Texas Instruments TMUX-24PW-EVM Manual de usuario

User’s Guide

TMUX-24PW-EVM User's Guide

ABSTRACT

This document is the EVM user’s guide for the TMUX-24PW-EVM, which provides a quick way to evaluate TI

devices that use a 24-pin PW package.

Table of Contents

1 Introduction.............................................................................................................................................................................2

2 General Texas Instruments High Voltage Evaluation Module (TI HV EVM) User Safety Guidelines...............................5

3 Information About Cautions and Warnings..........................................................................................................................6

4 Features...................................................................................................................................................................................6

5 TMUX-24PW-EVM Header Connections and Test Points.................................................................................................... 7

6 TMUX-24PW-EVM Setup.......................................................................................................................................................10

7 Layout.................................................................................................................................................................................... 12

8 Schematics............................................................................................................................................................................13

9 Bill of Materials..................................................................................................................................................................... 17

10 Revision History................................................................................................................................................................. 18

List of Figures

Figure 1-1. TMUX-24PW-EVM Top View.....................................................................................................................................2

Figure 1-2. TMUX-24PW-EVM Bottom View............................................................................................................................... 3

Figure 1-3. TMUX-24PW-EVM 3D View...................................................................................................................................... 4

Figure 5-1. Header J3 for U1.3.................................................................................................................................................... 7

Figure 5-2. Pinout of Headers......................................................................................................................................................7

Figure 5-3. Test Point Colors....................................................................................................................................................... 8

Figure 6-1. DUT Footprint U1.................................................................................................................................................... 10

Figure 6-2. Signal Line Circuitry (3D)........................................................................................................................................ 10

Figure 6-3. Signal Line Circuitry.................................................................................................................................................11

Figure 6-4. Signal Line Circuitry Bottom Layer.......................................................................................................................... 11

Figure 7-1. Illustration of TMUX-24PW-EVM Layout................................................................................................................. 12

Figure 8-1. TMUX-24PW-EVM Schematic Page 1 (Editor View)...............................................................................................13

Figure 8-2. TMUX-24PW-EVM Schematic Page 2 (Editor View)...............................................................................................14

Figure 8-3. TMUX-24PW-EVM Schematic Page 1 (DNI)...........................................................................................................15

Figure 8-4. TMUX-24PW-EVM Schematic Page 2 (DNI)...........................................................................................................16

List of Tables

Table 5-1. Connections by Header Pin Number.......................................................................................................................... 7

Table 5-2. Test Point Connections............................................................................................................................................... 8

Table 9-1. TMUX-24PW-EVM Bill of Materials...........................................................................................................................17

Trademarks

All trademarks are the property of their respective owners.

www.ti.com Table of Contents

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TMUX-24PW-EVM User's Guide 1

1 Introduction

This user's guide describes the TMUX-24PW-EVM evaluation module (EVM) and its intended use. This board

allows for the quick prototyping and DC characterization of TI’s line of TMUX products that use 24-pin TSSOP

packages (PW).

Figure 1-1. TMUX-24PW-EVM Top View

Introduction www.ti.com

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Figure 1-2. TMUX-24PW-EVM Bottom View

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TMUX-24PW-EVM User's Guide 3

Figure 1-3. TMUX-24PW-EVM 3D View

Introduction www.ti.com

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2 General Texas Instruments High Voltage Evaluation Module (TI HV EVM) User Safety

Guidelines

WARNING

Always follow TI’s setup and application instructions, including use of all interface components within their

recommended electrical rated voltage and power limits. Always use electrical safety precautions to help

ensure your personal safety and those working around you. Contact TI's Product Information Center http://

support/ti./com for further information.

Save all warnings and instructions for future reference.

WARNING

Failure to follow warnings and instructions may result in personal injury, property damage or death

due to electrical shock and burn hazards.

The term TI HV EVM refers to an electronic product typically provided as an open framed, unenclosed

printed circuit board assembly. It is intended strictly for use in development laboratory environments, solely

for qualified professional users having training, expertise and knowledge of electrical safety risks in development

and application of high voltage electrical circuits. Any other use or application are strictly prohibited by Texas

Instruments. If you are not suitably qualified, you should immediately stop from further use of the HV EVM.

1. Work Area Safety

a. Keep work area clean and orderly.

b. One or more qualified observers must be present anytime circuits are energized.

c. Effective barriers and signage must be present in the area where the TI HV EVM and its interface

electronics are energized, indicating operation of accessible high voltages may be present, for the

purpose of protecting inadvertent access.

d. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other related

apparatus used in a development environment exceeding 50Vrms/75VDC must be electrically located

within a protected Emergency Power Off EPO protected power strip.

e. Use stable and nonconductive work surface.

f. Use adequately insulated clamps and wires to attach measurement probes and instruments. No

freehand testing whenever possible.

2. Electrical Safety

As a precautionary measure, it is always a good engineering practice to assume that the entire EVM may

have fully accessible and active high voltages.

a. De-energize the TI HV EVM and all its inputs, outputs and electrical loads before performing any

electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely de-

energized.

b. With the EVM confirmed de-energized, proceed with required electrical circuit configurations, wiring,

measurement equipment connection, and other application needs, while still assuming the EVM circuit

and measuring instruments are electrically live.

c. After EVM readiness is complete, energize the EVM as intended.

WARNING

While the EVM is energized, never touch the EVM or its electrical circuits, as they could be at

high voltages capable of causing electrical shock hazard.

3. Personal Safety

a. Wear personal protective equipment (for example, latex gloves or safety glasses with side shields) or

protect EVM in an adequate lucent plastic box with interlocks to protect from accidental touch.

Limitation for safe use:

EVMs are not to be used as all or part of a production unit.

www.ti.com General Texas Instruments High Voltage Evaluation Module (TI HV EVM) User Safety Guidelines

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TMUX-24PW-EVM User's Guide 5

3 Information About Cautions and Warnings

The information in the warning statement is provided for personal protection and the information in the caution

statement is provided to protect the equipment from damage. Read each caution and warning statement

carefully.

CAUTION

This EVM contains components that can potentially be damaged by electrostatic discharge. Always

transport and store the EVM in its supplied ESD bag when not in use. Handle using an antistatic

wristband. Operate on an antistatic work surface. For more information on proper handling, see

Electrostatic Discharge (ESD).

4 Features

The TMUX-24PW-EVM has the following features:

• 3 power supply decoupling capacitors from VDD to GND (3 × 3.3 µF)

• 1 protection diode pad from VDD to GND available near power supply (6.9 mm × 5.8 mm)

• 3 power supply decoupling capacitors from VSS to GND (3 × 3.3 μF)

• 1 protection diode pad from VSS to GND available near power supply (6.9 mm × 5.8 mm)

• Terminal block power supply connection

• DUT footprint compatible with 24-pin PW (TSSOP) packages

• 24 length-matched signal inputs corresponding to the 24 pins of the DUT

• Selectable connections to VDD, VSS, or GND for each signal input using 2.54 mm shunt

• Footprints for pull-up and pull-down resistors for each signal input (2 × 0603 footprint on each of 24 signals)

• Footprints for series resistors for each signal input (2 × 0805 footprint on each of 24 signals)

• Footprints for decoupling capacitors for each input (1 × 1206 footprint and 1 × 1812 footprint on each of 24

signals)

• 2 test points for each signal input

• Multiple GND test point connections around board

Information About Cautions and Warnings www.ti.com

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5 TMUX-24PW-EVM Header Connections and Test Points

There are 24 headers located around the board with designators J1 through J24. These 3-by-2 headers serve as

connections to power planes and to signals of the DUT (U1). Each pin of the DUT has similar header and test

point configuration. At four different locations around the board, a legend shows the connections of the pins of

the nearby five headers. Figure 5-1 shows a representation of the header associated with pin 3 of U1.

Figure 5-1. Header J3 for U1.3

The silkscreen legend represents the connections of the pins of J3. Figure 5-2 shows the pin numbers of this

header from this same perspective.

Figure 5-2. Pinout of Headers

Table 5-1 also shows the connections.

Table 5-1. Connections by Header Pin Number

Header pin number Connection

1 No connection

2 VDD

3 GND

4 U1

5 GND

6 VSS

For all headers J1 through J24, the connections are the same, but are rotated by a multiple of 90° according to

their position on the board. A legend is included for each rotation.

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TMUX-24PW-EVM User's Guide 7

In addition to headers, multiple test points are located around the board. Black test points (TP2 and TP4-TP11)

are connected to GND, the red test point (TP1) is connected to VDD, and the green test point (TP3) is connected

to VSS. The remaining blue test points (TP12-TP59) are connected along the signal paths of the pins of U1.

Figure 5-3. Test Point Colors

Table 5-2 shows the test point connections.

Table 5-2. Test Point Connections

Designator Connection

TP1 VDD

TP2 GND

TP3 VSS

TP4 GND

TP5 GND

TP6 GND

TP7 GND

TP8 GND

TP9 GND

TP10 GND

TP11 GND

TP12 J1.4

TP13 U1.1

TP14 J2.4

TMUX-24PW-EVM Header Connections and Test Points www.ti.com

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Table 5-2. Test Point Connections (continued)

Designator Connection

TP15 U1.2

TP16 J3.4

TP17 U1.3

TP18 J4.4

TP19 U1.4

TP20 J5.4

TP21 U1.5

TP22 J6.4

TP23 U1.6

TP24 J7.4

TP25 U1.7

TP26 J8.4

TP27 U1.8

TP28 J9.4

TP29 U1.9

TP30 J10.4

TP31 U1.10

TP32 J11.4

TP33 U1.11

TP34 J12.4

TP35 U1.12

TP36 J13.4

TP37 U1.13

TP38 J14.4

TP39 U1.14

TP40 J15.4

TP41 U1.15

TP42 J16.4

TP43 U1.16

TP44 J17.4

TP45 U1.17

TP46 J18.4

TP47 U1.18

TP48 J19.4

TP49 U1.19

TP50 J20.4

TP51 U1.20

TP52 J21.4

TP53 U1.21

TP54 J22.4

TP55 U1.22

TP56 J23.4

TP57 U1.23

TP58 J24.4

TP59 U1.24

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TMUX-24PW-EVM User's Guide 9

Terminal block J25 is the power input for the board. Three power rails (VSS, GND, and VDD) are labeled on the

board’s silkscreen layer, indicating the identities of the input pins of the header. Connect the power supply rails at

this terminal block to power the board.

6 TMUX-24PW-EVM Setup

Figure 6-1. DUT Footprint U1

The TMUX-24PW-EVM will not have any device connected at footprint U1, and there are not any devices

included with the EVM for this footprint. Attach any compatible Texas Instruments TMUX device to this location,

which will serve as the Device Under Test (DUT). Compatible devices include 24-pin parts with PW package

names.

The headers of the TMUX-24PW-EVM can be easily connected to a power rail using 2.54 mm shunts on J1-J24.

Connecting the shunt between pin 4 of the header and pin 3 (GND) to connect the corresponding pin of U1 to

GND. Alternatively, the pins of U1 can be shorted to VDD or VSS by connecting between pin 4 of the header

and pin 2 or pin 6 respectively. Figure 5-2 and Table 5-1 includes detailed descriptions of the connections on J1

through J24.

Figure 6-2. Signal Line Circuitry (3D)

As shown in Figure 6-2 and Figure 6-3 as R4 and R16 on the J4 (pin 4 of U1) signal line, the TMUX-24PW-EVM

includes 0 Ω series resistors (0805 package) on each signal line.

TMUX-24PW-EVM Setup www.ti.com

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