Part Number: UC2854B Other Parts Discussed in Thread: TINA-TI , Tool/software: TINA-TI or Spice Models Hello Team,
can you provide a PSPICE model for the UC2854B, please?
Thanks and Best Regards,
Hans
Part Number: UC2854B-EP Section 9.2.2.9 of datasheet (SGLS318A –NOVEMBER 2005–REVISED NOVEMBER 2015) discusses connecting a resistor (Rb1) from Vref to pin 6.
Page 5 of SLU177A (Revised December 2005) seems to indicate that this resistor …
Part Number: UC2854B-EP In this document on page 16 figure 11. I'm not able to find how to calculate the value Rsp? Is the resistor Rsp the same value as Rs?
Part Number: UC2854B Other Parts Discussed in Thread: UCC28070A
Hi,
Can I also ask if the overshoot in the PFC output voltage after a peak current draw can be reduced by increasing the DC/Low frequency gain of the total compensated…
Part Number: UC2854B What is the tolerance for the 3V reference? It appear from the min max values, it is about +/- 2%. Is this correct? Or is it better?
Part Number: UC2854B Other Parts Discussed in Thread: UCC28180 What is the maximum supported switching frequency of the UC2854B? Datasheet page 11, figure 7 implies 800kHz. But TI web selection tool indicates 200kHz.
I am currently at Fsw=200kHz for a…
Other Parts Discussed in Thread: UC2854B Does the UC2854B have a minimum voltage limit set for current limit?
The UC2854B suggests to use 1V across the sense resistor for good noise margin. From the point of reducing power dissipation, it is preferred…
Other Parts Discussed in Thread: UC2854B Good morning,
I have a problem with PFC controller UC2854B during phase of output capacitor charge that occurs when the line voltage have a short interruption.
At the end of line interruption the current that flows…
Thank you Harish. Appreciate the help.
Please see the attached example before and after comparison. Here we reduced the X-filter capacitance by 1/3 and the harmonic distortion is generally improved, except the 13th harmonic still fails by about 3mA.…