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  • 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

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Technical Documentation

    • Description Version Size Action
      DS9763
      High voltage high and low-side 4 A gate driver
      1.0
      838.68 KB
      PDF
      DS9763

      High voltage high and low-side 4 A gate driver

    • Description Version Size Action
      AN4909
      Intelligent power switches for 48 V battery applications
      1.0
      1.07 MB
      PDF
      AN4909

      Intelligent power switches for 48 V battery applications

Publications and Collaterals

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
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      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6491D
Active
SO-14 Industrial Ecopack2
L6491DTR
Active
SO-14 Industrial Ecopack2

L6491D

Package:

SO-14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-14

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6491DTR

Package:

SO-14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-14

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L6491D Available at 5 distributors

Distributor availability ofL6491D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1176 1 Order Now
RS COMPONENTS EUROPE 720 1 Order Now
Newark Element14 AMERICA 13 0 Order Now
MOUSER WORLDWIDE 1140 1 Order Now
Farnell Element14 EUROPE 717 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

1176

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

720

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

13

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1140

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

717

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

Buy now
Active
EAR99 NEC Tube SO-14 -40 125 MOROCCO 0.8676 / 1k
L6491DTR Available at 5 distributors

Distributor availability ofL6491DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1915 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 3752 1 Order Now
Farnell Element14 EUROPE 2360 1 Order Now
RUTRONIK EUROPE 390 2500 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

1915

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3752

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2360

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

390

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel SO-14 -40 125 MOROCCO 0.8676 / 1k

L6491D

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8676 / 1k

Distributor availability ofL6491D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1176 1 Order Now
RS COMPONENTS EUROPE 720 1 Order Now
Newark Element14 AMERICA 13 0 Order Now
MOUSER WORLDWIDE 1140 1 Order Now
Farnell Element14 EUROPE 717 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

1176

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

720

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

13

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1140

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

717

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-14

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.8676 / 1k

Country of Origin

MOROCCO

L6491DTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8676 / 1k

Distributor availability ofL6491DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1915 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 3752 1 Order Now
Farnell Element14 EUROPE 2360 1 Order Now
RUTRONIK EUROPE 390 2500 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

1915

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3752

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2360

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

390

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-14

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.8676 / 1k

Country of Origin

MOROCCO

(*) 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