Part Number: UCC28702 Tool/software: Hi,
I am facing a issue in my power supply section, the UCC28702 flyback IC is failing during EFT(bust) test.
The IC is failing during 4KV, P-N at 5KHz level. The IC is flikering for 4 to 5 times and totaly going…
Part Number: UCC28702 Hi,
We have been using UCC28702DBVT in a design for couple of years, but we were reported in some boards recently the the DC output voltage resets continuously when the input AC voltage increased beyond 232VAC. But this design…
Part Number: UCC28702 Other Parts Discussed in Thread: UCC28700 Hi Eric,
We redesigned our transformer and the basic functionality of circuit is working fine.
We tested entire input range from 85 to 305V AC and current from 250mA to 1A and is working…
Part Number: UCC28702 Other Parts Discussed in Thread: UCC28700EVM-068 Hi,
we are facing issue with UCC28702 design. Design is taken form WEBBENCH.
Unable to switching ON the power supply. the VDD pin of UC28702 is pulsating in between 21V to 8V.…
Why there is this discussion?
There are so many questions in the forum related to the startup of UCC2870X or other TI PSR controllers/switchers. We know the anxiety when customer met startup issues. So we develop to try to aim customer on their issues…
Hi IgorR
Thank you for reaching out.
The IC is most likely restarting because it has encountered a fault.
Please refer the following debug guides which might be helpful with the debug process.
https://e2e.ti.com/support/power-management-group…
Other Parts Discussed in Thread: TL431 Hello,
I would like to choose an isolated AC/DC flyback controller IC which would be best suitable to get 3.3V, and up to 3A output. It should be low cost (<0.5$)as it will be used in mass production.
First,…
Other Parts Discussed in Thread: UCC28700 ucc28700_datasheet.pdf page 10
8.3.1.3
The VS pin also senses the bulk capacitor voltage to provide for AC-input run and stop thresholds, and to compensate the current-sense threshold across the AC-input range…
Other Parts Discussed in Thread: UCC28700 , UCC28703 , TPS54060 , UCC28704 , UCC28702 , UCC28701 Hi, I'm looking for a cheap solution to get 3.3V or 5V and about 30mA directly from the line, prefarably in an all-SMD solution.
I need both, for different…
Other Parts Discussed in Thread: UCC28700EVM-068 Hi,
Now I'm promoting the UCC2870x that is controller with primary-side regulation to our customer. Then they are asking about accuracy of voltage regulation. In UCC28700EVM-068, it state min/max of Vout…
