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TOP232G can be used as HV Buck? (like LNK304)

Posted by: treez on

Hi,

Would you agree, the TOP232G can be used as a HV buck just like the LNK302?

...for TOP232G, all that would be needed would be to feed a resistance from Vin to the M pin. ..Ans also, to use a bootstrap cap off the Vout liek in LNK302, and connect from this, an R/Zener, back to the control pin....which woudl also be  fed by a 10u via a 10R

Can you see any reason why this wouldn't work?





TOP232G

https://www.power.com/products/topswitch/topswitch-fx/top232gn?langcode=en



LNK302

https://www.power.com/sites/default/files/product-docs/lnk302_304-306.pdf

Would the attached TOP232G schem be workable? What V(out) would it give?

 

Files

Attachment 大小
TOP232G Buck 3.pdf 156.5 KB

评论

Submitted by PI-Wrench on 01/10/2022

It is possible to use TOPSwitch in a buck configuration, though I am unsure of your motivation for doing so. Here is an early treatise on using TOPSwitch in said manner.

https://www.power.com/sites/default/files/forum/files/top%20switch%20Buckconverter.pdf

Keep in mind using TOPSwitch in this way will be a little more problematic than a busk converter employing a device like the Link TN2, as the control pin is used to provide both a control signal and operating power for the TOPSwitch.