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AN2937 데이터시트(PDF) 29 Page - STMicroelectronics |
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AN2937 데이터시트(HTML) 29 Page - STMicroelectronics |
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29 / 41 page ![]() AN2937 Representative waveforms Doc ID 15418 Rev 1 29/41 Figure 14. OUT2 soft-end, no load A power-up sequence for the switching sections can be selected by connecting one EN pin to VREF2. The section with the EN pin connected to VREF2 begins the soft-start only when the other section is in regulation (its PGOOD is high) and makes a soft-end suddenly when the other section is turned off ( Figure 15 and Figure 16). Figure 15. Tracking soft-start EN2 connected to VREF2, no loads applied |
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