Part Number: UCC28720 Other Parts Discussed in Thread: UCC28710
I made a Flyback using UCC28710. It works well. I replaced the controller by UCC28720.
According to two datasheets, there is no many difference between two controllers such as maximum switching…
Part Number: UCC28720 Hi,
We are using UCC28720 as per attached image below.
In few of the power supplies, we found Parts R91, R92 ( Current Sense resistors), U1 ( Switcher) , T1 ( Transistor connected to the switcher drive) and R2 ( Transistor Base drive…
Part Number: UCC28720 Hello,
I copied the reference design inside UCC28720 datasheet, including same part numbers for discrete. The design gives the expected output with no load connected, and when a 10 ohm load is added the voltage drops to zero with…
Part Number: UCC28720 Other Parts Discussed in Thread: UCC28722 , UCC28880 , UCC28910 Can we design 5V, 0.5A isolated power supply module with this IC? If i try with TI Webench it shows that junction temperature lower than ambient temperature. Please advise…
Part Number: UCC28720 Customer wants to design a 5V 7.5W application referring the EVM.
Is it enough change that only current sense resistance is changed from 2.15 ohm to 1.56 ohm, using the same transformer with Lp=1.5 mH and turns ratio of 15.42:1? …
Other Parts Discussed in Thread: UCC28720 , UCC28720EVM-212 , UCC28700 , UCC28704 , UCC24636 , UCC28730 , UCC24650 Hello, I've re-created the UCC28720-EVM on my own circuit card, emulating everything "almost" exactly - placement and layout is very very close…
Other Parts Discussed in Thread: UCC28720 Hi,
I received the following question from my customer.
There is the R4 on the figure 30 of the datasheet.
Is this resistor for VDD filter?
Could you show me how to calculate this resistor?
Best Regards,
Kuramo…
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…
