Rainbow Electronics MAX8720 - Manual (Page 21)

MAX8720
Dynamically Adjustable 6-Bit VID
Step-Down Controller
______________________________________________________________________________________ 21
HIGH VID VOLTAGE
LOW VID VOLTAGE
PGOOD
SUS
SKIP
HIGH IMPEDANCE HIGH IMPEDANCE
MODE FORCED-PWM FORCED-PWM PWM MODE PWM MODE
LOW VID HIGH VID HIGH VID D0-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-PWM SKIP MODE SKIP MODE
LOW VID HIGH VID HIGH VID D0-D5
SKIP MODE
HIGH IMPEDANCE HIGH IMPEDANCE LOW 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)