Part Number: UCC28065 Other Parts Discussed in Thread: UCC28064EVM-004 , UCC28061 Dear TI team, I have a question regarding the start/stop point of the winding choke. I have seen in the datasheet of the UCC28065, the start/stop winding turn of the choke is…
Part Number: UCC28065 Other Parts Discussed in Thread: UCC28064 Hi,
We used UCC28065 for our AC-DC board from 360Vac to 15Vdc, 20A. We are seeing negative current spikes (6A) at primary side of the flyback transformer. This is happening at irregular intervals…
Part Number: UCC28065 Hello,
In one of our 600W PFC application, the input voltage can be 100Vac to 240Vac. In the UCC28065 datasheet, the thresholds for BRST and PHB is calculated for low range (90 - 132Vrms) and high range (180 - 265Vrms). The transition…
Part Number: UCC28065 Because the AC input current is high , so the filter size is too large.
Customer wants to use two filters and two rectifiers to connect with the two channels of the UCC28065.
Is such an idea feasible?
What are the risks?
thank you…
Part Number: UCC28065 Other Parts Discussed in Thread: UCC28070 Hi there, my name is Kian Fotouhi. I'm an electrical engineering student working on a high-power audio amplifier that will need a transition-mode boost PFC. The specifications will be:…
Part Number: UCC28065 Do you have a formula to calculate the on-time, based on the value of Rtset and the voltages applied to the Vinac and Vcomp pins?
Part Number: UCC28065 Other Parts Discussed in Thread: UCC28056 , Hello, I'm developing a PFC interleaved transition mode.
I know that some non-interleaved transition mode PFC controllers allow you to use an inductor without an auxiliary winding.
For example…
Part Number: UCC28065 Hello, I am using the UCC28065 in a 115VAC, 730W PFC application. I have noticed something curious about the phase interleave.
The application circuit is generally similar to the eval board, with smaller inductors to operate at higher…
Part Number: UCC28065 Over current operation of UCC28065.
When overload operation occurs ,
the 2 gate- drive output , which was previously operated 180 degrees out of phase , is turned off at the same time .
( See the operation waveform of the att…
Part Number: UCC28065 Other Parts Discussed in Thread: UCC28070 , UCC28061 , Hello Experts, Can this device implement bridgeless PFC, like below application note? https://www.ti.com/lit/an/slua517/slua517.pdf Best Regards, Fujiwara