UC1825: Datasheet and App Note for UC1825BJ

Hi Hong, thank you for sharing the resource. 

What are the difference between the UC1825, UC1825A, and UC1825B? The datasheet you share doesn't indicate technical data for the UC1825B but UC1825A. 

Does UC1825B has the LEB feature or frequency/deadtime like original UC1825? I can't really tell by looking into the datasheet. 

Hi,

You need to go to the late pages like the below to see the differences.

The differences include packages, number of pins, and temperature ranges, etc. The core for all is the same.

Hi Hong Huang,

Thank you for pointing it out the package and temperature differences there. 

When looking into the Leading Edge Blanking (LEB) section, it's unclear to me whether the UC1825BJ has a LEB feature or not, or it actually follow the Oscillator set up as the old chip UC1825. Can you help confirm it?

Hi Hong Huang, 

Thank you for the quick response. The capture of the LEB in my previous posting is from the datasheet source you shared earlier for UC1825BJ. My interested part is UC1825BJ. Just want to clarify, does UC1825BJ support LEB?

Hi Hong Huang, 

Thank you for the confirmation. 

I am aware that the part is obsoleted. We have the design in house using the UC1825BJ and have purchased a large volume of UC1825BJ for the last time purchase. That design is now needed some modification so these questions came up. 

Hi Hong Huang, 

I can't find any datasheet for UC1825B, but a more generic datasheet as below. Do you have one for just UC1825B?