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.

Features

  • Patented gate-sensed adaptive dead time control provides shoot-through protection and mimized 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 bootsrap 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

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TSSOP-EP Tube 960
Availability
Active TSSOP-EP Reel 2500
Availability
Active TSSOP-EP Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL78424, ISL78434, ISL78444 Datasheet Datasheet PDF 1.63 MB
User Guides & Manuals
ISL78424EVAL3Z, ISL78434EVAL1Z User Guide Manual PDF 1.82 MB
Downloads
ISL78424EVAL3Z Design Files Design File ZIP 907 KB

Boards & Kits

Part Number Title Type Company
ISL78424EVAL3Z 100V 3A Source, 4A Sink Half-Bridge Drivers Evaluation Board Evaluation Renesas
ISL78434EVAL1Z 100V 3A Source, 4A Sink Half-Bridge Drivers Evaluation Board Evaluation Renesas
ISL78444EVAL1Z 100V 3A Source, 4A Sink Half-Bridge Drivers Evaluation Board Evaluation Renesas