Hello Kazuya-san,
Thank you for your interest in the UCC2818A PFC controller.
For Q1: I am not able to find any characterization data for the UCC2818A device, however, I did find some data for the UCC2818 (non-A). I can't share the file, but I can summarize…
Part Number: UCC2818A-Q1 Other Parts Discussed in Thread: UCC2818 Hi team,
Just to double confirm if it's possible to synchronizing to an external clock, customer is not satisfied with the switching frequency accuracy.
If so, do you have any parameters…
Part Number: UCC2818A-Q1 Other Parts Discussed in Thread: UCC2818 HI TI,,
Please help me to get the correct gate resistor and mosfet for the UCC2818A-q1 because as given picture you are using 20E resistance which is source of switching loss .my spec…
Part Number: UCC2818A-Q1 Hi team,
What is the maxium voltgae VFF pin can stand of UCC2818A-Q1, since i notice on datasheet, the VFF voltage only shows around 4.7V as below. Does this mean, the VFF voltage can not exceed 4.7V?
Best Regards,
Gene
Part Number: UCC2818A-Q1 Hi team,
When realizing OVP protection, disable the output driver. When the OVP pin voltage drops to 7.5V, restart SS after recovery. Does it continue to adjust the previous overvoltage loop data or refresh to adjust loop with…
Part Number: UCC2818A-Q1 Hi Team,
As I notice on datasheet figure 5, Typical Application Circuit, the Vline is 85-270Vac. From customer requirements, if Vline ranges from 70-280Vac, can the Vff go beyond 4.7V? Or in this case how could customer adjust…
Part Number: UCC2818A-Q1 Hi Team,
Customer calculate the loop parameter based on datasheet, , it works fine at Vin 85-270V. While at Vin=75V or below, with full load the loop is not stable. Is there any action customer could take to realize low line full…
Part Number: UCC2818A-Q1 Hi team,
At low line, customer found small current distortion while input voltage come across zero both on their board and our EVM, have you experienced with this phenomenon?
(Green is input current, yellow is input voltage,…