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AN4346 Fiches technique(PDF) 30 Page - STMicroelectronics |
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AN4346 Fiches technique(HTML) 30 Page - STMicroelectronics |
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30 / 33 page ![]() Electrical waveform AN4346 30/33 DocID025107 Rev 1 3.7 Output short-circuit During a short of the output connector, all the energy stored in the output electrolytic capacitor is discharged into the output side loop and no current will flow into the external LED preventing their failure. The converter is able to regulate the output current to a minimum level reducing the input power during this fail. Figure 45. Short-circuit behavior at 100 Vac - 50 Hz Figure 46. After short-circuit at 100 Vac - 50 Hz CH1: DRAIN pin CH2: CS pin CH3: VOUT CH4: VCC pin CH1: DRAIN pin CH2: CS pin CH3: VOUT CH4: VCC pin Figure 47. Short-circuit behavior at 30 Vac - 50 Hz Figure 48. After short-circuit at 230 Vac - 50 Hz CH1: DRAIN pin CH2: CS pin CH3: VOUT CH4: VCC pin CH1: DRAIN pin CH2: CS pin CH3: VOUT CH4: VCC pin |
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