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L6491 Datasheet

High voltage high and low-side 4A gate driver

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L6491
High voltage high and low-side 4 A gate driver
SO-14
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
Datasheet - production data
Applications
Motor driver for home appliances, factory
automation, industrial drives and fans
HID ballasts
Power supply unit
Induction heating
Wireless chargers
Industrial inverters
UPS
Description
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.
Table 1. Device summary
Order code
Package
Packaging
L6491D
L6491DTR
SO-14
SO-14
Tube
Tape and reel
March 2015
This is information on a product in full production.
DocID024832 Rev 1
1/24
www.st.com


STMicroelectronics Electronic Components Datasheet

L6491 Datasheet

High voltage high and low-side 4A gate driver

No Preview Available !

Contents
Contents
L6491
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 DC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6 Waveform definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Smart shutdown function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9 Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
CBOOT selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2/24 DocID024832 Rev 1


Part Number L6491
Description High voltage high and low-side 4A gate driver
Maker STMicroelectronics
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L6491 Datasheet PDF






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