L6398
High voltage high and low-side driver
Datasheet
-
production data
Applications
Motor driver for home appliances, factory
automation, industrial drives and fans.
Description
Features
High voltage rail up to 600 V
dV/dt immunity ± 50 V/ns in full temperature
range
Driver current capability:
– 290 mA source
– 430 mA sink
Switching times 75/35 ns rise/fall with 1 nF load
3.3 V, 5 V TTL/CMOS input comparators with
hysteresis
Integrated bootstrap diode
Fixed 320 ns deadtime
Interlocking function
Compact and simplified layout
Bill of material reduction
Flexible, easy and fast design
The L6398 is a high voltage device manufactured
with the BCD™ “offline” technology. It is a single-
chip half bridge gate driver for the 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 the
easy interfacing microcontroller/DSP.
September 2015
This is information on a product in full production.
DocID18199 Rev 4
1/16
www.st.com
Contents
L6398
Contents
1
2
3
4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1
4.2
4.3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1
5.2
AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
DC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
7
8
Waveforms definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
C
BOOT
selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
10
11
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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L6398
Block diagram
1
Block diagram
Figure 1. Block diagram
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16
Pin connection
L6398
2
Pin connection
Figure 2. Pin connection (top view)
Table 1. Pin description
Pin no.
1
2
3
4
5
6
7
8
Pin name
LIN
HIN
VCC
GND
LVG
(1)
OUT
HVG
(1)
BOOT
Type
I
I
P
P
O
P
O
P
Function
Low side-driver logic input (active low)
High-side driver logic input (active high)
Lower section supply voltage
Ground
Low-side driver output
High-side (floating) common voltage
High-side driver output
Bootstrapped supply voltage
1. The circuit guarantees less than 1 V on the LVG and HVG pins (at I
sink
= 10 mA), with V
CC
> 3 V. This
allows omitting the “bleeder” resistor connected between the gate and the source of the external MOSFET
normally used to hold the pin low.
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L6398
Truth table
3
Truth table
Table 2. Truth table
Input
LIN
H
L
L
H
HIN
L
H
L
H
LVG
L
L
H
L
Output
HVG
L
L
L
H
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