Part Number: UCC28634 Other Parts Discussed in Thread: UCC28633 The working region of UCC28634 is divided into five regions, in which the switching frequency and the voltage Vcs at both ends of the sampling resistance also have mutual restrictive relations…
Part Number: UCC28634 Other Parts Discussed in Thread: UCC28700 Dear supporters,
I need some explanation on ACon and ACoff parameters for UCC2863x controller.
They should indicate minimum and maximum AC (or DC if multiplied by sqrt(2)) input voltage…
Part Number: UCC28634 Other Parts Discussed in Thread: UCC28701 The datasheet says the operating mode should be DCM in te 0..100% load range and CCM reserved for overload conditions. Why is that? In my case the inductance calculated by Webench is 552uH…
Part Number: UCC28634 I actually would like some advice regarding the flyback transformer design. Perhaps this enquiry can be passed on to someone with expertise in this area.
I had wound two transformers on RM10 cores with turns ratio of 34:4:7. One…
Gangadhar
From what you provided it sounds like a fault condition is triggering when your output reaches 200mA.
Table 3 on page 42 of the UCC28634 datasheet lists all the fault conditions that can cause UCC28634 to shut down. I recommend you verify…
Part Number: UCC28634 Other Parts Discussed in Thread: UCC28630 , UCC28710 I am designing a 1kV V_IN flyback based on UCC28634 and have a problem with the startup circuit. The part has a steerable 700V current source connected to the HV pin, which is…
Hello,
1. The RHV1 resistor is for controlling the XCAP discharge. The data sheet does recommend between 180K and 220K. So you could increase the resistor value to 180 K in your design.
2. The data sheet example is for 19.5V 65 W design, your design…
Part Number: UCC28634 Dear Sir/Madam,
We are going to use the UCC28634DR design for AC-DC @85V-265V to 48, 1A.
Please confirm to move forward with this design.
Thanks & Regards
Gangadhar P
Hi Shreyas,
As stated in below E2E post as well, Webench do not support electrical simulation for UCC2863 4. I have forwarded the query for TINA model support to concerned team. We will get back to you soon.
https://e2e.ti.com/support/tools/sim…
Part Number: UCC28634 Tool/software: WEBENCH® Design Tools Hi
We are using the UCC28634d AC-DC Input:85V-265, Output:48V,1A.
Please find the attached files.
Please send us the Transformer Winding Orientation for all the Transformer_328uH AC…
