LM5109B Driver Datasheet

LM5109B Datasheet, PDF, Equivalent


Part Number

LM5109B

Description

High Voltage 1A Peak Half Bridge Gate Driver

Manufacture

etcTI

Total Page 26 Pages
Datasheet
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LM5109B
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LM5109B
SNVS477C – FEBRUARY 2007 – REVISED JANUARY 2016
LM5109B High Voltage 1-A Peak Half-Bridge Gate Driver
1 Features
1 Drives Both a High-Side and Low-Side N-Channel
MOSFET
• 1-A Peak Output Current (1.0-A Sink and 1.0-A
Source)
• Inputs Compatible With Independent TTL and
CMOS
• Bootstrap Supply Voltage to 108-V DC
• Fast Propagation Times (30 ns Typical)
• Drives 1000-pF Load With 15-ns Rise and Fall
Times
• Excellent Propagation Delay Matching (2 ns
Typical)
• Supply Rail Undervoltage Lockout
• Low Power Consumption
• 8-Pin SOIC and Thermally-Enhanced 8-Pin
WSON 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 LM5109B device 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 90 V. The outputs are independently
controlled with cost-effective TTL and
CMOS-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. Undervoltage lockout is provided on both
the low-side and the high-side power rails. The
device is available in the 8-pin SOIC and thermally-
enhanced 8-pin WSON packages.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5109B
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 data sheet.
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.

LM5109B
LM5109B
SNVS477C – FEBRUARY 2007 – REVISED JANUARY 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......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Switching Characteristics .......................................... 6
6.7 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 10
7.5 HS Transient Voltages Below Ground .................... 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
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 Community Resources.......................................... 17
11.3 Trademarks ........................................................... 17
11.4 Electrostatic Discharge Caution ............................ 17
11.5 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 2013) to Revision C
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
Changes from Revision A (March 2013) to Revision B
Page
• Changed layout of National Data Sheet to TI format ............................................................................................................. 1
2 Submit Documentation Feedback
Product Folder Links: LM5109B
Copyright © 2007–2016, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5109B SNVS477C – FEBRUAR Y 2007 – REVISED JANUARY 2016 LM5109B High Voltage 1-A Peak Half-Bridge Gate Driver 1 Features •1 Drives Both a High-Side and Low-Side N-Channel MOSFET • 1-A Peak Output Current (1.0-A Sin k and 1.0-A Source) • Inputs Compatib le With Independent TTL and CMOS • Bo otstrap Supply Voltage to 108-V DC • Fast Propagation Times (30 ns Typical) • Drives 1000-pF Load With 15-ns Rise and Fall Times • Excellent Propagati on Delay Matching (2 ns Typical) • Su pply Rail Undervoltage Lockout • Low Power Consumption • 8-Pin SOIC and Th ermally-Enhanced 8-Pin WSON Package 2 A pplications • Current-Fed, Push-Pull Converters • Half- and Full-Bridge Po wer Converters • Solid-State Motor Dr ives • Two-Switch Forward Power Conve rters 3 Description The LM5109B device is a cost-effective, high-voltage gate driver designed to drive both the high-side and the low-side N-channel MOSFETs in a synchronou.
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