LITE-ON TECHNOLOGY CORPORATION
Property of Lite-on Only
Part No. : LTV-3120 series (REV. 1, APR 15,2011 ) Page 1 of 18
LTV-3120
2.5A Output Current, High CMR,
Gate Drive Optocoupler
Description
The LTV-3120 optocoupler is ideally suited
for driving power IGBTs and MOSFETs
used in motor control inverter applications
and inverters in power supply system. It
contains a AlGaAs LED optically coupled to
an integrated circuit with a power output
stage. The 2.5A peak output current is
capable of directly driving most IGBTs with
ratings up to 1200 V/100 A. For IGBTs with
higher ratings, the LTV-3120 series can be
used to drive a discrete power stage which
drives the IGBT gate.
The Optocoupler operational parameters
are guaranteed over the temperature range
from -40
o
C ~ +100
o
C.
Features
• 2.5 A maximum peak output current
• 25 kV/us minimum Common Mode Rejection
(CMR) at VCM = 1500 V
• 3.8 mA maximum supply current (I
CC
)
• Under Voltage Lock-Out protection (UVLO) with
hysteresis
• Wide operating range: 15 to 30 Volts (V
CC
)
• Guaranteed performance over temperature
-40
o
C ~ +100
o
C.
• Offer low power dissipation with R
ON
1
• Fast switching speed, 500ns max propagation
delay
• Safety approval: UL, cUL, VDE (In process)
Application
• IGBT/MOSFET gate drive
• Uninterruptible power supply (UPS)
• Industrial Inverter
• Induction heating
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1&
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9FF
9R
9R
*1'
Apr 2011
Truth Table
LED
V
CC
-GND
(Turn-ON,
+ve going)
V
CC
-GND
(Turn-OFF,
-ve going)
V
O
OFF 0 - 30 V 0 - 30 V Low
ON 0 – 11.5 V 0 – 10 V Low
ON 11.5 - 13.5 V 10 - 12 V Transition
ON 13.5 - 30 V 12 - 30 V High
A 0.1ȝF bypass Capacitor must be connected
between Pin 5 and 8. (Note 8)
Functional Diagram
