ACPL-P456 and ACPL-W456
Figure 22 Minimum LED Skew for Zero Dead Time
ILED1
VOUT1
VOUT2
Q1 ON
Q2 OFF
Q1 OFF
Q2 ON
ILED2
tPLH MAX.
tPHL
MIN.
PDD* MAX. =
(tPLH-tPHL) MAX. = tPLH MAX. - tPHL MIN.
*PDD = PROPAGATION DELAY DIFFERENCE
NOTE: THE PROPAGATION DELAYS USED TO CALCULATE
PDD ARE TAKEN AT EQUAL TEMPERATURES.
Data Sheet
Figure 23 Waveforms for Deadtime Calculation
ILED1
VOUT1
VOUT2
Q1 ON
Q2 OFF
Q1 OFF
Q2 ON
ILED2
tPLH
MIN.
tPLH
MAX.
PDD*
MAX.
tPHL
MIN.
tPHL
MAX.
MAX.
DEAD TIME
MAXIMUM DEAD TIME (DUE TO OPTOCOUPLER)
= (tPLH MAX. - tPLH MIN.) + (tPHL MAX. - tPHL MIN.)
= (tPLH MAX. - tPHL MIN.) - (tPLH MIN. - tPHL MAX.)
= PDD* MAX. - PDD* MIN.
*PDD = PROPAGATION DELAY DIFFERENCE
NOTE: THE PROPAGATION DELAYS USED TO CALCULATE THE MAXIMUM
DEAD TIME ARE TAKEN AT EQUAL TEMPERATURES.
Broadcom
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