Part Number: UCC28051 Data sheet for UCC28051 gives equation 16 for selecting compensation components. Equation 16 doesn't seem to return usable values for CV2. For the equation I'm using the following values:
Vac(max) = 265, Fac = 60, gm = 100e…
Part Number: UCC28051 Other Parts Discussed in Thread: TIDA-00701 In reference design TIDA-00701 the Bridge Rectifier power loss is calculated.
The power losses calculation uses average input current rather than rms input current. Why is the average current…
Part Number: UCC28051 Other Parts Discussed in Thread: PMP9640 , UCC28019 , UCC28180 , UCC28019A , PMP Hi,
Good Day. I have a customer who is working with UCC28051. Please see below the response of our customer to your query. Thank you very much.
I have decided…
Part Number: UCC28051 Dear Teng,
I would like to understand little more on the below points.
1. as you said the R21 and R22 will influence the system configuration how far? What would be the output regulation if I use direct feedback instead of opto-coupler…
Part Number: UCC28051 Other Parts Discussed in Thread: UCC28063 , UCC28180 , UCC28019A Hi Team,
UCC28051 is transition mode pfc controller and datasheet "8.2.1 Design Requirements" output power is 100W.
My customer output power requirement is 400W…
Part Number: UCC28051 Other Parts Discussed in Thread: UCC28019A Hi Team,
There is a good new that we could DIN TI product!
Customer is looking for the replacement of NCL2801
https://www.onsemi.com/pdf/datasheet/ncl2801-d.pdf
Please help suggest TI solution…
Hi,
As posted in my previous reply ,isolated design for UCC28051 is not available on Webench and it does not support isolated design through panel as well.
Since the query is addressed ,we shall be closing the post.
Thanks and Regards,
Umayal
Hello,
The UCC28051 needs an aux winding to detect zero current. It will not work without it.
The UCC28056 will work without and aux winding for ZCD. I did not know that Webench limited the input to 270V.
I do have another option for you. You could design…
Part Number: UCC28051 Hi team,
My customer would like to measure gM.
I would like to know the measurement method.
There is a description of gM; min.60uS / typ.90uS / max.130uS in the data sheet.
The conditions are Ta=25℃ and Vcomp=3.5V.What is the load…
Part Number: UCC28051
Hi,
1. Relation with VO_SNS and COMP Customer recognize that COMP signal would be “(reference 2.5V – VO_SNS) x Gm x output impedance”. Could you provide the number for Gm and output impedance ? I think the number…
