Fairchild FEBFAN7688SJXA_CP14U306, Руководство пользователя

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© 2015 Fairchild Semiconductor Corporation 26 FEBFAN7688SJXA_CP14U306
• Rev. 1.1
9.8. AC Cycle Drop
Test Condition:
After AC input drop 0.5 cycle, check system to ensure that no damage occurred and
behavior is correct. If the AC drop time increases to 1 cycle, the Vbulk will drop too
much to make the 12 V V
O
also drop. So, it’s also about min. frequency of controller.
Test Results:
115 V

0 V

115 V 230 V

0 V

230 V
100% Load 100% Load
Pass Pass
Ch1: 12Vo, Ch2: Iin , Ch3: VAC , Ch4: Vbulk
115 V

0 V

115 V, Max. Load 230 V

0 V

230 V, Max. Load
Figure 21. Test Waveform of AC Cycle Drop
9.9. AC Transient
Test Condition:
AC Transient in 115 V  80 V  115 V and 230 V  160 V  230 V conditions, check
system to ensure that no damage occurred and behavior is correct.
Test Results:
115 V

80 V

115 V 230 V

160 V

230 V
100% Load 100% Load
Pass Pass
Ch1: 12V
O
, Ch2: Iin , Ch3: VAC , Ch4: Vbulk
115 V

80V

115 V, Max. Load 230 V

160 V

230 V, Max. Load
Figure 22. Test Waveform of AC Transient