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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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UM1063 Fiches technique(PDF) 24 Page - STMicroelectronics |
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UM1063 Fiches technique(HTML) 24 Page - STMicroelectronics |
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24 / 32 page  Test results UM1063 24/32 DocID018573 Rev 2 Note, in this case, the presence of the 2-finger during the classification phase and theT2P signal now asserted (T2P is valid low). 7.3.2 Transition from PoE to auxiliary and auxiliary to PoE Figure 18 shows the behavior of the PM8803 when commuting sources. The image depicts the transition from PoE to an auxiliary source whose voltage is ~10 V lower then PoE. It can be seen that when the auxiliary voltage is applied (SA pin goes above its threshold) the current drawn from the PoE drops to a few milliAmps. Smooth transition occurs as can be seen from the output voltage (blue line). Figure 18. Switching between PoE and auxiliary source |
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