Datasheet

R
SU
R
OVP2
C
IN
C
VDD
R
OVP1
Auxiliary
Winding
+
+
+
+
7
Slope
+
0.1 V
0.1 V
-0.1 V
REF (5 V)
1 kW
3.75 V
0.45 V
QR_DONE
(Oscillator)
LOAD_OVP
(Fault Logic)
LINE_OVP
(Fault Logic)
REF (5 V)
3CS
OVP
VDD
OUT (From Driver)
UCC28600
R
PL1
CS
R
CS
Power Limit
Offset
I
LINE
Burst
(from FAULT logic)
01
+
QR Detect
I
LINE
I
LINE
2
C
OUT
R
PL2
N
S
N
P
N
B
UCC28600
www.ti.com SLUS646J –NOVEMBER 2005– REVISED JULY 2011
Figure 7. QR Detect Details
Copyright © 2005–2011, Texas Instruments Incorporated 15