High voltage high and low-side 4 A gate driver

The L6491 is a high voltage device manufactured with the BCD6 “OFF-LINE” technology. It is a single-chip half-bridge gate driver for N-channel power MOSFET or IGBT.

The high-side (floating) section is designed to stand a voltage rail up to 600 V. The logic inputs are CMOS/TTL compatible down to 3.3 V for easy interfacing microcontroller/DSP.

An integrated comparator is available for fast protection against overcurrent, overtemperature, etc.

Key Features

  • High voltage rail up to 600 V
  • dV/dt immunity ± 50 V/ns in full temperature range
  • Driver current capability: 4 A source/sink
  • Switching times 15 ns rise/fall with 1 nF load
  • 3.3 V, 5 V TTL/CMOS inputs with hysteresis
  • Integrated bootstrap diode
  • Comparator for fault protections
  • Smart shutdown function
  • Adjustable deadtime
  • Interlocking function
  • Compact and simplified layout
  • Bill of material reduction
  • Effective fault protection
  • Flexible, easy and fast design

Circuit Diagram

L6491 block diagram

Resources

Technical Documentation

Product Specifications
Description Version Size
DS9763 DS9763: High voltage high and low-side 4 A gate driver 1.0 838 KB
Application Notes
Description Version Size
AN4909 AN4909: Intelligent power switches for 48 V battery applications 1.0 1 MB

Publications and Collaterals

Brochures
Description Version Size
Brochure Power management guide 09.2017 3 MB

Tools and Software

Evaluation Tools
Solution Evaluation Tools
Support & Community


Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L6491D SO-14 Tube -40 125 Active 0.652 1000 NEC EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
L6491DTR SO-14 Tape And Reel -40 125 Active 0.652 1000 NEC EAR99 CHINA MORE INFO No availability reported, please contact our Sales office
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6491D ActiveSO-14IndustrialEcopack2 (**)
L6491DTR ActiveSO-14IndustrialEcopack2 (**)
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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