IXDD408PI / 408SI / 408YI / 408CI
8 Amp Low-Side Ultrafast MOSFET Driver
General Description
Features
• Built using the advantages and compatibility
of CMOS and IXYS HDMOSTM processes.
• Latch Up Protected
TheIXDD408isahighspeedhighcurrentgatedriver
specifically designed to drive the largest MOSFETs and
IGBTs to their minimum switching time and maximum
practical frequency limits. The IXDD480 can source and
sink 8A of peak current while producing voltage rise and
fall times of less than 30ns. The input of the driver is
compatible with TTL or CMOS and is fully immune to
latch up over the entire operating range. Designed with
small internal delays, cross conduction/current shoot-
through is virtually eliminated in the IXDD408. Its features
and wide safety margin in operating voltage and power
maketheIXDD408unmatchedinperformanceandvalue.
• High Peak Output Current: 8A Peak
• Operates from 4.5V to 25V
• Ability to Disable Output under Faults
• High Capacitive Load
Drive Capability: 2500pF in <15ns
• Matched Rise And Fall Times
• Low Propagation Delay Time
• LowOutputImpedance
• LowSupplyCurrent
Applications
The IXDD408 incorporates a unique ability to disable the
output under fault conditions. When a logical low is
forced into the Enable input, both final output stage
MOSFETs (NMOS and PMOS) are turned off. As a
result, the output of the IXDD408 enters a tristate mode
andachievesaSoftTurn-OffoftheMOSFET/IGBTwhen
a short circuit is detected. This helps prevent damage
that could occur to the MOSFET/IGBT if it were to be
switchedoffabruptlyduetoadv/dtover-voltagetran-
sient.
• DrivingMOSFETsandIGBTs
• Limiting di/dt under Short Circuit
• MotorControls
• LineDrivers
• PulseGenerators
• Local Power ON/OFF Switch
• Switch Mode Power Supplies (SMPS)
• DCtoDCConverters
• PulseTransformerDriver
• Class D Switching Amplifiers
TheIXDD408isavailableinthestandard8-pinP-DIP(PI),
SOP-8 (SI), 5-pin TO-220 (CI) and in the TO-263 (YI)
surface-mountpackage.
Figure 1 - Functional Diagram
Copyright © IXYS CORPORATION 2001 Patent Pending
First Release