LM5104 Gate Driver Datasheet

LM5104 Datasheet, PDF, Equivalent


Part Number

LM5104

Description

High-Voltage Half-Bridge Gate Driver

Manufacture

etcTI

Total Page 25 Pages
Datasheet
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LM5104
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LM5104
SNVS269D – JANUARY 2004 – REVISED DECEMBER 2014
LM5104 High-Voltage Half-Bridge Gate Driver With Adaptive Delay
1 Features
1 Drives Both a High-Side and Low-Side N-Channel
MOSFET
• Adaptive Rising and Falling Edges With
Programmable Additional Delay
• Single Input Control
• Bootstrap Supply Voltage Range up to 118-V DC
• Fast Turnoff Propagation Delay (25 ns Typical)
• Drives 1000-pF Loads With 15-ns Rise and Fall
Times
• Supply Rail Undervoltage Lockout
• SOIC and WSON-10 4-mm × 4-mm Package
2 Applications
• Current Fed Push-Pull Power Converters
• High Voltage Buck Regulators
• Active Clamp Forward Power Converters
• Half-Bridge and Full-Bridge Converters
3 Description
The LM5104 High-Voltage Gate Driver is designed to
drive both the high-side and the low-side N-channel
MOSFETs in a synchronous buck configuration. The
floating high-side driver can work with supply voltages
up to 100 V. The high-side and low-side gate drivers
are controlled from a single input. Each change in
state is controlled in an adaptive manner to prevent
shoot-through issues. In addition to the adaptive
transition timing, an additional delay time can be
added, proportional to an external setting resistor. An
integrated high-voltage diode is provided to charge
high-side gate drive bootstrap capacitor. A robust
level shifter operates at high speed while consuming
low power and providing clean level transitions from
the control logic to the high-side gate driver.
Undervoltage lockout is provided on both the low-side
and the high-side power rails. This device is available
in the standard SOIC and the WSON packages.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
LM5104
SOIC (8)
WSON (10)
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 Block Diagram
HV
UVLO
LEVEL
SHIFT
DRIVER
HO
HS
IN
RT
VDD
UVLO
VSS
DRIVER
LO
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.

LM5104
LM5104
SNVS269D – JANUARY 2004 – REVISED DECEMBER 2014
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 .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Switching Characteristics .......................................... 6
6.7 Typical Characteristics .............................................. 6
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
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Application ................................................. 11
9 Power Supply Recommendations...................... 14
9.1 Power Dissipation Considerations .......................... 14
10 Layout................................................................... 15
10.1 Layout Guidelines ................................................. 15
10.2 Layout Example .................................................... 16
11 Device and Documentation Support ................. 16
11.1 Trademarks ........................................................... 16
11.2 Electrostatic Discharge Caution ............................ 16
11.3 Glossary ................................................................ 16
12 Mechanical, Packaging, and Orderable
Information ........................................................... 16
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (March 2013) to Revision D
Page
• Added Pin Configuration and Functions section, 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 B (March 2013) to Revision C
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 11
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Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5104 SNVS269D – JANUARY 2004 – REVISED DECEMBER 2014 LM5104 H igh-Voltage Half-Bridge Gate Driver Wit h Adaptive Delay 1 Features •1 Drive s Both a High-Side and Low-Side N-Chann el MOSFET • Adaptive Rising and Falli ng Edges With Programmable Additional D elay • Single Input Control • Boots trap Supply Voltage Range up to 118-V D C • Fast Turnoff Propagation Delay (2 5 ns Typical) • Drives 1000-pF Loads With 15-ns Rise and Fall Times • Supp ly Rail Undervoltage Lockout • SOIC a nd WSON-10 4-mm × 4-mm Package 2 Appli cations • Current Fed Push-Pull Power Converters • High Voltage Buck Regul ators • Active Clamp Forward Power Co nverters • Half-Bridge and Full-Bridg e Converters 3 Description The LM5104 High-Voltage Gate Driver is designed to drive both the high-side and the low-s ide N-channel MOSFETs in a synchronous buck configuration. The floating high-side driver can work with supply voltages up to 100 V..
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