This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Synchronous Buck Converter

Hi,

Good Day. This is related to the post below.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1127597/uc3825b-slope-compensation

The enhanced version B has a buffer on the clock but it doesn't look like it's the same as the CT pin. I was thinking the CT node was buffered for the transistor, but it looks like that's not the case.

Is this good for a synchronous buck converter. I noticed the outputs switch alternately on the clock. If a diode was used it will come on after the transistor pulse goes down. Using this to control the transistor replacing the diode, it has to wait another clock cycle. Would doubling the clock frequency work? (200khz instead of 100 kHz to make it work like the diode)

Or is there a better part for a synchronous buck converter?

Please advise. Thank you very much.

Best Regards,

Ray Vincent

  • Hello Ray,

    This is 22 hours old so I will answer it to prevent late action flag.

    TI has an extensive line of synchronous buck controllers.  Here are 3 products I found on the web site that are synchronous bucks supporting up to 100 Vin.

    Regards,

    Eric