HCPL-3120#500 Avago Technologies US Inc., HCPL-3120#500 Datasheet - Page 18
![OPTOCOUPLER 1CH 2.5A 8-SMD](/photos/15/83/158318/dual_inline_gull_wing_sml.jpg)
HCPL-3120#500
Manufacturer Part Number
HCPL-3120#500
Description
OPTOCOUPLER 1CH 2.5A 8-SMD
Manufacturer
Avago Technologies US Inc.
Datasheet
1.HCPL-3120-500E.pdf
(24 pages)
Specifications of HCPL-3120#500
Output Type
Gate Driver
Package / Case
8-SMD Gull Wing
Voltage - Isolation
3750Vrms
Number Of Channels
1, Unidirectional
Current - Output / Channel
2.5A
Propagation Delay High - Low @ If
300ns @ 7mA ~ 16mA
Current - Dc Forward (if)
25mA
Input Type
DC
Mounting Type
Surface Mount, Gull Wing
Configuration
1 Channel
Isolation Voltage
3750 Vrms
Maximum Propagation Delay Time
500 ns
Maximum Forward Diode Voltage
1.8 V
Minimum Forward Diode Voltage
1.2 V
Maximum Reverse Diode Voltage
5 V
Maximum Forward Diode Current
16 mA
Maximum Power Dissipation
295 mW
Maximum Operating Temperature
+ 100 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Applications Information
Eliminating Negative IGBT Gate Drive (Discussion applies
to HCPL-3120, HCPL-J312, and HCNW3120)
To keep the IGBT firmly off, the HCPL-3120 has a very
low maximum V
realizes this very low V
with 1 Ω (typical) on resistance in its pull down circuit.
When the HCPL-3120 is in the low state, the IGBT gate
is shorted to the emitter by Rg + 1 Ω. Minimizing Rg
and the lead inductance from the HCPL-3120 to the
IGBT gate and emitter (possibly by mounting the HCPL-
CONTROL
Figure 25. Recommended LED drive and application circuit.
18
COLLECTOR
INPUT
+5 V
74XXX
OPEN
270 Ω
OL
specification of 0.5 V . The HCPL-3120
OL
1
2
3
4
by using a DMOS transistor
HCPL-3120
HCPL-3120 fig 25
8
7
6
5
0.1 µF
3120 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 25. Care should be taken
with such a PC board design to avoid routing the IGBT
collector or emitter traces close to the HCPL-3120 input
as this can result in unwanted coupling of transient
signals into the HCPL-3120 and degrade performance. (If
the IGBT drain must be routed near the HCPL-3120 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-3120.)
+
–
V
CC
Rg
= 18 V
Q1
Q2
3-PHASE
+ HVDC
- HVDC
AC