Member Join Date: Nov 2006	PWM Controller ICs Choices Can anyone suggest a good PWM controller IC. It will be used in a Half-Bridge converter and then possibly in a Full-Bridge configuration too. All suggestions are welcomed, as I have never used a PWM IC with feedback control before.

14th April 2010, 04:36 AM	#2
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	TL494, or 598 if you like totem-pole outputs. Or UC3525, etc. Same basic chips, the latter is faster and beefier. Unfortunately, drive capacity of these doesn't really help much, because the bipolar output stages don't drive a coupling transformer very well, and you'll probably be using a transformer, or an IR2101 type driver, to run the bridge. Tim __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

14th April 2010, 09:20 PM	#4
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	Tons, the damn thing seems to pop up every other thread on this forum section! __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

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14th April 2010, 10:04 AM	#3
Top_Gun007 diyAudio Member Join Date: Nov 2006	Thanks for that. I think i will probably experiment with the UC3525 PWM controller and use it with a driver IC. I guess there are application schematic diagrams available on the data sheet for the UC3525. As i've never used this IC before, are there any schematics available for the UC3525 to start the ball rolling???

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