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AN4214 Datasheet(PDF) 21 Page - STMicroelectronics |
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AN4214 Datasheet(HTML) 21 Page - STMicroelectronics |
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21 / 37 page  DocID023991 Rev 1 21/37 AN4214 Short-circuit test 37 7 Short-circuit test The short-circuit of output terminals of the converter is performed to analyze the safe operation of the converter in case of overload and short-circuit. The test is performed at 140 Vac, 230 Vac and 265 Vac in order to observe for any malfunction or failure. In particular the waveforms of drain switching voltage, drain current and Vcc of the device is observed when attempting the short-circuit. Looking into figures from 21 to 23, we can notice that there is no stress condition observed in power as well as control stage. The L6564 enters into protection mode with very low switching frequency of switching burst and MOSFET is well protected. Figure 21. Output short-circuit at 140 Vac |
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