T
treez
Guest
Hi
Page 52 of the UCC28950 datasheet shows the COMP pin of the UCC28950 PSFB controller being probed with a scope probe. A 1k resistor is appended to the scope probe.
Can you please confirm that this 1k resistor is put there to prevent distortion of the COMP pin signal by the leakage current coming through the scope probe?
After all, the COMP pin is referenced to Diode bridge output negative, which swings down to -339V (below earth ground) 100 times per second.
UCC28950 datasheet
https://www.ti.com/lit/ds/symlink/ucc28950.pdf
Page 52 of the UCC28950 datasheet shows the COMP pin of the UCC28950 PSFB controller being probed with a scope probe. A 1k resistor is appended to the scope probe.
Can you please confirm that this 1k resistor is put there to prevent distortion of the COMP pin signal by the leakage current coming through the scope probe?
After all, the COMP pin is referenced to Diode bridge output negative, which swings down to -339V (below earth ground) 100 times per second.
UCC28950 datasheet
https://www.ti.com/lit/ds/symlink/ucc28950.pdf