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bq2052EVM Primary Lithium Gauge Evaluation Module
User's Guide
Advanced Analog Products
SLUU078
IMPORTANT NOTICE Texas Instruments subsidiaries (TI) reserve right make changes their products discontinue product service without notice, advise customers obtain latest version relevant information verify, before placing orders, that information being relied current complete. products sold subject terms conditions sale supplied time order acknowledgment, including those pertaining warranty, patent infringement, limitation liability. warrants performance semiconductor products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques utilized extent deems necessary support this warranty. Specific testing parameters each device necessarily performed, except those mandated government requirements. Customers responsible their applications using components. order minimize risks associated with customer's applications, adequate design operating safeguards must provided customer minimize inherent procedural hazards. assumes liability applications assistance customer product design. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right covering relating combination, machine, process which such semiconductor products services might used. TI's publication information regarding third party's products services does constitute TI's approval, warranty endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
Running Title-Attribute Reference
Contents
Introduction Features Contents DM2052-bq2052-Based Circuit Module Descriptions Programming 2.2.1 Full Capacity 2.2.2 Efficiency Settings Chemistry 2.2.3 Display 2.2.4 Initialization State 2.2.5 Programming Hardware Changes 2.2.6 Pack Voltage
DM2052 Schematic Schematic DM2052 Physical Layouts Board Layout DM2052 Bill Materials Bill Materials DM2052 Performance Specification Summary Circuit Specifications Hardware Software Setup Software Installation Hardware Connection 7.2.1 Connecting DM2052 Battery Pack 7.2.2 Interface Connection Operation Starting Program Initialization 8.2.1 Device Program Settings 8.2.2 Port 8.2.3 Setup Parameters Data Screen Status Screen Screen Data Logging
Chapter Title-Attribute Reference
Running Title-Attribute Reference
Figures
DM202052 Schematic, Part DM202052 Schematic, Part DM2052 Dimensions Layout Performance Specification Summary DM2013H Connection Cells, Sense Resistor, System Load/Charger Initial Data Screen Setup Screen bq2052 Data Screen Status Screen Screen
Tables
Full Capacity Programming Discharge Efficiency Programming Initialization Programming Pack Voltage Programming Bill Materials DM2052-to-EV2200 Connection Resistor Designations Setup Screen Input
Chapter
Introduction
bq2052 complete evaluation system bq2052 Primary Lithium Gauge includes DM2052 circuit module, EV2200 Interface Board Gauge Evaluation, serial cable, Windows-based software. DM2052 circuit module includes bq2052 sense resistor, five LEDs display remaining capacity, other components onboard necessary monitor capacity other critical parameters primary lithium-based system. DM2052 connects directly across cells battery. With EV2200 interface board software, user read bq2052 data registers evaluate functions bq2052 under different discharge conditions.
Topic
Page
Features Contents
Introduction
Features
Features
Contents
Complete evaluation system bq2052 Gauge Preprogrammed DM2052 module quick setup software interface board easy evaluation software that allows data logging system analysis
DM2052 preconfigured circuit module EV2200 interface board evaluation software disks entitled EV2200-HDQ serial cable support documentation
Chapter
DM2052-bq2052-Based Circuit Module
DM2052 circuit module complete compact example solution bq2052 circuit capacity monitoring primary lithium battery packs. DM2052 incorporates bq2052 gauge 0.1-W sense resistor, other components necessary accurately monitor display capacity series lithium primary cells DM2052 includes LEDs display remaining capacity increments programmed capacity. LEDs activated with onboard push-button switch. Contacts DM2052 provide direct connection battery stack (BAT+, BAT-) serial communications port (HDQ). system load connects across BAT+ PK-. DM2052 enters sleep mode during periods discharge activity. module wakes returns full operation response discharge load >100 depressing display switch.
Topic
Page
Descriptions Programming
DM2052-bq2052-Based Circuit Module
Descriptions
Descriptions
HDQ/Serial communications port BAT+/Battery positive/pack positive BAT-/Battery negative PK-/Pack negative
Programming
DM2052 circuit module preconfigured battery-pack chemistry, voltage, pack capacity. circuit module reprogrammed chemistry, capacity, other operating parameters programming resistors board. resistors programming pins high (H), (L), float state initialization. high state programming requires pullup resistor, state requires pulldown resistor, float requires resistors programming pin. shaded area tables indicates bq2052EVM-001 configuration. Please bq2052 data sheet complete description bq2052 programmed.
2.2.1
Full Capacity
Pins bq2052 determine full capacity programmed full count (PFC) DM2052. Resistors R28, R33, R39, R46-48 pins high (H), (L), float state during board initialization. shaded indicates current configuration.
Table 2-1. Full Capacity Programming
Input Settings Sense Resistor Capacity (Ah) 12.0
2.2.2
Efficiency Settings Chemistry
Primary lithium chemistries have different discharge efficiencies. bq2052 determine discharge efficiency factors DM2052. Resistors high (H), (L), float state during board initialization.
Table 2-2. Discharge Efficiency Programming
Efficiency Setting Chemistry LiSO2 (option LiMnO2 LiSO2 (option
Programming
2.2.3
Display
DM2052 comes with onboard LEDs configured bar-graph type display mode setting float state initialization. LEDs indicate remaining battery capacity increments.
2.2.4
Initialization State
DM2052 configured indicate full battery capacity initialization. This done setting high state initialization using resistors R42. float state configures DM2052 come empty. With this selection, user must write battery pack full before shipping pack system.
Table 2-3. Initialization Programming
Initialization Setting Initial Capacity Indication Full Empty Empty
2.2.5
Programming Hardware Changes
following procedure changes configuration DM2052 other (unshaded) options listed tables above: Ensure that DM2052 disconnected from battery. Determine resistors required achieve high (H), (L), float states program inputs. Remove 100k resistors where needed. Place required 100k resistors where needed. Reconnect DM2052 battery pack. EV2200 software used confirm settings reading data registers Setup screen.
2.2.6
Pack Voltage
preconfigure DM2052 pack voltage (number cells), shown Table 2-4.
Table 2-4. Pack Voltage Programming
Part Number bq2052EVM-001 82.5 Nominal Voltage Level End-of-Discharge Level End-of-Discharge Level
DM2052-bq2052-Based Circuit Module
Chapter
DM2052 Schematic
DM2052 schematic shows possible components board various configurations, including configuration resistors. Only those resistors that desired configuration should installed. schematic notes indicate where variations exist.
Topic
Page
Schematic
DM2052 Schematic
Schematic
Schematic
Figure shows DM2052 schematic diagram.
Figure 3-1. DM2052 Schematic, Part
Schematic
Figure 3-2. DM2052 Schematic, Part
DM2052 Schematic
Chapter
DM2052 Physical Layouts
This chapter contains board layout assembly drawings DM2052.
Topic
Page
Board Layout
DM2052 Physical Layouts
Board Layout
Board Layout
Figure shows dimensions, layers, assembly drawing DM2052.
Figure 4-1. DM2052 Dimensions Layout
BOTTOM
TP10
Board Layout
Figure 4-1. DM2052 Dimensions Layout (Continued)
Layer_1
Layer_2
DM2052 Physical Layouts
Chapter
DM2052 Bill Materials
This chapter contains bill materials required DM2052. versions shown accommodate different versions component
Topic
Page
Bill Materials
DM2052 Bill Materials
Bill Materials
Bill Materials
Table 5-1. Bill Materials
REF. C7,C8, R12, R11, R16, R21, R23, R24, R30, R20, R25, R29, R31, R26, R28, R33, R35, R39, R41-R48 R32, R36, D10, D11, D12, D13, DESCRIPTION Capacitor, tantalum, Capacitor, ceramic, ±20%, Capacitor, ceramic, ±20%, Capacitor, ceramic, ±20%, Capacitor, tantalum, Resistor, Resistor, 12.1 Resistor, 16.5 Resistor, 7.50 Resistor, Resistor, Resistor, Resistor, Resistor, Resistor, 0.10 LVR-3, Axial Resistor, Panasonic Panasonic Venkel Panasonic Venkel Venkel Venkel Venkel Venkel Venkel Venkel Venkel Venkel Dale Venkel PART# ECS-H1AX106R ECJ-3YB1E105K C0805X7R250-104MNE ECJ-3VBE104K TAJA335M016R CR0805-10W106JT CR0805-10W1212FT CR0805-10W1652FT CR0805-10W7501FT CR0805-10W9093FT CR0805-10W102JT CR0805-10W9093FT CR0805-10W103JT CR0805-10W1004FT LVR-3 R010 CR0805-10W104JT SIZE 3528 3216 2012 3216 3216
Resistor, Resistor, 82.5 Resistor, Resistor, Resistor, Resistor,
Venkel Venkel Venkel Venkel Venkel Venkel
CR0805-10W1004FT CR0805-10W8252FT CR0805-10W101JT CR0805-10W105JT CR0805-10W515JT CR0805-10W204JT
Resistor, Resistor, Resistor, Diode, dual, switching, BAV70
Venkel Venkel Venkel Zetex
CR0805-10W331JT CR0805-10W103JT CR0805-10W000JT BAV70
SOT-23
Diode, Zener, Diode, LED, green
Zetex Panasonic
BZX84C5V6 LN1371G-(TR)
SOT-23 Gullwing
Transistor, MOSFET, P-Ch Transistor, MOSFET N-Ch Switch, momentary, N.O., mmx1.5 thick
Zetex Natlional/ Samsung Panasonic
ZVP3306F 2N7002 EVQ-PLHA15
SOT-23 SOT-23
Bill Materials
Table 5-1. Bill Materials (Continued)
REF. DESCRIPTION Switch, momentary, N.O., mmx1.5 thick Integrated Circuit, Gauge Amp, Dual, micropower, (LTC1441IS8) Amp, Dual, micropower, (MAX966) Voltage regulator, micropower, Panasonic Benchmarq/ Linear Tech MAXIM Seiko PART# EVQ-PLHA15 bq2052 LTC1441IS8 MAX966ESA S81233SGUP-DQF-T1 SIZE SOIC16 SOIC8 SOIC8 SOT89
DM2052 Bill Materials
Chapter
DM2052 Performance Specification Summary
This chapter summarizes performance specifications DM2052.
Topic
Page
Circuit Specifications
DM2052 Performance Specification Summary
Circuit Specifications
Circuit Specifications
Figure 6-1. Performance Specification Summary
Specification Units
Discharge current Wake-up current Sleep mode current consumption
Chapter
Hardware Software Setup
This section describes install bq2052 software connect different components EVM.
Topic
Page
Software Installation Hardware Connection
Hardware Software Setup
Software Installation
Software Installation
following steps install EV2200-HDQ software: Insert disk into inch floppy drive. Select inch drive using Computer File Manager. Double-click Setup.exe icon. setup program prompts remaining disks installs Windows application group.
Hardware Connection
There three hardware components bq2052 EVM: DM2052 circuit module, EV2200 interface board,
7.2.1
Connecting DM2052 Battery Pack
Figure shows connect DM2052 stack cells system load.
Figure 7-1. DM2013H Connection Cells, Sense Resistor, System Load/Charger
CELLS
BAT-
DM2052
BAT+
LOAD
7.2.2
Interface Connection
following steps configure hardware interface Connect DM2052 based smart battery EV2200 using wire leads Table 7-1. Connect serial cable EV2200 port.
Hardware Connection
Table 7-1. DM2052-to-EV2200 Connection
DM2052 Based Battery EV2200 SMBD/HDQ1 SMBC/HDQ2
bq2052 operation.
Hardware Software Setup
Chapter
Operation
This chapter details operation bq2052 software.
Topic
Page
Starting Program Initialization Data Screen Status Screen Screen Data Logging
Operation
Starting Program
Starting Program
EV2200-xxH from Start|Programs|EV2200-xxH menu sequence. software requests communications port first time after installation. Choose Retry Auto-detection button automatic port configuration. After port detected, software displays bq2052 data screen.
Figure 8-1. Initial Data Screen
data screen show correct information until parameters software initialized.
Initialization
This section describes settingsrequired software properly display data.
8.2.1
Device Program Settings
Select bq2052 option from Options|Device Selection pulldown menu. This selection sets software operate with bq2052. program prompt quit restart program. follow on-screen instructions restart program. Once restarted, software work with bq2052.
8.2.2
Port
Note whether line from DM2052 connected SMBD/HDQ1 SMBC/HDQ2 EV2200. Select HDQ1 SMBD/HDQ1 connection HDQ2 SMBC/HDQ2 connection from Options|HDQ pulldown menu.
8.2.3
Setup Parameters
Select Setup tab.
Initialization
Figure 8-2. Setup Screen
Enter corresponding resistor values Circuit Configuration box. These values saved disk using Save Setup Disk button they automatically called when program loads.
Table 8-1. Resistor Designations Setup Screen Input
Circuit Configuration NAME Rsns Schematic Identifier
Initial Settings programs selected registers bq2052. value entered selected written device depressing Write Settings Device button. screen also displays pins (Prog1) through (Prog6) programmed. Reset Device button initializes bq2052 with programmed settings. Table Data shows discharge efficiency settings selected programming also shows programmed full battery capacity terms (mAh Rsns). programmed full capacity count (PFC) programming pins 2-4.
Operation
Data Screen
Data Screen
After setup parameters entered, return bq2052 data screen bq2052 registers. screen displays names values accessible registers bq2052. values displayed hexadecimal decimal. Polling Frequency sets data polling rate data fields.
Figure 8-3. bq2052 Data Screen
registers written selecting data box, overwriting present value with desired value, pressing ENTER. data must entered same base (decimal hexadecimal) selected base. Note: bq2052 active only when there discharge load when button depressed. bq2052 sleep mode (inactive), data screen will show incorrect data. screen also shows status status flags register FLGS1.
Status Screen
Status Screen
Status screen graphically illustrates bq2052 operation. program shows average current activity well temperature remaining capacity battery under evaluation.
Figure 8-4. Status Screen
Screen
screen allows read write access registers bq2052.
Figure 8-5. Screen
read write location:
Enter address location register Address box. register address selected from pulldown menu.
Operation
Status Screen
Enter data written applicable. Depress Read Write button. Send Break button sends communication timing reset signal bq2013H should depressed each time bq2013H based batter connected EV2200.
program continuously read single address using dwell feature. dwell feature:
Enter address read Dwell Address box. This selected with pulldown menu. dwell frequency Dwell Frequency box. Click Dwell button Dwell Contents box.
contents register will start scroll selected frequency.
Data Logging
data function. logs bq2052 registers data create file
Select File|Start Data from pulldown menu. Enter data filename Press data-log interval Press Close stop data logging select File|Close Data from pulldown menu.
file imported into text editor, spreadsheet, word-processor program.
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