David,
I ran a webench design with newest generation of this product family UCC28C40. You could also use UCC28C40-Q1 as well if you have higher operating current requirements for example. It should be very similar to what you saw with UCC2813. Attached…
Hello Atul,
The question of what is the "best" solution depends on your specific goals. Most often, "best" translates into simplest or cheapest. I suggest that you investigate using one of the UCC2813-x family of low-cost PWM controllers, specifically…
Part Number: UCC28C53 I have a design using UCC28C53DR with the following parameters:
Vin = 85-265VAC
Vout = 24V/4A
fsw = 100kHz
When applying a 1.5A load to the output, I see this waveform on the Gate of the MOSFET.
The gate is clearly not…
Hello Matsumoto-san,
I'm sorry for the delay in our reply. Mike has been out of the office due to the holidays.
In the UCC2813-x datasheet, page 17, Figure 25 shows the resistance ratio to be 0.65R to 1R, top to bottom.
The actual values are not…
Hey Brian,
Yes, the information in the datasheets have the correct information. I've attached a powerpoint slide that can explain the UCC2802 VCC abs max question.
Section 9.3.1.7 of the UCC2802 datasheet has some more information about the VCC pin…
Art,
Thanks for the interest here. Yes-it can! This is a very popular controller for that application and requirement. See attached Webench design I ran as an example:
Regards,
John UCC2813QDR0Q1_12Vout_Flyback.pdf
I am suspecting as transition from discontinuous mode to continuous mode may be occurring.
A TPS40210 design will be much better than UCC2813 which needs Vin regulated to below 12V.
PMP7417 and PMP6656 are the best examples of starting points.
PMP5161…
webench_design_1362107_97_760128657.pdf Kartik,
I started from the ucc2813-2 product page here and did the webench design without any issues:
See attached webench report that I got.
I also tried it from the product folder of the UCC2813-2-Q1 and…
Hi to everybody,
I've attached the schematic of the power supply circuit.
Please consider, from your point of view, that pin J1.4 is short circuited to the pin J1.5.
The voltage at the net "VDC" is variable (220VAC -> 340VDC, or 3x400VAC -> 650V…
