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UCC28056CDBVT Datasheet(PDF) 42 Page - Texas Instruments

Part # UCC28056CDBVT
Description  UCC28056 6-Pin Single-Phase Transition-Mode PFC Controller
PDF  55 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

UCC28056CDBVT Datasheet(HTML) 42 Page - Texas Instruments

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Frequency (Hz)
0.1 0.2
0.5
1
2 3 4 5 7 10 2030 50 100 200
500 1000
-75
-50
-25
0
25
50
75
d001
Gain_Plant
Gain_Ctrl
Gain_Loop
Frequency (Hz)
0.1 0.2
0.5
1
2 3 4 5 7 10 2030 50 100 200
500 1000
-180
-150
-120
-90
-60
-30
0
d002
Phase_Plant
Phase_Ctrl
Phase_Loop
u
:
u S u
CO
Z
CO
1
1
R
220 k
2
f
C
u
P
P
Z
CO
CO1
P
f
f
C
C
0.49
F
f
u
u
u
OSRe g
Z
CO1
M
P
Ctrl0
Out Re g
V
f
1
C
g
25 nF
f
G
V
u
P
B
f
f
K
30.0 Hz
B
Z
f
f
1.48 Hz
K
u
u
u
u S
B
Plant0
Ctrl0
1
f
G
G
K
6.66 Hz
2
u S u
u
u S u
Plant
B
Ctrl
B
G
j2
f
G
j2
f
1
u
u S u
Ctrl0
Line
2
0.0202
G
4
f
0.624 Hz
K
42
UCC28056
SLUSD37E – OCTOBER 2017 – REVISED NOVEMBER 2019
www.ti.com
Product Folder Links: UCC28056
Submit Documentation Feedback
Copyright © 2017–2019, Texas Instruments Incorporated
where
•
2 x fLine >> fP
•
2 x fLine >> fZ
(99)
Equation 100 describes unity at the gain cross-over frequency.
(100)
Equation 100 can also be expressed as shown in Equation 101.
(101)
Calculate the pole and zero frequencies using Equation 92 and Equation 93. Then determine the compensation
component values using Equation 89, Equation 90 and Equation 91.
(102)
(103)
(104)
(105)
(106)
Figure 31. Gain vs Frequency
Figure 32. Phase vs Frequency



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