The following website: http://www.ti.com/tool/PMP9517 has a power supply design which I am considering using in one of my applications.
The top of the page says small form factor 10W offline flyback power supply reference design. Down the page on the…
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…
Other Parts Discussed in Thread: UCC28720 Dear TI people or other very nice helping guys,
For a 1-10V fluorescent lamp dimmer I've selected this device make a flyback converter to power a simple MCU and a few other components. Besides minimal no load…
Other Parts Discussed in Thread: PMP9088 , UCC28720 , UCC28722 Hi,
I would like to know if I could use UCC28720 controller instead of UCC28722 in the "6W USB Charger Reference Design" (www.ti.com/tool/PMP9088).
I know they are not pinout and package…
Part Number: UCC28720EVM-212 Other Parts Discussed in Thread: UCC28712 , , UCC28720 Hi team,
Can the board design of UCC28720EVM-212 be applied for evaluating UCC2871x (such as UCC28712) because those 2 parts are replaced with pin-to-pin? I assume some…
Part Number: LM5023 Other Parts Discussed in Thread: UCC28740 , UCC28720
I generated a Mathcad sheet for datasheet example. Then updated it with my design. I am noticing that my High line (275vac and 400vdc) Frequency at current limit , I am above 130khz…
Hello BR,
The UCC28722 is the same device as the UCC28720 and does not have the internal high voltage startup.
You would use trickle charge resistors to charge up the VDD capcitor.
However, it you want to use the UCC28720 you could use a series pass…
Part Number: UCC28720EVM-212 Other Parts Discussed in Thread: UCC28720 Hello, my question is can the "UCC28720EVM-212 5W Evaluation Module" be extended to have 12V output along with 5V which it already has.
Hello Ras,
The UCC28722 drives IGBTs and is better suited for extremely high voltages and would work for your application.
However, the UCC28701 is designed to drive FETs and will also work for your application.
They both use trickle charge startup. There…
Part Number: UCC28740 Other Parts Discussed in Thread: TL431 , UCC28720 , UCC28600 , LM5023 Hi,
I am having problems with a AC.DC convertor based on UCC28740 5V/3A
My VS is under 4V , CS at around 800mV and switching frequency (1A) around 30Khz
What…