December 2010Doc ID 17892 Rev 11/21
L6391
bootstrappedHigh-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 shut-down function ■Adjustable dead-time ■Interlocking function
■Compact and simplified layout ■Bill of material reduction ■Effective fault protection ■
Flexible, easy and fast design
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 microcontroller/DSP .
An integrated comparator is available for
protections against overcurrent, overtemperature,
etc.
Table 1.Device summary
Order codes Package Packaging L6391N DIP-14T ube L6391D SO-14T ube L6391DTR
SO-14
Tape and reel
www.st
Contents L6391
Contents
1Block diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3Truth table  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4Electrical data  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2Thermal data  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3Recommended operating conditions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5Electrical characteristics  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1AC operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2DC operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6Waveforms definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7Smart shut down function  . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . 13 8Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9Bootstrap driver  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.1CBOOT selection and charging  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 10Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 11Revision history  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21Doc ID 17892 Rev 1
L6391Block diagram
Doc ID 17892 Rev 13/21
1 Block diagram
Pin connection L6391
4/21Doc ID 17892 Rev 1
2 Pin connection
Table 2.
Pin description
Pin n #
Pin name
Type Function
1 LIN
I
Low side driver logic input (active low) 2 SD/OD (1) I/O Shut down logic input (active low)/open drain comparator output
3 HIN I High side driver logic input (active high) 4
VCC
P
Lower section supply voltage
5 DT I Dead time setting 6
NC
Not connected
7 ND P round 8 CP-I Comparator negative input 9 CP+ I Comparator positive input 10 LVG (1)1.The circuit guarantees less than 1 V on the LVG and HVG pins (@ Isink = 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; the gate driver assures low impedance also in SD condition.
O
Low side driver output 11 NC Not connected
12 OUT P High side (floating) common voltage 13 HVG (1) O High side driver output 14
BOOT
P Bootstrapped supply voltage
L6391Truth table
Doc ID 17892 Rev 15/21
3 Truth table
Note:X: don't care
Table 3.
Truth table
Input Output
SD LIN HIN LVG HVG L X X L L H H L L L H L H L L H L L H L H
H
H
L
H

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。