HCPL0314000E AVAGO TECH, HCPL0314000E Datasheet - Page 11
HCPL0314000E
Manufacturer Part Number
HCPL0314000E
Description
Manufacturer
AVAGO TECH
Datasheet
1.HCPL0314000E.pdf
(16 pages)
CONTROL
Applications Information
Eliminating Negative IGBT Gate
Drive
To keep the IGBT firmly off,
the HCPL-3140/HCPL-0314 has a
very low maximum V
specification of 1.0 V. Minimizing
Rg and the lead inductance from
the HCPL-3140/HCPL-0314 to
the IGBT gate and emitter
(possibly by mounting the
Figure 19. Recommended LED Drive and Application Circuit for HCPL-3140/HCPL-0314.
11
COLLECTOR
INPUT
+5 V
74XXX
OPEN
270 Ω
OL
1
2
3
4
HCPL-3140/HCPL-0314
HCPL-3140/HCPL-0314 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
HCPL-3140/HCPL-0314 input as
this can result in unwanted
8
7
6
5
0.1 µF
+
–
V
CC
Rg
= 15 V
Q1
Q2
coupling of transient signals into
the input of HCPL-3140/
HCPL-0314 and degrade
performance. (If the IGBT
drain must be routed near the
HCPL-3140/HCPL-0314 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 HCPL-3140/
HCPL-0314.)
3-PHASE
+ HVDC
- HVDC
AC