FEBFL7701 Datasheet, PDF (19/24 Pages) Fairchild Semiconductor – 2.4W LED Ballast Using FL7701

9.3. THD Performance
Figure 29 shows the THD performance at different input frequencies. Test results are
quite similar, except the 90V_AC condition, but meets international regulations
(under 30%).
30
25
[%] ²⁰
15
10
THD_47Hz
THD_64Hz
5
0
90
110
180
220
Figure 29. THD Performance
[V_AC]
264
Table 5. THD Test Results
Input Voltage
90V_AC
110V_AC
180V_AC
220V_AC
265V_AC
Frequency
47Hz
64Hz
47Hz
64Hz
47Hz
64Hz
47Hz
64Hz
47Hz
64Hz
THD (%)
20.99
21.82
22.26
22.46
24.96
25.31
25.50
25.84
25.75
26.72
© 2012 Fairchild Semiconductor Corporation
19
FEBFL7701_L30U003A • Rev. 1.0.2