欢迎访问ic37.com |
会员登录 免费注册
发布采购

TPS54317RHFR 参数 Datasheet PDF下载

TPS54317RHFR图片预览
型号: TPS54317RHFR
PDF下载: 下载PDF文件 查看货源
内容描述: 1.6兆赫, 3 V至6 V的输入, 3 -A同步降压SWIFT转换器 [1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT CONVERTER]
分类和应用: 转换器输入元件
文件页数/大小: 17 页 / 1128 K
品牌: TI [ TEXAS INSTRUMENTS ]
 浏览型号TPS54317RHFR的Datasheet PDF文件第2页浏览型号TPS54317RHFR的Datasheet PDF文件第3页浏览型号TPS54317RHFR的Datasheet PDF文件第4页浏览型号TPS54317RHFR的Datasheet PDF文件第5页浏览型号TPS54317RHFR的Datasheet PDF文件第6页浏览型号TPS54317RHFR的Datasheet PDF文件第7页浏览型号TPS54317RHFR的Datasheet PDF文件第8页浏览型号TPS54317RHFR的Datasheet PDF文件第9页  
www.ti.com
SLVS619A – NOVEMBER 2005 – REVISED FEBRUARY 2006
1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER
FEATURES
60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Current
Adjustable Output Voltage Down to 0.9 V With
1% Accuracy
Switching Frequency: Adjustable From
280 kHz to 1600 kHz
Externally Compensated for Design Flexibility
Fast Transient Response
Load Protected by Peak Current Limit and
Thermal Shutdown
Integrated Solution Reduces Board Area and
Total Cost
Spacing Saving 4mm x 5mm QFN Packaging
For SWIFT Documentation, Application Notes,
and Design Software, see the TI website at
DESCRIPTION
As members of the SWIFT™ family of dc/dc
regulators,
the
TPS54317
low-input-voltage
high-output-current
synchronous-buck
PWM
converter integrates all required active components.
Included on the substrate with the listed features are
a true, high performance, voltage error amplifier that
provides high performance under transient conditions;
an undervoltage-lockout circuit to prevent start-up
until the input voltage reaches 3 V; an internally and
externally set slow-start circuit to limit in-rush
currents; and a power good output useful for
processor/logic reset, fault signaling, and supply
sequencing.
The TPS54317 device is available in a thermally
enhanced 24-pin QFN (RHF) PowerPAD™ package,
which eliminates bulky heatsinks. TI provides
evaluation modules and the SWIFT designer software
tool to aid in achieving high-performance power
supply designs to meet aggressive equipment
development cycles.
APPLICATIONS
Low-Voltage, High-Density Systems With
Power Distributed at 5 V or 3.3 V
Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
Broadband, Networking and Optical
Communications Infrastructure
Simplified Schematic
Input
VIN
EFFICIENCY
vs
LOAD CURRENT
Output
100
95
90
TPS54317
PH
PWRGD
SS/ENA
SYNC
RT
VBIAS
AGND
Efficiency
%
BOOT
PGND
VSENSE
COMP
85
80
75
70
65
60
55
50
0
0.5
1
1.5
2
2.5
3
3.5
I
O
- Output Current
A
T
A
= 25 C,
V
I
= 3.3 V,
V
O
= 1.8 V,
fs = 1.1 MHz
o
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SWIFT, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2006, Texas Instruments Incorporated