© 2012 Fairchild Semiconductor Corporation
14
FEBFL7701_L31H008A • Rev.1.0.2
8.3.
Typical Waveforms: Steady State
Figure 14 through 19 show normal operation waveforms by input voltage and input
frequency. The output voltage and current maintains a certain output level with 120 Hz
ripple, as shown in the test results in the Table 5.
CH1: V
CC
,
CH2: V
DRAIN
,
CH3: V
LED
,
CH4: I
LED
Figure 14. Input Voltage: 187 V
AC
, Input Frequency:
47 Hz
CH1: V
CC
,
CH2: V
DRAIN
,
CH3: V
LED
,
CH4: I
LED
Figure 15. Input Voltage: 187 V
AC
, Input Frequency:
64 Hz
H1: V
CC
,
CH2: V
DRAIN
,
CH3: V
LED
,
CH4: I
LED
Figure 16. Input Voltage: 220 V
AC
, Input Frequency:
47 Hz
H1: V
CC
,
CH2: V
DRAIN
,
CH3: V
LED
,
CH4: I
LED
Figure 17. Input Voltage: 220 V
AC
, Input Frequency:
64 Hz
