Texas Instruments EV2400 Manuale utente

User's Guide

SLUU446A–June 2011–Revised September 2011

EV2400 EVM Interface Board

This user's guide describes the function and operation of the EV2400 evaluation module interface board.

A complete description, as well as the bill of materials and schematic are included.

Contents

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

2 Interfaces ..................................................................................................................... 2

3 EV2400 Bill of Materials, Component Placement, Schematic ........................................................ 5

List of Figures

1 EV2400 Ports................................................................................................................ 3

2 Top Assembly ............................................................................................................... 8

3 Bottom Assembly ........................................................................................................... 9

4 Board Layer 1.............................................................................................................. 10

5 Board Layer 2.............................................................................................................. 11

6 Solder Mask 1.............................................................................................................. 12

7 Solder Mask 2.............................................................................................................. 13

8 Silkscreen................................................................................................................... 14

9 Schematic, Page 1 ........................................................................................................ 15

10 Schematic, Page 2 ........................................................................................................ 16

11 Schematic, Page 3 ........................................................................................................ 17

List of Tables

1 Ordering Information........................................................................................................ 2

SLUU446A–June 2011–Revised September 2011 EV2400 EVM Interface Board

Introduction

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1 Introduction

The EV2400 EVM interface board enables an IBM-compatible or other type PC (with the required driver

for its particular platform) to communicate with the Texas Instruments SMBus, I2C, HDQ, or DQ interface

gas gauges via a Universal Serial Bus (USB) port. In addition to this board, PC software is required to

interpret the gas gauge data to complete the evaluation system.

1.1 Features

•Fully powered from the USB port

•Optional 5-V port for powering high power voltage drivers (future upgrade)

•Complete interface between the USB and SMBus, I2C, and HDQ (8/16) interfaces using a simple API

•Expansion port for future upgrades

1.2 Kit Contents

•EV2400 circuit module

•Standard USB cable

1.3 Ordering Information

Table 1. Ordering Information

EVM Part Number

EV2400

2 Interfaces

The EV2400 interfaces are described in the following table. The reference designators on the circuit board

and the functions are also listed.

Reference Designator Function Details

Terminal block for connecting to a target

Port 1: SMB SMBus Interface Port device

Terminal block for connecting to a target

Port 2: I2C I2C Interface Port device

Terminal block for connecting to a target

Port 3: HDQ HDQ and DQ Interface Ports device

Port 4 Single Wire Port Future expansion port

Port 5 GPIO Port Future expansion port

2EV2400 EVM Interface Board SLUU446A–June 2011–Revised September 2011

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Interfaces

2.1 Overview

The EV2400 ports are shown in Figure 1.

Figure 1. EV2400 Ports

NOTE: The additional power input 5-V port on the EV2400 must not be connected in normal

operation. Normal operation uses power from the USB port.

2.2 EV2400 Controller

The EV2400 controller is an MSP430F5529 running at 4 MHz. The controller firmware is stored in flash

memory and is executed by the core at power-up.

The controller communicates with target device(s) through either: a 2-wire SMBus communication port, a

1-wire HDQ port, or a 2-wire EEPROM I2C port. The 2-wire SMBus communication port supports both

SMBus and I2C protocols. CRC-8 checksum verification for the data packets prevents data corruption over

the USB.

2.3 USB Interface (USB)

The interface board connects to a USB port (version 1.1 or later) on a host computer and is powered from

the port. All communication over the USB is human Interface device (HID) class. Drivers are built into

Windows ®and most of the operating systems.

2.4 HDQ Interface (HDQ)

This interface allows a host computer to interact with a slave or target device through the 1-wire HDQ

interface. The ports are labeled with the corresponding signal names above each port connector. Connect

the signal and a ground reference (VSS) to a target device.

Pin Name Description

3.1 VSS Ground return/reference for HDQ interface.

3.2 VOUT 3 Optional voltage output (future expansion)

3.3 SDA HDQ 1-wire interface. Pulled up to variable pullup voltage with a 20-kΩ

resistor. Uses bus acceleration in positive direction to allow for larger

pullup.

3.4 VOUT 4 Optional voltage output (future expansion)

SLUU446A–June 2011–Revised September 2011 EV2400 EVM Interface Board

Interfaces

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2.5 I2C Interface (I2C)

This interface allows a host computer to interact with I2C interfaces, such as a battery monitor device and

EEPROM through a 2-wire I2C interface. Connect the data, clock, and a ground reference (VSS) to a

target device.

Pin Name Description

2.1 VSS Ground return/reference for I2C interface.

2.2 SCL I2C clock. Uses level translation. Pulled up to variable pullup voltage with a

20-kΩresistor. Uses bus acceleration in positive direction to allow for

larger pullup.

2.3 SDA I2C data. Uses level translation. Pulled up to variable pullup voltage with a

20-kΩresistor. Uses bus acceleration in positive direction to allow for

larger pullup.

2.4 VOUT 2 Optional voltage output (future expansion)

2.6 SMBus Interface (SMBus)

This interface allows a host computer to interact with an SMBus interface device such as a battery monitor

device through a 2-wire SMBus interface. Connect the data, clock, and a ground reference (VSS) to a

target device.

Pin Name Description

1.1 VSS Ground return/reference for SMBus

interface.

1.2 SCL SMBus clock. Pulled up to variable pullup

voltage with a 20-kΩresistor. Uses bus

acceleration in positive direction to allow

for larger pullup.

1.3 SDA SMBus data. Pulled up to variable pullup

voltage with a 20-kΩresistor. Uses bus

acceleration in positive direction to allow

for larger pullup.

1.4 VOUT 1 Optional voltage output (future expansion)

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EV2400 Bill of Materials, Component Placement, Schematic

3 EV2400 Bill of Materials, Component Placement, Schematic

This chapter includes the bill of materials, component placement on the circuit board, and schematic for

the EV2400 EVM.

3.1 Bill of Materials (BOM)

Count Reference Design Value Description Size Part Number Manufacturer

31 C1, C2, C3, C4, 0.1 µF Capacitor, 0603 STD Any

C5, C6, C7, C11, Ceramic, 25 V,

C13, C15, C16, X7R, 20%

C18, C19, C20,

C21, C22, C23,

C24, C25, C26,

C27, C28, C29,

C30, C31, C32,

C33, C34, C35,

C38, C39

1 C12 4.7 µF Capacitor, 0805 STD Any

Ceramic, 25 V,

X7R, 20%

1 C36 2.2 nF Capacitor, 0603 STD Any

Ceramic, 25 V,

X7R, 20%

2 C37, C41 220 pF Capacitor, 0603 STD Any

Ceramic, 50 V,

C0G, 5%

1 C40 470 nF Capacitor, 0603 STD Any

Ceramic, 25 V,

X7R, 20%

2 C42, C43 12 pF Capacitor, 0603 STD Any

Ceramic, 50 V,

C0G, 10%

2 C8, C10 2.2 µF Capacitor, 0603 STD Any

Ceramic, 25 V,

X7R, 20%

3 C9, C14, C17 10 µF Capacitor, 3216 293D106X0010A Vishay

Tantalum, 10 µF, 2T

10 V, 20%

6 D1, D2, D3, D4, GL05T Diode, TVS SOT23 GL05T General

D5, D6 diode, Low

Capacitance

3 D7, D8, D9 SSF-LXH305GD- Diode. LED, 2.6 0.250 x0.250 SSF- Lumex

TR V, 25 mA inch LXH305GD-TR

1 J1 67068-1000 Connector, USB 0.47 x 0.67 inch 67068-1000 Molex

Upstream (Type

4 J2, J3, J4, J5 22-05-3041 Header, Friction 0.400 x 0.500 22-05-3041 Molex

Lock Ass'y, 4-pin inch

Right Angle,

1 J6 PEC12DBAN Header, Right 0.100 inch x 12 PEC12DBAN Sullins

Angle, Male x 2

2x12-pin, 100mil

spacing (12-pin

strip), right-angle

1 J7 RAPC 722 Connector, 0.57 x 0.35 inch RAPC 722 Switchcraft

2.1mm, DC Jack

w/Switch, TH

1 J8 22-23-2041 Header, 4-pin 0.250 x 0.400 22-23-2041 Molex

Friction Lock, inch

100-mil spacing

0 JP1, JP2, JP3, DNP Header, 2-pin, 0.100 inch x 2 PEC02SAAN Sullins

JP4, JP5, JP6 100-mil spacing

SLUU446A–June 2011–Revised September 2011 EV2400 EVM Interface Board

EV2400 Bill of Materials, Component Placement, Schematic

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Count Reference Design Value Description Size Part Number Manufacturer

1 JP7 PEC02SAAN Header, 2-pin, 0.100 inch x 2 PEC02SAAN Sullins

100-mil spacing

6 Q1, Q2, Q3, Q4, BSS223PW MOSFET, Pch, SOT323 BSS223PW Infineon

Q5, Q6 –20 V, –0.39 A,

1.2 Ohm

3 Q7, Q8, Q9 2N7002W MOSFET, Nch, SOT323 [SC70] 2N7002W Diodes

60 V, 115 mA

1 R1 33 kΩResistor, Chip, 0603 STD Any

1/16 W, 5%

4 R10, R11, R13, 20 kΩResistor, Chip, 0603 STD Any

R14 1/16 W, 5%

2 R2, R3 33 ΩResistor, Chip, 0603 STD Any

1/16 W, 5%

1 R26 470 ΩResistor, Chip, 0603 STD Any

1/16 W, 1%

1 R27 51 kΩResistor, Chip, 0603 STD Any

1/16 W, 1%

1 R28 100 kΩResistor, Chip, 0603 STD Any

1/10 W, 1%

3 R39, R40, R41 200 ΩResistor, Chip, 0603 STD Any

1/16 W, 5%

1 R4 1.5 kΩResistor, Chip, 0603 STD Any

1/16 W, 5%

1 R42 47 kΩResistor, Chip, 0603 STD Any

1/16 W, 5%

3 R43, R44, R45 10 kΩResistor, Chip, 0603 STD Any

1/10 W, 1%

3 R46, R47, R48 100 kΩResistor, Chip, 0603 STD Any

1/16 W, 5%

21 R5, R6, R7, R12, 10 kΩResistor, Chip, 0603 STD Any

R15, R16, R19, 1/16 W, 5%

R20, R22, R24,

R25, R29, R30,

R31, R32, R33,

R34, R35, R36,

R37, R38

6 R8, R9, R17, R18, 100 ΩResistor, Chip, 0603 STD Any

R21, R23 1/16 W, 5%

1 SW1 EVQPSD02K Switch, SMD 6.1 mm x 4.0 EVQPSD02K Panasonic

Light-Touch, mm

Side Operation

1 TP1 5VUSB Test Point, Red, 0.100 x 0.100 5000 Keystone

Thru Hole Color inch

Keyed

1 TP2 5VPLUG Test Point, Red, 0.100 x 0.100 5000 Keystone

Thru Hole Color inch

Keyed

1 TP3 3.3V Test Point, Red, 0.100 x 0.100 5000 Keystone

Thru Hole Color inch

Keyed

1 TP4 GND Test Point, 0.100 x 0.100 5001 Keystone

Black, Thru Hole inch

Color Keyed

1 U1 MSP430F5529IP IC, Mixed Signal TQFP-80 MSP430F5529IP TI

N Microcontroller N

6 U10, U11, U12, TPS73601DBV IC, Cap-Free, SOT23-5 TPS73601DBV TI

U13, U15, U18 NMOS, 400mA

LDO Regulator

with Reverse

Current

Protection.

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EV2400 Bill of Materials, Component Placement, Schematic

Count Reference Design Value Description Size Part Number Manufacturer

1 U2 TPS2550DBV IC, SOT-23-6 TPS2550DBV TI

Power-

Distribution

Switch,

Current-Limited

1 U3 TPS76333DBV IC, Micro-Power SOT23-5 TPS76333DBV TI

150-mA LDO

Regulator

3 U4, U5, U6 ST2329AQTR IC, 2-bit dual 10-QFN ST2329AQTR ST

supply level

translator

without direction

control pin

1 U7 TPS79650DCQ IC, SOT223-6 TPS79650DCQ TI

Ultralow-Noise,

High PSRR Fast

RF, LDO, 1A, 5V

1 U8 TPS2113APW IC, Auto SO8 TPS2113APW TI

Switching Power

Mux, Rds 84

milli Ohm, 1A.

2 U9, U14 ISL90842UIV1427 IC, Quad TSSOP ISL90842UIV142 Intersil

Z Digitally 7Z

Controlled

Potentiometers

1 Y1 4 MHz Crystal, SMT 0.484 x 0.190 ATS040SM CTS

Quartz Crystal inch

1—PCB HPA500 Any

1 Plastic, 115574-501-000 PACTEC

Enclosure,

Silkscreened,

Two Custom end

panels, screws

Notes: 1. These assemblies are ESD sensitive, ESD precautions shall be observed.

2. These assemblies must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable.

3. These assemblies must comply with workmanship standards IPC-A-610 Class 2.

4. Ref designators marked with an asterisk ('**') cannot be substituted. All other components can be substituted with

equivalent manufacturers'components.

SLUU446A–June 2011–Revised September 2011 EV2400 EVM Interface Board

EV2400 Bill of Materials, Component Placement, Schematic

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3.2 EV2400 Component Placement

Figure 2. Top Assembly

8EV2400 EVM Interface Board SLUU446A–June 2011–Revised September 2011

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EV2400 Bill of Materials, Component Placement, Schematic

Figure 3. Bottom Assembly

SLUU446A–June 2011–Revised September 2011 EV2400 EVM Interface Board

EV2400 Bill of Materials, Component Placement, Schematic

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Figure 4. Board Layer 1

10 EV2400 EVM Interface Board SLUU446A–June 2011–Revised September 2011

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