Rainbow-electronics MAX8720 Manual de usuario Pagina 21

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MAX8720
Dynamically Adjustable 6-Bit VID
Step-Down Controller
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HIGH VID VOLTAGE
LOW VID VOLTAGE
PGOOD
SUS
SKIP
HIGH IMPEDANCE HIGH IMPEDANCE
MODE FORCED-PWM FORCED-PWMPWM MODE PWM MODE
LOW VIDHIGH VID HIGH VIDD0-D5
PWM MODE
V
OUT
SLEW RATE SET BY R
TIME
8x R
TIME
CLOCKS
8x R
TIME
CLOCKS
Figure 8. VID Transition in Forced-PWM Mode (
SKIP
= High)
HIGH VID VOLTAGE
LOW VID VOLTAGE
PGOOD
SUS
SKIP
MODE FORCED-PWM FORCED-PWMSKIP MODE SKIP MODE
LOW VIDHIGH VID HIGH VIDD0-D5
SKIP MODE
HIGH IMPEDANCE HIGH IMPEDANCELOW T'HOLD ONLY LOW THRESHOLD ONLY
V
OUT
SLEW RATE SET BY R
TIME
8x R
TIME
CLOCKS
8x R
TIME
CLOCKS
LOW T'HOLD ONLY
Figure 9. VID Transition in Pulse-Skipping Mode (
SKIP
= GND)
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