ACPL-P314-560E Avago Technologies US Inc., ACPL-P314-560E Datasheet - Page 11

• Manufacturer Part Number: ACPL-P314-560E
• Description: Gate Drive Optocoupler, T/R+VDE+LF
• Manufacturer: Avago Technologies US Inc.

Specifications of ACPL-P314-560E

• Voltage - Isolation: 3750Vrms
• Number Of Channels: 1, Unidirectional
• Current - Output / Channel: 600mA
• Propagation Delay High - Low @ If: 300ns @ 8mA
• Current - Dc Forward (if): 25mA
• Input Type: DC
• Output Type: Push-Pull, Totem-Pole
• Mounting Type: Surface Mount
• Package / Case: SO-6
• Number Of Elements: 1
• Forward Voltage: 1.8V
• Forward Current: 25mA
• Isolation Voltage: 3750Vrms
• Package Type: PDIP
• Operating Temp Range: -40C to 100C
• Power Dissipation: 250mW
• Propagation Delay Time: 700ns
• Pin Count: 6
• Mounting: Surface Mount
• Reverse Breakdown Voltage: 5V
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Applications Information
Eliminating Negative IGBT Gate Drive
To keep the IGBT firmly off, the ACPL-P314/W314 has a
very low maximum V
R
to the IGBT gate and emitter (possibly by mounting the
ACPL-P314/W314 on a small PC board directly above the
IGBT) can eliminate the need for negative IGBT gate drive
in many applications as shown in Figure 19. Care should
be taken with such a PC board design to avoid routing
the IGBT collector or emitter traces close to the ACPL-
P314/W314 input as this can result in unwanted coupling
of transient signals into the input of ACPL-P314/W314
and degrade performance. (If the IGBT drain must be
routed near the ACPL-P314/W314 input, then the LED
should be reverse biased when in the off state, to prevent
the transient signals coupled from the IGBT drain from
turning on the ACPL-P314/W314.
Selecting the Gate Resistor (Rg)
Step 1: Calculate R
cation. The IGBT and R
a simple RC circuit with a voltage supplied by the ACPL-
P314/W314.
The V
the peak current of 0.6A. (See Figure 6).
Figure 19. Recommended LED Drive and Application Circuit for ACPL-P314/W314
11
CONTROL
g
R
and the lead inductance from the ACPL-P314/W314
INPUT
g
OL
COLLECTOR
³
+5 V
=
=
V
value of 5 V in the previous equation is the V
CC
74XXX
I
OPEN
32
24 5
OLPEAK
0.6
V
OL
g
270
minimum from the I
OL
g
1
1
2
3
specification of 1.0 V. Minimizing
in Figure 19 can be analyzed as
ACPL-P314/W314
OL
peak specifi-
OL
0.1 F
6
5
4
at
Step 2: Check the ACPL-P314/W314 power dissipation
and increase R
power dissipation (P
power (P
where K
and K
circuit in Figure 19 with I
:, Max Duty Cycle = 80%, Q
T
The value of 3 mA for I
max. I
Since P
alright for the power dissipation.
Figure 20. Energy Dissipated in the ACPL-P314/W314 and for Each IGBT
Switching Cycle.
AMAX
P
P
P
P
P
+
+
-
-
T
E
O
E
O
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
V
= 10 mA 1.8V 0.8 = 14 mW
= P
= I
= (3 mA + (0.001 mA/nC kHz) 20 kHz 100 nC) 24V +
0
CC
= P
= (I
CC
ICC
= 85°C:
0
0.4 J 20 kHz = 128 mW £ 250 mW ( P
= 24V
F
O
E
O(BIAS)
ICC
CCBIAS
over entire operating temperature range.
E
R
+
for this case is less than P
) and the output power (P
is a constant of 0.001 mA/(nC*kHz). For the
V
g
Rg – GATE RESISTANCE –
P
F
· Q
O
20
+
+
Q1
Q2
DutyCycle
g
P
g
K
O(SWITCHING)
ICC
· f is the increase in I
if necessary. The ACPL-P314/W314 total
40
Q
T
) is equal to the sum of the emitter
g
CC
f
=
F
)
in the previous equation is the
I
(worst case) = 10 mA, R
60
CC
V
Qg = 50 nC
Qg = 100 nC
Qg = 200 nC
Qg = 400 nC
CC
g
+
V
= 100 nC, f = 20 kHz and
CC
E
80
SW
+
O
E
(R
O(MAX)
CC
SW
).
3-PHASE
O(MAX)
g
+ HVD
- HVDC
100
AC
Q ;
due to switching
(R
g
g
@85 C)
Q ;
, R
) f
g
g
) f
= 32 : is
g
= 32