ACPL-W341-500E Avago Technologies US Inc., ACPL-W341-500E Datasheet - Page 15

• Manufacturer Part Number: ACPL-W341-500E
• Description: Gate Drive Optocoupler, T/R+LF
• Manufacturer: Avago Technologies US Inc.

Specifications of ACPL-W341-500E

• No. Of Channels: 1
• Optocoupler Output Type: Gate Drive
• Input Current: 16mA
• Opto Case Style: SOIC
• No. Of Pins: 6
• Leaded Process Compatible: Yes
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Details

Rail-to-Rail Output
Figure 23 shows a typical gate driver’s high current output
stage with 3 bipolar transistors in darlington confi guration.
During the output high transition, the output voltage rises
rapidly to within 3 diode drops of V
is at V
level of V
to account for the diode drops. And to limit the output
voltage to V
the output and V
while the output is high.
CATHODE
Figure 23. Typical gate driver with output stage in darlington confi guration
CATHODE
Figure 24. ACPL-P341/W341 with PMOS and NMOS output stage for rail-to-rail output voltage
15
ANODE
ANODE
NC
NC
NC
CC
in order to achieve IGBT rated V
CC
1
2
3
4
1
2
3
will be need to be raised to beyond V
CC
, a pull-down resistor, R
EE
is recommended to sink a static current
CC
. To ensure the V
PULL-DOWN
CE(ON)
6
5
4
V
V
V
voltage. The
CC
8
7
6
5
EE
OUT
CC
between
V
V
V
CC
OUT
EE
+3(V
OUT
BE
R
)
PULL-DOWN
R
G
ACPL-P341 uses a power PMOS to deliver the large current
and pull it to V
as shown in Figure 24. This ensures that the IGBT’s gate
voltage is driven to the optimum intended level with no
power loss across IGBT even when an unstable power
supply is used.
CC
to achieve rail-to-rail output voltage