T520B157M006ATE070 [TI]

TPS8125xEVM;


型号：	T520B157M006ATE070
厂家：	TEXAS INSTRUMENTS
描述：	TPS8125xEVM 电容器 PC
文件：	总14页 (文件大小：473K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

User's Guide

SLVU653–April 2012

TPS8125xEVM

This user's guide describes the characteristics, operation, and use of the TPS8125x evaluation module

(EVM). This EVM enables test and evaluation of Texas Instruments' TPS8125x devices, a series of

4.5-MHz, step-up DC-DC converters. This user's guide includes EVM specifications, a schematic diagram,

a bill of materials, and board layout images.

Contents

Introduction .................................................................................................................. 2

1.1

1.2

1.3

1.4

Requirements ....................................................................................................... 2

Applications ......................................................................................................... 2

EVM Features ...................................................................................................... 2

EVM Ordering Options ............................................................................................ 2

TPS8125xEVM Schematic ................................................................................................. 3

Connector and Test Point Descriptions .................................................................................. 4

3.1

3.2

3.3

Connectors .......................................................................................................... 4

Other Connectors .................................................................................................. 4

Jumpers ............................................................................................................. 4

TPS8125xEVM Printed Circuit Board Layout ........................................................................... 5

Bill of Materials .............................................................................................................. 9

List of Figures

TPS8125xEVM Schematic.................................................................................................

TPS8125xEVM Component Placement..................................................................................

TPS8125xEVM Top Copper...............................................................................................

TPS8125xEVM Inner Layer 1 .............................................................................................

TPS8125xEVM Inner Layer 2 .............................................................................................

TPS8125xEVM Bottom Copper ...........................................................................................

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Introduction

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Introduction

The TPS8125x device is an ideal power-supply solution for products powered by either a three-cell

alkaline, NiCd or NiMH battery, or a single-cell Li-Ion or Li-polymer battery. The wide input voltage range

is well-suited for portable power applications such as mobile phones or computer peripherals.

1.1 Requirements

The TPS8125xEVM is designed to produce a fixed output voltage over the full input voltage range. See

Table 1 for fixed output voltage version options. A DC power supply capable of delivering 2.50 V to 4.85 V

is required to operate this EVM. Please reference the device datasheet for the Recommended Operating

Conditions and Absolute Maximum Ratings.

1.2 Applications

•

USB Host Supplies from a Single Li-Ion Battery

•

USB Dedicated Charging Port Supply

Li-Ion Applications

Audio Applications

RF-PA Buffers

1.3 EVM Features

•

91% Efficiency at 4.5 MHz

V_INRange from 2.50 V to 4.85 V

0.85 μA Quiescent Current in Shutdown Mode

30 μA Quiescent Current in Normal Operation

V_IN> V_OUToperation for Vin up to 5.5V

1.4 EVM Ordering Options

Table 1 provides the ordering Information for the various EVM options.

Table 1. TPS8125x Output Voltage Options and Ordering Information

Orderable EVM Number

Device Part Number

Output Voltage

PWR121-001

TPS81256

5 V

TPS8125xEVM

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TPS8125xEVM Schematic

For reference only; see Table 2 for specific values.

Figure 1. TPS8125xEVM Schematic

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TPS8125xEVM

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Connector and Test Point Descriptions

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Connector and Test Point Descriptions

3.1 Connectors

3.1.1

J1: V_INHeader

This header is the connection for the input power supply and ground. Connect the input power supply to

Pin 1 or 2 and the GND return to Pin 5 or 6. Twist the leads to the power supply and keep them as short

as possible. The input voltage must be between 2.50 V and 4.85 V.

The input Sense connections (Pins 3 and 4) allow access to the input voltage directly at the TPS8125x

input capacitors; therefore, a four-wire power and sense supply can be connected. These connections

allow for accurate voltage measurement by avoiding the I x R voltage drop across the PCB traces. Twist

the leads to the sensing connectors if they are used.

3.1.2

J2: V_OUTHeader

This header is the connection for the output voltage and return. Connect the load between Pin 1 or 2 and

Pin 5 or 6 (GND). The output Sense connections (Pins 3 and 4) allow access to the voltage directly at the

TPS8125x output capacitors. These connections allow for accurate voltage measurement by avoiding the I

x R voltage drop across the PCB traces.

3.2 Other Connectors

3.2.1

J3: SMA Input Connector

This SMA connector is connected to the input voltage node of the converter and can be terminated with a

49.9 ohm resistor. It can be used to easily analyze the noise spectrum of the output voltage with a

spectrum analyzer. By default, J3 is not assembled on the EVM.

3.2.2

J4: SMA Output Connector

This SMA connector is connected to the output voltage node of the converter and can be terminated with

a 49.9 ohm resistor. It can be used to easily analyze the noise spectrum of the output voltage with a

spectrum analyzer. By default, J4 is not assembled on the EVM.

3.3 Jumpers

3.3.1

JP1: Enable Jumper

Placing a jumper across pins EN and ON ties the EN pin to VIN, which enables the device. Placing a

jumper across pins EN and OFF ties the EN pin to GND, which disables the device.

TPS8125xEVM

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TPS8125xEVM Printed Circuit Board Layout

Figure 2 through Figure 6 show the design of the TPS8125xEVM-121 printed circuit board (PCB). The

EVM has been designed using a four-layer PCB with all components on the top side of the board. Moving

components to both sides of the PCB can offer additional size reduction for space-constrained systems.

All the following images are viewed from the top of the PCB.

Figure 2. TPS8125xEVM Component Placement

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TPS8125xEVM Printed Circuit Board Layout

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Figure 3. TPS8125xEVM Top Copper

TPS8125xEVM

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TPS8125xEVM Printed Circuit Board Layout

Figure 4. TPS8125xEVM Inner Layer 1

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TPS8125xEVM

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TPS8125xEVM Printed Circuit Board Layout

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Figure 5. TPS8125xEVM Inner Layer 2

TPS8125xEVM

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Bill of Materials

Figure 6. TPS8125xEVM Bottom Copper

Bill of Materials

Table 2 lists the EVM components as configured according to the schematic shown in Figure 1.

Table 2. TPS8125xEVM Bill of Materials

Count

Ref Des

Value

150 µF

Description

Size

Part Number

MFR

Capacitor, Tantalum, 6.3 V, 70 mΩ, 20%

Capacitor, Ceramic

3528 (B)

0402

T520B157M006ATE070

Kemet

Std

Open

Std

4.7 µF

Capacitor, Ceramic, 16 V, X5R, 10%

Capacitor, Ceramic

0603

GRM188R61C475KAAJ

Murata

Std

Open

0603

Std

J1, J2

J3, J4

JP1

PEC06SAAN

Open

Header, Male 6-pin, 100mil spacing

Connector, SMT Straight, Jack Receptacle

Header, Male 3-pin, 100mil spacing

Resistor, Chip, 1/16W, 1%

0.100 inch x 6

0.250 SQ

0.100 inch x 3

0402

PEC06SAAN

142-0711-201

PEC03SAAN

Std

Sullins

Johnson

Sullins

Std

PEC03SAAN

Open

R1, R2

1.00MΩ

Resistor, Chip, 1/16W, 1%

0603

Std

IC, High-Efficiency Micro-SiP Boost

Converter, 5.0 V

TPS81256SIP

uBGA

TPS81256SIP

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TPS8125xEVM

EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS

Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions:

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims

arising from the handling or use of the goods.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from

the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO

BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF

MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH

ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES.

Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to handling the product. This

notice contains important safety information about temperatures and voltages. For additional information on TI's environmental and/or safety

programs, please visit www.ti.com/esh or contact TI.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or

combination in which such TI products or services might be or are used. TI currently deals with a variety of customers for products, and

therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design,

software performance, or infringement of patents or services described herein.

REGULATORY COMPLIANCE INFORMATION

As noted in the EVM User’s Guide and/or EVM itself, this EVM and/or accompanying hardware may or may not be subject to the Federal

Communications Commission (FCC) and Industry Canada (IC) rules.

For EVMs not subject to the above rules, this evaluation board/kit/module is intended for use for ENGINEERING DEVELOPMENT,

DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer

use. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing

devices pursuant to part 15 of FCC or ICES-003 rules, which are designed to provide reasonable protection against radio frequency

interference. Operation of the equipment may cause interference with radio communications, in which case the user at his own expense will

be required to take whatever measures may be required to correct this interference.

General Statement for EVMs including a radio

User Power/Frequency Use Obligations: This radio is intended for development/professional use only in legally allocated frequency and

power limits. Any use of radio frequencies and/or power availability of this EVM and its development application(s) must comply with local

laws governing radio spectrum allocation and power limits for this evaluation module. It is the user’s sole responsibility to only operate this

radio in legally acceptable frequency space and within legally mandated power limitations. Any exceptions to this are strictly prohibited and

unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory

authorities, which is responsibility of user including its acceptable authorization.

For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant

Caution

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause

harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the

equipment.

FCC Interference Statement for Class A EVM devices

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial

environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the

instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to

cause harmful interference in which case the user will be required to correct the interference at his own expense.

FCC Interference Statement for Class B EVM devices

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment

generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause

harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If

this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and

on, the user is encouraged to try to correct the interference by one or more of the following measures:

•

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

For EVMs annotated as IC – INDUSTRY CANADA Compliant

This Class A or B digital apparatus complies with Canadian ICES-003.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the

equipment.

Concerning EVMs including radio transmitters

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this

device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired

operation of the device.

Concerning EVMs including detachable antennas

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain

approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should

be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum

permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain

greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.

Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada.

Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de

l'utilisateur pour actionner l'équipement.

Concernant les EVMs avec appareils radio

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est

autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout

brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain

maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à

l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente

(p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante.

Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel

d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans

cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur.

SPACER

【Important Notice for Users of this Product in Japan】

This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan

If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product:

1. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and

Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of

Japan,

2. Use this product only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this

product, or

3. Use of this product only after you obtained the Technical Regulations Conformity Certification as provided in Radio Law of Japan with

respect to this product. Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note

that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan.

Texas Instruments Japan Limited

(address) 24-1, Nishi-Shinjuku 6 chome, Shinjukku-ku, Tokyo, Japan

http://www.tij.co.jp

【ご使用にあたっての注】

本開発キットは技術基準適合証明を受けておりません。

本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。

1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。

2. 実験局の免許を取得後ご使用いただく。

3. 技術基準適合証明を取得後ご使用いただく。

なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。

ꢀꢀꢀ上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。

日本テキサス・インスツルメンツ株式会社

東京都新宿区西新宿６丁目２４番１号

西新宿三井ビル

http://www.tij.co.jp

SPACER

EVALUATION BOARD/KIT/MODULE (EVM)

WARNINGS, RESTRICTIONS AND DISCLAIMERS

For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished

electrical equipment and not intended for consumer use. It is intended solely for use for preliminary feasibility evaluation in

laboratory/development environments by technically qualified electronics experts who are familiar with the dangers and application risks

associated with handling electrical mechanical components, systems and subsystems. It should not be used as all or part of a finished end

product.

Your Sole Responsibility and Risk. You acknowledge, represent and agree that:

1. You have unique knowledge concerning Federal, State and local regulatory requirements (including but not limited to Food and Drug

Administration regulations, if applicable) which relate to your products and which relate to your use (and/or that of your employees,

affiliates, contractors or designees) of the EVM for evaluation, testing and other purposes.

2. You have full and exclusive responsibility to assure the safety and compliance of your products with all such laws and other applicable

regulatory requirements, and also to assure the safety of any activities to be conducted by you and/or your employees, affiliates,

contractors or designees, using the EVM. Further, you are responsible to assure that any interfaces (electronic and/or mechanical)

between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to

minimize the risk of electrical shock hazard.

3. You will employ reasonable safeguards to ensure that your use of the EVM will not result in any property damage, injury or death, even

if the EVM should fail to perform as described or expected.

4. You will take care of proper disposal and recycling of the EVM’s electronic components and packing materials.

Certain Instructions. It is important to operate this EVM within TI’s recommended specifications and environmental considerations per the

user guidelines. Exceeding the specified EVM ratings (including but not limited to input and output voltage, current, power, and

environmental ranges) may cause property damage, personal injury or death. If there are questions concerning these ratings please contact

a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the

specified output range may result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or

interface electronics. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the

load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures

greater than 60°C as long as the input and output are maintained at a normal ambient operating temperature. These components include

but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors which can be identified using the

EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during normal operation, please

be aware that these devices may be very warm to the touch. As with all electronic evaluation tools, only qualified personnel knowledgeable

in electronic measurement and diagnostics normally found in development environments should use these EVMs.

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connection with any use of the EVM that is not in accordance with the terms of the agreement. This obligation shall apply whether Claims

arise under law of tort or contract or any other legal theory, and even if the EVM fails to perform as described or expected.

Safety-Critical or Life-Critical Applications. If you intend to evaluate the components for possible use in safety critical applications (such

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which are classified as FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate

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T520B157M006ATE070 [TI]

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