LM5109A Driver Datasheet

LM5109A Datasheet, PDF, Equivalent


Part Number

LM5109A

Description

High Voltage 1A Peak Half Bridge Gate Driver

Manufacture

etcTI

Total Page 26 Pages
Datasheet
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LM5109A
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LM5109A
SNVS412C – APRIL 2006 – REVISED SEPTEMBER 2016
LM5109A High Voltage 1A Peak Half Bridge Gate Driver
1 Features
1 Drives Both a High-Side and Low-Side N-Channel
MOSFET
• 1A peak Output Current (1.0A Sink / 1.0A Source)
• Independent TTL Compatible Inputs
• Bootstrap Supply Voltage to 108V DC
• Fast Propagation Times (30 ns Typical)
• Drives 1000 pF Load with 15ns Rise and Fall
Times
• Excellent Propagation Delay Matching (2 ns
Typical)
• Supply Rail Under-Voltage Lockout
• Low Power Consumption
• Pin Compatible with ISL6700
• Industry Standard SOIC-8 and Thermally
Enhanced WSON-8 Package
2 Applications
• Current Fed Push-Pull Converters
• Half and Full Bridge Power Converters
• Solid State Motor Drives
• Two Switch Forward Power Converters
3 Description
The LM5109A is a cost effective, high voltage gate
driver designed to drive both the high-side and the
low-side N-Channel MOSFETs in a synchronous
buck or a half bridge configuration. The floating high-
side driver is capable of working with rail voltages up
to 90V. The outputs are independently controlled with
TTL compatible input thresholds. The robust level
shift technology operates at high speed while
consuming low power and providing clean level
transitions from the control input logic to the high-side
gate driver. Under-voltage lockout is provided on both
the low-side and the high-side power rails. The
device is available in the SOIC and the thermally
enhanced WSON packages.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5109A
SOIC (8)
WSON (8)
4.90 mm × 3.91 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Application Diagram
VCC
RBoot
DBoot
VIN
VDD
HB
HO
HI LM5109 HS
LI LO
VSS
LOAD
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM5109A
LM5109A
SNVS412C – APRIL 2006 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ...................................... 3
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 4
6.6 Switching Characteristics .......................................... 5
6.7 Typical Performance Characteristics ........................ 6
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 8
7.4 Device Functional Modes.......................................... 9
8 Application and Implementation ........................ 10
8.1 Application Information............................................ 10
8.2 Typical Application ................................................. 11
9 Power Supply Recommendations...................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 16
11 Device and Documentation Support ................. 17
11.1 Documentation Support ........................................ 17
11.2 Receiving Notification of Documentation Updates 17
11.3 Community Resource............................................ 17
11.4 Trademarks ........................................................... 17
11.5 Electrostatic Discharge Caution ............................ 17
11.6 Glossary ................................................................ 17
12 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (March 2016) to Revision C
Page
• Updated values in the Thermal Information table to align with JEDEC standards................................................................. 4
• Added Overview section. ........................................................................................................................................................ 8
• Added Feature Description section. ....................................................................................................................................... 8
• Added Device Functional Modes section. .............................................................................................................................. 9
• Added Typical Application section........................................................................................................................................ 11
• Added Power Supply Recommendations section. .............................................................................................................. 15
Changes from Revision A (March 2013) to Revision B
Page
• Added Device Information table, ESD Ratings, Pin Configuration and Functions section, Detailed Description
section, Application and Implementation section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1
Changes from Original (March 2013) to Revision A
Page
• Changed layout of National Semiconductor Data Sheet to TI format .................................................................................. 10
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Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5109A SNVS412C – APRIL 2 006 – REVISED SEPTEMBER 2016 LM5109A High Voltage 1A Peak Half Bridge Gate D river 1 Features •1 Drives Both a Hi gh-Side and Low-Side N-Channel MOSFET 1A peak Output Current (1.0A Sink / 1.0A Source) • Independent TTL Compat ible Inputs • Bootstrap Supply Voltag e to 108V DC • Fast Propagation Times (30 ns Typical) • Drives 1000 pF Loa d with 15ns Rise and Fall Times • Exc ellent Propagation Delay Matching (2 ns Typical) • Supply Rail Under-Voltage Lockout • Low Power Consumption • Pin Compatible with ISL6700 • Industr y Standard SOIC-8 and Thermally Enhance d WSON-8 Package 2 Applications • Cur rent Fed Push-Pull Converters • Half and Full Bridge Power Converters • So lid State Motor Drives • Two Switch F orward Power Converters 3 Description The LM5109A is a cost effective, high v oltage gate driver designed to drive both the high-side and the low-side N-Channel MOSFETs in a s.
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