Texas Instruments UCC28517, Руководство пользователя

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SLUU117C − September 2002 − Revised July 2003
11 UCC28517 EVM
7 Reference Design Performance
Figure 7
OUTPUT A EFFICIENCY
vs
OUTPUT POWER
Efficiency
−
%
10 20 30 40 50 60 70 80 90
100
50
55
60
65
70
75
80
85
90
VIN = 265 V
VIN = 175 V
VIN = 85 V
95
100
POUT − Output Power − W
POUTB = 1 W
Figure 8
1 4 6 8
0
0.3
0.5
0.8
0.1
0.2
0.4
0.6
0.7
OUTPUT B SECOND STAGE EFFICIENCY
vs
OUTPUT POWER
Efficiency
−
%
POUT − Output Power − W
Figure 9
10 20 30 40 50 60 70 80 90 100
0.85
0.90
0.95
VIN = 265 V
VIN = 175 V
VIN = 85 V
1
OUTPUT A POWER FACTOR
vs
OUTPUT POWER
PF − Power Factor
POUT − Output Power − W
Figure 10
10 20 30 40 50 60 70 80 90 100
0
5
10
15
20
25
30
35
VIN = 265 V
VIN = 175 V
VIN = 85 V
OUTPUT A THD
vs
OUTPUT POWER
Current THD − %
POUT − Output Power − W