Part Number: UCC2803-Q1 Other Parts Discussed in Thread: UCC28730-Q1 , UCC2803 , I am looking for the less BOM count design for 250Vin-800Vin DC supply, Where output is 24V/1A.
Can i remove the Opto section and auxiliary VCC section..
Vfeedback can i take…
Other Parts Discussed in Thread: UCC2803 , UCC2803-Q1 Hi, TIer
I'v checked Maximum rating of Comp. But The datasheet doesn't describe it.
What is the maximum rating of COMP Pin? Hope to see prompt answer.
Hi Ravi,
Are you referring to equation 7? This formula assumes the most basic use of the regulator from a single supply where the 13.5V zener would be always active, like the boost topology shown on page 1 of the datasheet.
For a flyback topology there…
Hello Michael,
Sorry to hear about your design not working.
I used Webench with 24-32Vin, 300Vout, 100mAout using Flyback topology with external switch. I saw 1 design with the UCC2803-Q1 (click on schematic below). Did you get something similar? This…
Part Number: UCC2805-Q1 Other Parts Discussed in Thread: UCC2805 , UCC2801 , UCC2803 , UCC2802 , UCC2804
Hi Expert,
UCC2805-Q1 was used on customer side. When they configure frequency based on the formula in datasheet. The resistor is 15k, and the capacitor…
Hi Jonathan,
Yes this is the nearest device to the LM25180.
Alternatively, they can also consider a PWM controller like the UCC2803-Q1.
Does that help?
Regards,
Harrison Overturf
Dear Eric,
You are right. I sent a copy of all it shows in simulation window.
Thanks for your help
Farzaneh
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