Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- CONTENTS
- DESCRIPTION
- DEVICE RATINGS
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTROSTATIC DISCHARGE (ESD) PROTECTION
- PACKAGE DISSIPATION RATINGS
- ELECTRICAL CHARACTERISTICS
- TYPICAL CHARACTERISTICS
- DEVICE INFORMATION
- BLOCK DIAGRAM
- APPLICATION INFORMATION
- FUNCTIONAL DESCRIPTION
- Voltage Reference
- Oscillator
- Input Undervoltage Lockout (UVLO) and Startup
- Enable and Timed Turn On of the Outputs
- Output Voltage Sequencing
- Soft Start
- Output Voltage Regulation
- Feedback Loop and Inductor-Capacitor (L-C) Filter Selection
- Inductor-Capacitor (L-C) Selection
- Maximum Output Capacitance
- Minimum Output Capacitance
- Modifying The Feedback Loop
- Example: TPS54386 Buck Converter Operating at 12-V Input, 3.3-V Output and 400-mA(P-P) Ripple Current
- Bootstrap for the N-Channel MOSFET
- Light Load Operation
- SW Node Ringing
- Output Overload Protection
- Operating Near Maximum Duty Cycle
- Dual Supply Operation
- Cascading Supply Operation
- Multiphase Operation
- Bypass and FIltering
- Over-Temperature Protection and Junction Temperature Rise
- Power Derating
- PowerPAD Package
- PCB Layout Guidelines
- FUNCTIONAL DESCRIPTION
- DESIGN EXAMPLES
- ADDITIONAL REFERENCES
www.ti.com
ADDITIONAL REFERENCES
Related Devices
References
Package Outline and Recommended PCB Footprint
TPS54383 , , TPS54386
SLUS774B – AUGUST 2007 – REVISED OCTOBER 2007
The following parts have characteristics similar to the TPS54383/6 and may be of interest.
Table 5. Devices Related to the TPS54383 and TPS54386
TI LITERATURE
DEVICE DESCRIPTION
NUMBER
SLUS642 TPS40222 5-V Input, 1.6-A Non-Synchronous Buck Converter
TPS54283 /
SLUS749 2-A Dual Non-Synchronous Converter with Integrated High-Side MOSFET
TPS54286
These references, design tools and links to additional references, including design software, may be found at
http:www.power.ti.com
Table 6. References
TI LITERATURE
DESCRIPTION
NUMBER
SLMA002 PowerPAD Thermally Enhanced Package Application Report
SLMA004 PowerPAD™ Made Easy
SLUP206 Under The Hood Of Low Voltage DC/DC Converters. SEM1500 Topic 5, 2002 Seminar Series
SLVA057 Understanding Buck Power Stages in Switchmode Power Supplies
SLUP173 Designing Stable Control Loops. SEM 1400, 2001 Seminar Series
The following pages outline the mechanical dimensions of the 14-Pin PWP package and provide
recommendations for PCB layout.
Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 45
Product Folder Link(s): TPS54383 TPS54386