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  
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UCC28019
SLUS755B – APRIL 2007 – REVISED DECEMBER 2007
The capacitor on VINS, C
, is selected so that it's discharge time is greater than the output capacitor hold up
VINS
time. C
was chosen to meet one-cycle hold-up time so C
OUT
N
HALF _ CYCLES
t
=
CVINS _ dischrg
2
´
f
LINE (min)
.
2 5
t
=
=
25 6
. ms
CVINS _ dischrg
Hz
2 47
´
-
t
CVINS _ dischrg
C
=
VINS
é
ê
VINS
ê
R
´
ln
VINS
2
ê
.
V
0 9
´
ê
IN _ RMS (min)
ê
ë
-
25 6
. ms
C
=
VINS
é
ê
100
k
W ´
ln
ê
ê
.
V
0 9 85
´
´ ç
ê
ë
42
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will be chosen to meet 2.5 half-line cycles.
VINS
ù
ú
ú
BROWNOUT _ th(min)
ú
æ
ö
R
VINS
2
´
ú
ç
÷
R
R
+
ú
è
ø
û
VINS
1
VINS
2
=
0 63
.
m
F
ù
ú
0 76
. V
ú
100
k
W
æ
ö
ú
÷
ú
. M
k
6 5
W +
100
W
è
ø
û
Product Folder Link(s):
UCC28019
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Copyright © 2007, Texas Instruments Incorporated