Fairchild FSQ500L, User Manual

Page: 8 / 25

© 2011 Fairchild Semiconductor Corporation 8 FEBFSQ500L_H257v1 • Rev. 1.0.1
4.4. Soft-Start Test
4.4.1. Test Condition
Measure the soft-start waveform at maximum load with ambient, after short, after OTP.
Table 4. Test Result
Input Voltage Soft-Start Time
120V
AC
/ 60Hz 14ms Under
240V
AC
/ 50Hz 14ms Under
Figure 7. 120V
AC
/ 60Hz at Max. Load, Ambient
(Ch 1: V
O
, Ch 2: V
FB
, Ch 3: V
CC
, Ch 4: I
DRAIN
)
Figure 8. 240V
AC
/ 50Hz at Max. Load, Ambient
(Ch 1: V
O
, Ch 2: V
FB
, Ch 3: V
CC
, Ch 4: I
DRAIN
)
Figure 9. 120V
AC
/ 60Hz at Max. Load, After Short
(Ch 1: V
O
, Ch 2: V
FB
, Ch 3: V
CC
, Ch 4: I
DRAIN
)
Figure 10. 240V
AC
/ 50Hz at Max. Load, After Short
(Ch 1: V
O
, Ch 2: V
FB
, Ch 3: V
CC
, Ch 4: I
DRAIN
)
Figure 11. 120V
AC
/ 60Hz at Max. Load, After OTP
(Ch 1: V
O
, Ch 2: V
FB
, Ch 3: V
CC
, Ch 4: I
DRAIN
)
Figure 12. 240V
AC
/ 50Hz at Max. Load, After OTP
(Ch 1: V
O
, Ch 2: V
FB
, Ch 3: V
CC
, Ch 4: I
DRAIN
)
Ch2
Ch3
Ch1
Ch1
Ch1 Ch1
Ch1 Ch1
Ch3
Ch3
Ch3
Ch3
Ch3
Ch2
Ch2
Ch2
Ch2 Ch2
Ch4 Ch4
Ch4 Ch4
Ch4
Ch4