Features

• Built using the advantages and compatibility

• Latch Up Protected

• 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

• Low Output Impedance

• Low Supply Current

Applications

• Driving MOSFETs and IGBTs

• Limiting di/dt under Short Circuit

• Motor Controls

• Line Drivers

• Pulse Generators

• Local Power ON/OFF Switch

• Switch Mode Power Supplies (SMPS)

• DC to DC Converters

• Pulse Transformer Driver

• Class D Switching Amplifiers

First Release

Copyright © IXYS CORPORATION 2001 Patent Pending

General Description

The IXDD408 is a high speed high current gate driver

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

make the IXDD408 unmatched in performance and value.

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

and achieves a Soft Turn-Off of the MOSFET/IGBT when

a short circuit is detected. This helps prevent damage

that could occur to the MOSFET/IGBT if it were to be

switched off abruptly due to a dv/dt over-voltage tran-

sient.

The IXDD408 is available in the standard 8-pin P-DIP (PI),

SOP-8 (SI), 5-pin TO-220 (CI) and in the TO-263 (YI)

surface-mount package.

Figure 1 - Functional Diagram

IXDD408PI / 408SI / 408YI / 408CI

8 Amp Low-Side Ultrafast MOSFET Driver