8 Performance Data and Typical Characteristic Curves
8.1 Efficiency Result of 4-Point Average on 20-Vout
Table 8-1. Efficiency Test Data on 20-Vout
V
IN
(VRMS)
P
IN
(W)
V
OUT
(V)
I
OUT
(A)
P
OUT
(%)
EFFICIENCY
EFFICIENCY
4pt-AVERAGE
Average
Switching
Frequency @
Full Load
90
69.693
20.010
3.250
100%
93.31%
150 kHz
90
52.107
20.010
2.440
75%
93.70%
90
35.067
20.000
1.630
50%
92.96%
90
17.583
20.000
0.810
25%
92.13%
90
7.269
20.000
0.325
10%
89.42%
115
68.871
19.953
3.250
100%
94.16%
93.4%
160 kHz
115
51.772
19.952
2.440
75%
94.03%
115
34.912
19.945
1.630
50%
93.12%
115
17.535
19.945
0.810
25%
92.13%
115
7.284
19.943
0.325
10%
88.99%
230
69.940
19.944
3.250
100%
94.02%
92.4%
220 kHz
230
52.065
19.946
2.440
75%
93.48%
230
35.343
19.947
1.630
50%
91.99%
230
17.950
19.943
0.810
25%
89.99%
230
7.733
19.942
0.325
10%
83.81%
264
69.440
20.010
3.250
100%
93.65%
230 kHz
264
52.558
20.010
2.440
75%
92.90%
264
35.744
20.000
1.630
50%
91.20%
264
18.252
20.000
0.810
25%
88.76%
264
7.979
20.000
0.325
10%
81.47%
CoC Tier 2, 4pt-average
89.0%
CoC Tier 2, 10%-load
79.0%
Performance Data and Typical Characteristic Curves
12
Using the UCC28782EVM-030 65-W USB-C PD High-Density Active-Clamp
Flyback Converter
SLUUBZ3B – MAY 2020 – REVISED AUGUST 2020
Copyright © 2022 Texas Instruments Incorporated
