Part Number: UCC28631 Tool/software: There was an detected issue with the following AC/DC controller : SO7_A6.7_I3.9_h1.75_reflow, your material number UCC28631DR, received with delivery document no. 628746927.
The power supply was interrupted at the…
Part Number: UCC28631 Other Parts Discussed in Thread: LM5155 In Webench design, the max Vac is only up to 480Vac. However, in customer's application, it would be up to 528Vac but Webench can not support. Could you comment on how to design it with 528Vac…
Part Number: UCC28631 Other Parts Discussed in Thread: UCC28630 , UCC28701 Tool/software: WBDesign54 1.pdf The UCC28631 Isolated Flyback Converter presented by P ower Designer is not working with alternating errors of "25 - AC (i.e. bulk cap level) under…
Part Number: UCC28631 Other Parts Discussed in Thread: UCC28630 Tool/software: Hi Team, A customer of mine is facing the following problem with the low power startup .
I have been designing a Switching Supply based on the UCC28631 and we are looking…
Part Number: UCC28631 Tool/software: Hello,
The webench power designer circuit for 5V1A from mains flyback controller says that the primary and aux polarity is the same, whereas the secondary polarity is different. The transformer detail asks for winding…
Part Number: UCC28631 Hi team,
Could you let me know the minimum TEMP TRIP (thermal protection shutdown temperature) of UCC28631?
Best regards, Kazuki Itoh
Part Number: UCC28631 Other Parts Discussed in Thread: PMP20495 Hi team,
The VSENSE absolute min. voltage of UCC28631 is specified as -0.3V.
Is it allowed if the input current is limited <100mA
In order to protect the VSENSE pin from excessive negative…
Part Number: UCC28631 Hi team,
Could you help to clarify the output voltage sample point of UCC28631?
Is the output voltage sampling triggered by the CS pin voltage goes below I_PK(dem) as shown in Figure 25?
The output voltage sampling delay…
Part Number: UCC28631 Other Parts Discussed in Thread: PMP20495 Hi team,
I'd like to check one thing regarding UCC28631 VSENSE pin open or short pin-check.
Does VSENSE pin detect open if thevenin resistance of the divider RTH is <10kOhm and detect…
Part Number: UCC28631 Other Parts Discussed in Thread: UCC28630
I designed a flyback using UCC28631. It does not startup and when I probe the SD pin I obtained this waveform. Please tell me the type of fault indicated by such pulse count. The flyback…
