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…
Part Number: UC2825B Other Parts Discussed in Thread: UC3823A , UC3825A , UC2825
I am searching for ways to set up the UC2825B for a flyback converter DC to DC; however, the its datasheet is very generic without pointing into how to set up the circuitry…
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.
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…
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
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 exceeds…
Hi Xiaojun,
Your issue is that the output voltage can not be stabilized.
My suggestion is:
1. use the pure resistance load instead of the amplifier load to eliminate the cause of the load.
2. try to lower the bandwidth of voltage Loop to regulate…
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…
