Texas Instruments EV2400 User manual

User's Guide

SLUU446B–June 2011–Revised August 2014

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 ................................................................................................................ 7

3 Bottom Assembly ............................................................................................................ 8

4 Board Layer 1 ................................................................................................................ 9

5 Board Layer 2............................................................................................................... 10

6 Solder Mask 1 .............................................................................................................. 11

7 Solder Mask 2 .............................................................................................................. 12

8 Silkscreen ................................................................................................................... 13

9 Schematic, Page 1......................................................................................................... 14

10 Schematic, Page 2......................................................................................................... 15

11 Schematic, Page 3......................................................................................................... 16

List of Tables

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

SLUU446B–June 2011–Revised August 2014 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 and I2C 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 or I2C 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

Port 3: HDQ HDQ and DQ Interface Ports Future expansion port

Port 4 Single Wire Port Future expansion port

Port 5 GPIO Port Future expansion port

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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 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 port is not currently supported.

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. Pulled up to 3.3 V with a 20-kΩresistor. Uses bus acceleration in

positive direction to allow for larger pullup.

2.3 SDA I2C data. Pulled up to 3.3 V with a 20-kΩresistor. Uses bus acceleration in positive

direction to allow for larger pullup.

2.4 VOUT 2 Optional voltage output (future expansion)

SLUU446B–June 2011–Revised August 2014 EV2400 EVM Interface Board

Interfaces

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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 3.3 V with a 20-kΩresistor. Uses bus acceleration in

positive direction to allow for a larger pullup resistor.

1.3 SDA SMBus data. Pulled up to 3.3 V with a 20-kΩresistor. Uses bus acceleration in

positive direction to allow for a larger pullup resistor.

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, C5, 0.1 µF Capacitor, Ceramic, 0603 STD Any

C6, C7, C11, C13, 25 V, X7R, 20%

C15, C16, 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, Ceramic, 0805 STD Any

25 V, X7R, 20%

1 C36 2.2 nF Capacitor, Ceramic, 0603 STD Any

25 V, X7R, 20%

2 C37, C41 220 pF Capacitor, Ceramic, 0603 STD Any

50 V, C0G, 5%

1 C40 470 nF Capacitor, Ceramic, 0603 STD Any

25 V, X7R, 20%

2 C42, C43 12 pF Capacitor, Ceramic, 0603 STD Any

50 V, C0G, 10%

2 C8, C10 2.2 µF Capacitor, Ceramic, 0603 STD Any

25 V, X7R, 20%

3 C9, C14, C17 10 µF Capacitor, Tantalum, 3216 293D106X0010A2T Vishay

10 µF, 10 V, 20%

6 D1, D2, D3, D4, D5, GL05T Diode, TVS diode, SOT23 GL05T General

D6 Low Capacitance

3 D7, D8, D9 SSF-LXH305GD-TR Diode. LED, 2.6 V, 0.250 x SSF-LXH305GD-TR Lumex

25 mA 0.250 inch

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

Upstream (Type B) inch

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

Lock Ass'y, 4-pin 0.500 inch

Right Angle,

1 J6 PEC12DBAN Header, Right Angle, 0.100 inch PEC12DBAN Sullins

Male 2x12-pin, x 12 x 2

100mil spacing (12-

pin strip), right-angle

1 J7 RAPC 722 Connector, 2.1mm, 0.57 x 0.35 RAPC 722 Switchcraft

DC Jack w/Switch, inch

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

Friction Lock, 100- 0.400 inch

mil spacing

0 JP1, JP2, JP3, JP4, DNP Header, 2-pin, 100- 0.100 inch PEC02SAAN Sullins

JP5, JP6 mil spacing x 2

1 JP7 PEC02SAAN Header, 2-pin, 100- 0.100 inch PEC02SAAN Sullins

mil spacing x 2

6 Q1, Q2, Q3, Q4, Q5, BSS223PW MOSFET, Pch, –20 SOT323 BSS223PW Infineon

Q6 V, –0.39 A, 1.2 Ohm

3 Q7, Q8, Q9 2N7002W MOSFET, Nch, 60 SOT323 2N7002W Diodes

V, 115 mA [SC70]

1 R1 33 kΩResistor, Chip, 1/16 0603 STD Any

W, 5%

4 R10, R11, R13, R14 20 kΩResistor, Chip, 1/16 0603 STD Any

W, 5%

SLUU446B–June 2011–Revised August 2014 EV2400 EVM Interface Board

EV2400 Bill of Materials, Component Placement, Schematic

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Count Reference Design Value Description Size Part Number Manufacturer

2 R2, R3 33 ΩResistor, Chip, 1/16 0603 STD Any

W, 5%

1 R26 470 ΩResistor, Chip, 1/16 0603 STD Any

W, 1%

1 R27 51 kΩResistor, Chip, 1/16 0603 STD Any

W, 1%

1 R28 100 kΩResistor, Chip, 1/10 0603 STD Any

W, 1%

3 R39, R40, R41 200 ΩResistor, Chip, 1/16 0603 STD Any

W, 5%

1 R4 1.5 kΩResistor, Chip, 1/16 0603 STD Any

W, 5%

1 R42 47 kΩResistor, Chip, 1/16 0603 STD Any

W, 5%

3 R43, R44, R45 10 kΩResistor, Chip, 1/10 0603 STD Any

W, 1%

3 R46, R47, R48 100 kΩResistor, Chip, 1/16 0603 STD Any

W, 5%

21 R5, R6, R7, R12, 10 kΩResistor, Chip, 1/16 0603 STD Any

R15, R16, R19, R20, W, 5%

R22, R24, R25, R29,

R30, R31, R32, R33,

R34, R35, R36, R37,

R38

6 R8, R9, R17, R18, 100 ΩResistor, Chip, 1/16 0603 STD Any

R21, R23 W, 5%

1 SW1 EVQPSD02K Switch, SMD Light- 6.1 mm x EVQPSD02K Panasonic

Touch, Side 4.0 mm

Operation

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

Thru Hole Color 0.100 inch

Keyed

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

Thru Hole Color 0.100 inch

Keyed

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

Thru Hole Color 0.100 inch

Keyed

1 TP4 GND Test Point, Black, 0.100 x 5001 Keystone

Thru Hole Color 0.100 inch

Keyed

1 U1 MSP430F5529IPN IC, Mixed Signal TQFP-80 MSP430F5529IPN TI

Microcontroller

6 U10, U11, U12, U13, TPS73601DBV IC, Cap-Free, SOT23-5 TPS73601DBV TI

U15, U18 NMOS, 400mA LDO

Regulator with

Reverse Current

Protection.

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

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 supply 10-QFN ST2329AQTR ST

level translator

without direction

control pin

1 U7 TPS79650DCQ IC, Ultralow-Noise, SOT223-6 TPS79650DCQ TI

High PSRR Fast RF,

LDO, 1A, 5V

6EV2400 EVM Interface Board SLUU446B–June 2011–Revised August 2014

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EV2400 Bill of Materials, Component Placement, Schematic

Count Reference Design Value Description Size Part Number Manufacturer

1 U8 TPS2113APW IC, Auto Switching SO8 TPS2113APW TI

Power Mux, Rds 84

milli Ohm, 1A.

2 U9, U14 ISL90842UIV1427Z IC, Quad Digitally TSSOP ISL90842UIV1427Z Intersil

Controlled

Potentiometers

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

Crystal 0.190 inch

1 — PCB HPA500 Any

1 Plastic, Enclosure, 115574-501-000 PACTEC

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.

3.2 EV2400 Component Placement

Figure 2. Top Assembly

SLUU446B–June 2011–Revised August 2014 EV2400 EVM Interface Board

EV2400 Bill of Materials, Component Placement, Schematic

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Figure 3. Bottom Assembly

8EV2400 EVM Interface Board SLUU446B–June 2011–Revised August 2014

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EV2400 Bill of Materials, Component Placement, Schematic

Figure 4. Board Layer 1

SLUU446B–June 2011–Revised August 2014 EV2400 EVM Interface Board

EV2400 Bill of Materials, Component Placement, Schematic

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Figure 5. Board Layer 2

10 EV2400 EVM Interface Board SLUU446B–June 2011–Revised August 2014

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