Texas Instruments TPS2151 - Manuals

Page 2 - IMPORTANT NOTICE

IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvements, and other changes to its products and services at any time and to discontinueany product or service without notice. Customers should obtain the l...

Page 3 - EVM IMPORTANT NOTICE

EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATIONPURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods be...

Page 4 - EVM WARNINGS AND RESTRICTIONS

EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the specified input and output ranges described inthe EVM User’s Guide. Exceeding the specified input range may cause unexpected operation and/or irreversibledamage to the EVM. If there are questions concerning the input range,...

Page 5 - Preface; About This Manual; This document contains the following chapters:

How to Use This Manual v Preface About This Manual The TPS2151 is one of the four devices in the USB peripheral powermanagement family TPS2140/41/50/51, which integrates both an adjustablelinear low-drop voltage regulator (LDO) and a dual-current-limited powerswitch. The dual-current-limit power swi...

Page 6 - Information About Cautions and Warnings; This book may contain cautions and warnings.; This is an example of a caution statement.

Information About Cautions and Warnings vi Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a situation that could potentiallydamage your software or equipment. This is an example of a warnin...

Page 7 - Introduction

Contents vii 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Schematic, Bill of Materials, Layout, and Setup 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 ...

Page 9 - Chapter 1

1-1 Introduction Each device in TPS2140/41/50/51 family integrates a dual-current-limitingpower switch and an adjustable low dropout regulator (LDO). Both the switchand LDO limit inrush current by controlling the turnon slew rate and arecompatible with USB 1.0 and 2.0 Specifications. The power switc...

Page 11 - Schematic of the EVM; Chapter 2

2-1 Schematic, Bill of Materials, Layout, and Setup This chapter contains schematics, bill of materials, board layout, and setup ofEVM. Topic Page 2.1 Schematic of the EVM 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Bill of Materials 2-4 . . . . . . . . ...

Page 12 - Figure 2–1 shows the schematic of the EVM.

Schematic of the EVM 2-2 2.1 Schematic of the EVM Figure 2–1 shows the schematic of the EVM. Figure 2–1. Schematic of the TPS2151 Evaluation Module (EVM) + + + +

Page 14 - Warning; Bill of Materials; The bill of materials (BOM) for the EVM is shown in Table 2–1.

Bill of Materials 2-4 Warning Users must not activate the load on SW_OUT before the SW_PGrises to high, if the load current is higher than 50 mA. Otherwise,the power switch output could not be charged up to SW_IN rail. 2.2 Bill of Materials The bill of materials (BOM) for the EVM is shown in Table 2...

Page 15 - Layout of the EVM; Figure 2–2. Top Layer of the EVM and Placement of the Components

Layout of the EVM 2-5 Schematic, Bill of Materials, Layout, and Setup 2.3 Layout of the EVM Figure 2–2 illustrates the placement of the components on the top-layer of theTPS2151 EVM. All the components are placed on the top layer only. Thebottom layer is mainly a ground plane except for a few short ...

Page 16 - Setup of the EVM

Layout of the EVM 2-6 2.4 Setup of the EVM For proper operation of the EVM, please follow these steps for any evaluation: 1) Verify that the power supply voltages are in the required ranges: less than 5.5 V but higher than 4.1 V. Make sure the supplies have the capability tosupply the current that t...

Page 17 - F total on each input.; Table 3–1. Test Points and Test Signals; Color; Chapter 3

3-1 Changeable Components and Test Points C1, C2, C3, C4—input capacitors, at least 0.047 µ F total on each input. C5, C6, C8, C9—load capacitors, vary according to loads, but C5 plus C6 mustbe at least 4.7 µ F. R2—top resistor of the resistor divider, refer to data sheet for its resistancevalue. R1...