The UCC28019 8-pin active Power Factor Correction (PFC) controller uses the boost topology operating in Continuous Conduction Mode (CCM)

UCC28019

Manufacturer Part NumberUCC28019
DescriptionThe UCC28019 8-pin active Power Factor Correction (PFC) controller uses the boost topology operating in Continuous Conduction Mode (CCM)
ManufacturerTexas Instruments
UCC28019 datasheet
 


Specifications of UCC28019

Uvlo Thresholds On/off(v)10.5/9.5Operating Supply(max)(v)22
Startup Current(ma)0.1Operating Supply Current(ma)7
Vref(v)5Vref Tol(%)2
Duty Cycle(max)(%)99.3Practical Operating Frequency(max)(mhz)0.65
Pin/package8PDIP, 8SOIC  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Page 31
32
Page 32
33
Page 33
34
Page 34
35
Page 35
36
Page 36
37
Page 37
38
Page 38
39
Page 39
40
Page 40
41
42
43
44
45
46
47
48
49
Page 34/49

Download datasheet (2Mb)Embed
PrevNext
UCC28019
SLUS755B – APRIL 2007 – REVISED DECEMBER 2007
The individual loop factors, M
which is the current loop gain factor, and M
1
slope, are calculated using the following conditions:
The M
current loop gain factor:
1
if :
0
VCOMP
2
<
<
then : M
.
0 064
=
1
if :
VCOMP
2
£
<
3
then : M
=
0 139
.
´
VCOMP
-
0 214
1
if :
3
£
VCOMP
<
5 5
.
then : M
=
0 279
.
´
VCOMP
-
0 632
1
if : .
5 5
VCOMP
7
£
<
then : M
.
0 903
=
1
VCOMP
=
4
M
=
0 279 4 0 632 0 484
.
´ -
.
=
.
1
The M
PWM ramp slope:
2
if :
0
VCOMP
1 5
.
<
<
V
then : M
0
=
2
s
m
if : .
VCOMP
.
1 5
£
<
5 6
then : M
.
(VCOMP
=
0 1223
´
2
if : .
VCOMP
5 6
7
£
<
V
then : M
.
2 056
=
2
s m
VCOMP
=
4
V
2
M
.
(
. )
=
0 1223
´
4 1 5
-
=
0 764
2
m
s
34
Submit Documentation Feedback
.
.
V
2
. )
-
1 5
s m
V
.
m
s
Product Folder Link(s):
UCC28019
www.ti.com
which is the voltage loop PWM ramp
2
Copyright © 2007, Texas Instruments Incorporated