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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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L6711 Fiches technique(PDF) 32 Page - STMicroelectronics |
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L6711 Fiches technique(HTML) 32 Page - STMicroelectronics |
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32 / 50 page  Soft start L6711 32/50 13 Soft start During soft start, a ramp is generated increasing the loop reference from 0V to the final value programmed by VID in 2048 clock periods as shown in Figure 15. Once the soft start begins, the reference is increased: upper and lower MOS begin to switch and the output voltage starts to increase with closed loop regulation. At the end of the digital soft start, the SS_END signal is then driven high. The Under Voltage comparator is enabled when the reference voltage reaches 0.6V while Over Voltage Comparator is always enabled during soft start with a threshold equal to the 115% of the programmed reference or the threshold programmed by ROVP (see relevant section). Figure 15. Soft start VCC=VCCDR VLGATEx SS_END VOUT t t t t Turn ON threshold 2048 Clock Cycles (CH1=VOUT; CH2=LGATEx; CH3=SS_END) |
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