Overview

The ISL78424, ISL78434, and ISL78444 are Automotive Grade (AEC-Q100 Grade 1) high voltage, high frequency, half-bridge NMOS FET drivers for driving the gates of up to 70V half-bridge topologies. The family of half-bridge drivers feature 3A sourcing, 4A sinking peak gate drive current. The ISL78424 and ISL78444 feature a single tri-level PWM input for controlling both gate drivers. The ISL78434 has dual independent inputs for controlling the high-side and low-side driver separately. The ISL78424 and ISL78434 have independent sourcing and sinking pins for each gate driver and the ISL78444 has a single combined sourcing/sinking output for each gate driver. Strong gate drive strength and the Adaptive Dead Time (ADT) feature allow this family of drivers to switch high voltage, low rDS(ON) power FETs in half-bridge topologies at high operating frequencies while providing shoot-through protection and minimizing dead time switching losses. The ISL78424, ISL78434, and ISL78444 are offered in a 14 Ld HTSSOP package that complies with 100V conductor spacing per IPC-2221B. The ISL78444 is pin compatible with the ISL78420. All devices are specified across a wide ambient temperature range of -40°C to +140°C.

  • Patented gate-sensed adaptive dead time control provides shoot-through protection and minimized dead time
  • Unique tri-level PWM input for integration with Renesas multiphase controllers (for example, ISL78225 and ISL78226)
  • 3A sourcing and 4A sinking output current
  • On-chip 3Ω bootstrap FET switch
  • Programmable dead time delay with single resistor
  • Tri-level PWM input
  • Separate source/sink pins at driver outputs
  • Bootstrap and VDD Undervoltage Lockout (UVLO)
  • Wide supply range: 8V to 18V
  • Bootstrap supply maximum voltage: 100V
  • Maximum phase voltage: 86V
  • Minimum phase voltage: -10V

Documentation

= Featured Documentation
Type Title Date
Datasheet
ISL78424, ISL78434, ISL78444 Datasheet
PDF 1.63 MB
1 item

Design & Development

Software & Tools
iSim:PE Offline Simulation Tool
iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
 Simulator Renesas
1 item
ISL78424EVAL3Z Eval Board

ISL78424EVAL3Z

Evaluation
Learn More

100V 3A Source, 4A Sink Half-Bridge Drivers Evaluation Board

The ISL78424EVAL3Z evaluation board is designed to provide a quick and comprehensive method for evaluating the ISL78424 100V 3A source, 4A sink half-bridge driver for...

Featured Documents:
ISL78424EVAL3Z, ISL78434EVAL1Z User Guide

ECAD Models

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Product Options

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    ISL78424AVEZ
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    		 TSSOP-EP Reel 3 Get Samples,
    ISL78424AVEZ-T7A
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    		TSSOP-EP Reel 3 2.687 Get Samples,
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