Part Number: UC2825B Other Parts Discussed in Thread: UC3823A , UC3825A , UC2825 Team,
My customer has been using this PWM Controller UC2825BN in a flyback converter for 20+ years. They are changing a few parts around this circuitry, especially the switching…
Steve, thank you for the super useful info. I have a few additional questions, and hope to bring a light to this UC2825B a bit more.
Is the LEB frequency the same as the PWM frequency? I wasn't able to find any figure showing the relationship between LEB…
Part Number: UC28025 Other Parts Discussed in Thread: UC2825 , UC2825B , UC2825A Hi team,
Is it ok to replace UC28025 by uc2825, uc2825A, uc2825B? What is the different between these devices? Thanks.
Hi
I found this now. Maybe this is the complete answer.
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1028674/uc28025-different-between-uc28025-uc2825-uc2825a-uc2825b
Part Number: UC1825A-SP Other Parts Discussed in Thread: UC3823B , UC3825B , UC1825A , UC3823A , UC1823A , UC3825A , UC2825A , UC2823B , UC2823A , UC2825B The datasheet of 5962-8768102EA includes a series of chips: UC1823A, UC2823A, UC2823B,UC3823A, UC3823B, UC1825A…
Hello Star
The waveforms of OUTA and OUTB look ok to me. I don't know where the other waveforms were taken from so I can't comment on them.
One thing that can happen with this IC is that noise on the I_lim/SD pin can disable OUTA or OUTB if it…
Hi Yue,
Some of the older versions of the controller have a 16V UVLO, www.ti.com/.../uc2825b.pdf , but it may not be in the right package.
The customer can check the issue by running the controller at 9V in the system and measuring the fet temperature…