參數(shù)資料
型號: TPS40003EVM
廠商: Texas Instruments, Inc.
英文描述: TPS40003 Evaluation Module(TPS40003評估板)
中文描述: TPS40003評估模塊(TPS40003評估板)
文件頁數(shù): 12/17頁
文件大?。?/td> 339K
代理商: TPS40003EVM
SLUU130A – September 2002 – Revised February 2003
4
TPS40003-Based 5-A Converter in Less Than One Square Inch
TPS40003-Based 5-A Converter in Less Than One Square
Inch
Mark Dennis
Systems Power
Contents
1
Introduction
4
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2
Features
4
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3
Schematic
5
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4
Design Procedure
6
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5
PowerPAD
Packaging
10
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6
Test Results/Performance Data
11
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7
PCB Layout
15
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8
List of Material
16
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1
Introduction
The TPS40002 and the TPS40003 are voltage-mode, synchronous buck PWM controllers that utilize TI’s
proprietary Predictive Gate Drive
technology to wring maximum efficiency from step-down converters. These
controllers provide a bootstrap charging circuit to allow the use of an N-channel MOSFET as the topside buck
switch to reduce conduction losses and increase silicon device utilization. Predictive Gate Drive
technology
controls the delay from main switch turn-off to synchronous rectifier turn-on and also the delay from rectifier
turn-off to main switch turn-on. This allows minimization of the losses in the MOSFET body diodes by reducing
conduction and reverse recovery time. This user’s guide provides details on a 5-A buck converter that converts
3.3 V down to a 1.2-V level utilizing the TPS40003 controller, with less than one square inch board area.
A schematic for the board is shown in Figure 1. A list of material is provided in the final section.
2
Features
The specification for this board is as follows:
D VIN = 3.0 V to 3.6 V
D VOUT = 1.2 V ± 3%
D 0 A ≤ IOUT ≤ 5 A
D Efficiency > 90% with a load of 2 A
D Output voltage ripple < 2% VOUT
D Physical size < 1 square inch circuit area
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS40004 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-INPUT VOLTAGE-MODE SYNCHRONOUS BUCK CONTROLLER
TPS40004DGQ 功能描述:電壓模式 PWM 控制器 Lo Input 300kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
TPS40004DGQG4 功能描述:電壓模式 PWM 控制器 Lo Input 300kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
TPS40004DGQR 功能描述:電壓模式 PWM 控制器 Lo Input 300kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
TPS40004DGQRG4 功能描述:電壓模式 PWM 控制器 Lo Input 300kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel