Datasheet

DESIGN EXAMPLE
-
+
C
IN
Bridge
12V
C
2.2 F
A
m
R
1 W
C
22pF
F4
D3
L1
D1
V
OUT
R
S
C
Z
C
P
R
Z
C
1nF
F1
R
T
C
2.2 F
B
m
R
E
C
1.2nF
F4
R
F
R
20k
ZA
W
Q1
R
5
G1
W
C
F5
22pF
R
ZB
20kW
12V
PWMCNTL
R
P
50kW
C
1.2nF
F2
R
B
L2
D2
C
OUT
R
5
G2
W
Q2
F1
C
1.2nF
F3
R
D
R
C
R
LOAD
R
A
CS
COMP
PHB
TSET
VREF
HVSEN
ZCDA
GDA
ZCDB
PWMCNTL
VINAC
GDB
VSENSE
AGND PGND
VCC
UCC28060
UCC28060
www.ti.com .................................................................................................................................................... SLUS767E – MAY 2007 – REVISED NOVEMBER 2008
An example of the UCC28060 PFC controller in a two-phase transition mode interleaved PFC pre-regulator is
shown in Figure 30 .
Figure 30. Typical Transition Mode Interleaved PFC Pre-Regulator
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