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Overview

Description

The ISL71441SLH is a radiation hardened PWM input 12V half-bridge GaN FET driver that drives low rDS(ON) Gallium Nitride (GaN) FETs for DC/DC switching regulators. An integrated programmable GaN FET gate drive voltage, high-side bootstrap switch, and strong gate drive current provide a compact and robust GaN FET half-bridge driver.

The ISL71441SLH can interface directly to the ISL73847SLH dual-phase PWM buck controller to create a high-efficiency point-of-load regulator to power many of the latest low-voltage high-current FPGA and DSP digital core rails.

Features

  • Qualified to Renesas Rad Hard Plastic Production and QCI Flow (R34ZZ0006EU)
    • All screening and QCI is in accordance with SAE AS6294/1
  • Up to 20V bootstrap voltage half-bridge driver
  • Programmable 4.5V to 5.5V gate drive voltage
  • Single tri-level PWM input control
  • Separate source and sink driver outputs
  • High-side peak drive: 2A Sourcing, 4A Sinking
  • Low-side peak drive: 4A Sourcing, 8A Sinking
  • High and low-side programmable dead time control
  • Highly matched fast propagation delay: 29ns
  • Full military temperature operation: TA = -55°C to 125°C ambient range
  • 20Ld plastic 5x5mm QFN package
  • TID Rad Hard Assurance (RHA) testing
    • LDR (0.01rad(Si)/s): 75krad(Si)
  • SEE characterization
    • No DSEE with VDD = 20V, PHS = 13.5V, PVCC = 6.5V, and AVCC = 6.3V at LET = 86MeV•cm2/mg
    • SEFI <10µm2 at LET = 86MeV•cm2/mg
  • No half bridge shoot-through SET at LET = 86MeV•cm2/mg

Comparison

Applications

  • High-current DC/DC Point-of-Load (POL) for FPGA and DSP supply rails
  • 5V or 12V input to 1V output POL regulation
  • GaN FET motor driver
  • Combine with ISL73847SLH DC/DC PWM controller and Renesas GaN FETs for a complete DC/DC solution

Documentation

Type Title Date
Datasheet PDF 1.43 MB
Report PDF 5.95 MB
Report PDF 567 KB
Technical Brief PDF 229 KB
Application Note PDF 224 KB
5 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
Software & Tools - Other XLSX 306 KB
Software & Tools - Other XLSX 338 KB
Software & Tools - Other XLSX 742 KB
3 items

Boards & Kits

Models

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Diagram of ECAD Models

Product Options

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