Datasheet > SLVA343A

SLVA343A

更新时间： 2024-11-18 06:11:59

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
8页	374K
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Medium Integrated Power Solution Using a Dual DC/DC Converter and an LDO

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Application Report

SLVA343A–June 2009–Revised May 2010

Medium Integrated Power Solution Using a Dual DC/DC

Converter and an LDO

Ambreesh Tripathi .......................................................................... PMP - DC/DC Low-Power Converters

ABSTRACT

This reference design is intended for users designing with the TMS320C6742, TMS320C6746,

TMS320C6748, or OMAP-L138 processor. Using sequenced power supplies, this reference design

describes a system having a 3.3-V input voltage and a high-efficiency dc/dc converter with integrated

FETs for a small, simple design.

Sequenced power supply architectures are becoming commonplace in high-performance microprocessor

and digital signal processor (DSP) systems. To save power and increase processing speeds, processor

cores have smaller geometry cells and require lower supply voltages than the system bus voltages. Power

management in these systems requires special attention. This application report addresses these topics

and suggests solutions for output voltage sequencing.

Contents

Introduction .................................................................................................................. 2

Power Requirements ....................................................................................................... 2

Features ...................................................................................................................... 3

Bill of Materials .............................................................................................................. 6

List of Figures

PMP4978 Reference Design Schematic.................................................................................

Optional Circuit for DVDD_A, DVDD_B and DVDD_C.................................................................

Sequencing in Start-up Waveform........................................................................................

Efficiency V_OUT2= 1.8 V.....................................................................................................

Efficiency V_OUT1= 1.1 V.....................................................................................................

List of Tables

Power Requirements .......................................................................................................

PMP4978 Bill of Materials .................................................................................................

EasyScale is a trademark of Texas Instruments.

SLVA343A–June 2009–Revised May 2010

Medium Integrated Power Solution Using a Dual DC/DC Converter and an LDO

12 3 4 5 6 7 8

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