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
1
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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)
3
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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
TH
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%
5
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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
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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
7
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