16
HCPL-4506
1
2
8
7
V
CC1
0.1 µF
20 kΩ
IPM
I
LED1
20 kΩ
+5 V
+HV
V
310 Ω
CMOS
OUT1
3
4
6
5
Q1
Q2
M
SHIELD
HCPL-4506
HCPL-4506
1
2
8
7
V
CC2
-HV
0.1 µF
20 kΩ
HCPL-4506
HCPL-4506
HCPL-4506
HCPL-4506
I
LED2
20 kΩ
+5 V
310 Ω
CMOS
V
OUT2
3
4
6
5
SHIELD
Figure 24. Typical Application Circuit.
I
LED1
Q1 OFF
Q2 ON
Q1 ON
Q2 OFF
V
V
OUT1
OUT2
I
LED1
I
LED2
t
PLH
MIN.
Q1 OFF
Q2 ON
t
Q1 ON
PLH
V
V
OUT1
OUT2
MAX.
Q2 OFF
t
PHL
PDD*
MAX.
MIN.
t
PHL
MAX.
I
LED2
MAX.
DEAD TIME
t
PLH MAX.
t
MAXIMUM DEAD TIME (DUE TO OPTOCOUPLER)
PHL
MIN.
= (t
= (t
t
t
) + (t
) - (t
t
)
PHL MIN.
PLH MAX.
-
-
PLH MIN.
PHL MAX.
-
t
)
PLH MAX.
PHL MIN.
PLH MIN.
-
PHL MAX.
PDD* MAX. =
(t
= PDD* MAX. - PDD* MIN.
t
)
t
t
PLH- PHL MAX. = PLH MAX. - PHL MIN.
*PDD = PROPAGATION DELAY DIFFERENCE
*PDD = PROPAGATION DELAY DIFFERENCE
NOTE: THE PROPAGATION DELAYS USED TO CALCULATE
PDD ARE TAKEN AT EQUAL TEMPERATURES.
NOTE: THE PROPAGATION DELAYS USED TO CALCULATE THE MAXIMUM
DEAD TIME ARE TAKEN AT EQUAL TEMPERATURES.
Figure 25. Minimum LED Skew for Zero Dead Time.
Figure 26. Waveforms for Dead Time Calculation.
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