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TPS40003 manual User’s Guide
Models:
TPS40003
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Schematic
Design Procedure
Systems Power
Page 1
Image 1
User’s Guide
TPS40003 Based
5–A
Converter in Less Than One Square Inch
User’s Guide
Page 2
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Page 2
Contents
TPS40003 Based 5-A Converter in Less Than One Square Inch
User’s Guide
User’s Guide
EVM IMPORTANT NOTICE
DYNAMIC WARNINGS AND RESTRICTIONS
1 Introduction
2 Features
Contents 1 Introduction 2 Features 3 Schematic 4 Design Procedure
5 PowerPAD Packaging 6 Test Results/Performance Data 7 PCB Layout
Figure 1. Application Diagram for the TPS40002/3
3 Schematic
SLUU130A - September 2002 - Revised February
TPS40003-Based 5-A Converter in Less Than One Square Inch
4.1 TPS4000X Family Device Selection
4 Design Procedure
4.2 Inductance Value
4.3 Input Capacitor Selection
4.5 MOSFET Selection
4.4 Output Capacitor Selection
4.6 Short Circuit Protection
2 p
4.7 Compensation Design
2 p R
R4 R5
10000
4.8 Snubber Component Selection
Figure 3. PowerPAD PCB Layout Guidelines
5 PowerPAD Packaging
The test setup is shown in figure
6 Test Results/Performance Data
SLUU130A - September 2002 - Revised February
TPS40003-Based 5-A Converter in Less Than One Square Inch
Typical efficiency curves are shown in Figure 5 for an input of 3.3
OUTPUT VOLTAGE RIPPLE 10 mV/div t - Time - 500 ns/div
SHORT CIRCUIT OPERATION 2 V/div t - Time - 1 ms/div
TRANSIENT RESPONSE 50 mV/div t - Time - 20 ∝ s/div
STARTUP WAVEFORM 1 V/div 500 mV/div 500 mV/div t - Time - 200 ∝ s/div
SLUU130A - September 2002 - Revised February
7 PCB Layout
TPS40003-Based 5-A Converter in Less Than One Square Inch
SLUU130A - September 2002 - Revised February
8 List of Material
16 TPS40003-Based 5-A Converter in Less Than One Square Inch
Reference
IMPORTANT NOTICE
