Datasheet > HA3808-AL

HA3808-AL

更新时间： 2024-02-16 14:51:58

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
9页	245K
描述
High-Vin, High-Efficiency Power Solution Using DC/DC Converter With DVFS

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HA3808-AL 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8504.50.80.00
风险等级：	5.69	直流电阻：	109 Ω
标称电感 (L)：	6.8 µH	电感器应用：	POWER INDUCTOR
电感器类型：	GENERAL PURPOSE INDUCTOR	JESD-609代码：	e3
功能数量：	1	端子数量：	2
最高工作温度：	125 °C	最低工作温度：	-40 °C
自谐振频率：	15 MHz	形状/尺寸说明：	RECTANGULAR PACKAGE
屏蔽：	YES	表面贴装：	YES
端子面层：	Matte Tin (Sn) - with Nickel (Ni) barrier	端子位置：	DUAL ENDED
端子形状：	WRAPAROUND	测试频率：	0.1 MHz
容差：	20%	Base Number Matches：	1

HA3808-AL 数据手册

Application Report

SLVA339A–June 2009–Revised May 2010

High-Vin, High-Efficiency Power Solution Using DC/DC

Converter With DVFS

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 12-V input voltage and a high-efficiency dc/dc converter with integrated FETs

and dynamic voltage and frequency scaling (DVFS) 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

PMP4976 Reference Design Schematic.................................................................................

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

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

Efficiency vs Output Current...............................................................................................

List of Tables

General Requirements .....................................................................................................

PMP4976 Bill of Materials .................................................................................................

SLVA339A–June 2009–Revised May 2010

High-Vin, High-Efficiency Power Solution Using DC/DC Converters With DVFS

12 3 4 5 6 7...9

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