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AFE030 Datasheet(PDF) 32 Page - Texas Instruments |
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AFE030 Datasheet(HTML) 32 Page - Texas Instruments |
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32 / 58 page ![]() + 330 kW 330 kW 330 kW 120 VAC to 240 VAC 50/60 Hz ZLLS410 or Equivalent ZLLS410 or Equivalent AVDD 3.3 V ZC IN ZC OUT AV DD AGND Zero Crossing Inside the AFE030 0.0 3.3 Time (5 ms/div) 0 50 100 350 0 -350 AFE030 SBOS588A – DECEMBER 2011 – REVISED DECEMBER 2011 www.ti.com Zero Crossing Detector Block The AFE030 includes two zero crossing detectors. Zero crossing detectors can be used to synchronize communications signals to the ac line or sources of noise. Typically, in single-phase applications, only a single zero crossing detector is used. In three-phase applications, both zero crossing detectors can be used; one component detects phase A, and one detects phase B. Phase C zero crossings can then be inferred from the data gathered from the other phases. Figure 38 shows the AFE030 configured for non-isolated zero crossing detection. Figure 38. Non-Isolated Zero Crossing Detection Using the AFE030 Non-isolated zero crossing waveforms are shown in Figure 39. Figure 39. Non-Isolated Zero Crossing Waveforms 32 Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): AFE030 |
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