Document
L6391
High voltage high and low-side driver
Features
High voltage rail up to 600 V dV/dt immunity ± 50 V/nsec in full temperature
range Driver current capability:
– 290 mA source – 430 mA sink Switching times 75/35 nsec 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 units
Description
The L6391 is a high voltage device manufactured with the BCD™ “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 the microcontroller/DSP.
An integrated comparator is available for protections against overcurrent, overtemperature, etc.
September 2015
This is information on a product in full production.
DocID17892 Rev 3
1/23
www.st.com
Contents
Contents
L6391
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
Waveform definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7
Smart shutdown function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8
Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9
Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CBOOT selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SO-14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2/23
DocID17892 Rev 3
L6391
1
Block diagram
Figure 1. Block diagram
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Block diagram
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DocID17892 Rev 3
3/23
23
Pin connection
2
Pin connection
L6391
Figure 2. Pin connection (top view)
EDGE DEADTIME
/,1
LIN
6'2'
HIN
+,1
LVG
9&&
'7
HVG
1&
gate driver outputs OFF
(HALF-BRIDGE TRI-STAT*E1) '
DTLH
INTERLOCKING INTERLOCKING
%227
+9*
287
1&
/9*
&3
gate driver outputs OFF
(HALF-&BR3ID GE TRI-STATE)
DTHL $0Y
Table 1. Pin description
Pin number
Pin name
Type
Function
1
LIN
2
SD/OD (1)
3
HIN
4
VCC
5
DT
6
NC
7
GND
8
CP-
9
CP+
10
LVG(1)
11
NC
12
OUT
13
HVG(1)
14
BOOT
I
Low-side driver logic input (active low)
I/O
Shutdown logic input (active low)/open-drain comparator output
I
High-side driver logic input (active high)
P
Lower section supply voltage
I
Deadtime setting
Not connected
P
Ground
I
Comparator negative input
I
Comparator positive input
O
Low-side driver output
Not connected
P
High-side (floating) common voltage
O
High-side driver output
P
Bootstrapped supply voltage
1.
The circuit guarantees less than 1 V allows omitting the “bleeder” resistor
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