Texas Instruments DV2031S2 Manuel utilisateur

Features

äbq2031 fast-charge control evaluation and

development

äOnboard configuration for fast charge of 2, 3, 4 or 6

lead-acid cells; user-defined option allows other

configurations

äSelectable charge algorithms: Two-Step Voltage,

Two-Step Current, or Pulsed Current

äConstant current (up to 2.5A) and constant voltage

(up to 15V) provided by on-board switch-mode

regulator

äCharge termination by maximum voltage, second

difference of cell voltage, minimum current, or

maximum time-out

äDirect connections for battery, thermistor, and power

supply

äMTO is set for 3.1 hours

äJumper-configurable 3-LED display

General Description

The DV2031S2 Development System provides a develop-

ment environment for the bq2031 Lead-Acid Fast-

Charge IC. The DV2031S2 incorporates a bq2031 in a

buck-type switch-mode regulation mode to provide

fast-charge control for 2, 3, 4, or 6 lead-acid cells.

The DV2031S2 can be configured for three different

charge algorithms with jumpers JP1 and JP3. The

charge algorithms available are

Two-step voltage

Two-step current

Pulsed current

Each algorithm consists of pre-charge qualification, fast

charge, and maintenance charge periods.

Fast charge termination occurs on

Maximum voltage

The second difference of cell voltage (∆2V)

Minimum current

Maximum time-out

The maintenance charge may be configured for either a

regulated float voltage or a pulsed current.

The user provides a DC power supply and batteries

and configures the board for the number of cells, the

minimum current threshold, and the LED display

mode. The board has direct connections for the battery

and the provided thermistor.

Before using the DV2031S2 board, please review the

bq2031 data sheet (SLUS156) and the application note

entitled “Using the bq2031 to Charge Lead-Acid Bat-

teries” (SLUA017).

DV2031S2

SLUU023BDECEMBER 1998 REVISED MARCH 2007 Rev.BBoard

Lead-Acid Charger Development System

Control of On-Board

P-FET Switch-Mode Regulator

Please be aware that three important notices concerning operating limitations, standard warranty, and

liability limitations appear at the end of this data sheet.

Connection Descriptions

TB1

DC+ Charger supply (DC) 30V MAX

DC– Ground from charger supply and low

sideofsystemload

TB2

BAT+ Positive battery terminal

BAT– Negative battery terminal

TEM– Thermistor connection (negative)

TEM+ Thermistor connection (positive)

JP1 QSEL Charge algorithm select

JP2 DSEL Display mode select

JP3 TSEL Charge algorithm select

JP4 IGSEL Minimum current select

JP5 Number of cells

Fixed Configuration

The DV2031S2 board has the following fixed character-

istics:

VCC for the fast charge IC is regulated on-board

from the supply at connector TB1. TB1 can accept a

maximum of 30VDC. The minimum charging volt-

age for two cells is 10VDC, and the minimum

charging voltage for six cells is 22VDC.

LED1 and LED2 indicate charge status.

LED3 indicates a charge-pending or fault condition.

Charge begins on the later application of

1. The battery

2. Supply voltage

The onboard regulator supplies a fast charge cur-

rent IMAX of 2.5A. The fast (bulk) charge voltage

VBLK is set at 2.45V per cell (±1%) and the float

voltage VFLT is set at 2.25V per cell (±1%)

The number of cells can be changed within

board-defined parameters, as described below in

“Jumper-Selectable Configuration.”

The switching frequency of the PWM control is

100kHz.

The regulated current is controlled by the value of

the sense resistor RSNS according to the equation

CHG

SNS

=025.

The value of RSNS (R20 in the schematic) at ship-

ment is 0.10Ω. This resistor can be changed de-

pending on the application. The suggested maxi-

mum charging current IMAX for the bq2031S1

board is 2.5A with an accuracy of ±10%.

The thermistor provided is the Philips

2322–640–63103. With this thermistor connected

between TEM+ and TEM–, the temperature fault

limits are VLTF (low temperature fault) = 0°C, VHTF

(high temperature fault) = 45°C, and VTCO (charge

cutoff) = 47°C.

Jumper-Selectable

Configuration

The DV2031S2 must be configured as follows:

DSEL (JP2) selects the LED display options as de-

scribed in Table 1 on the following page.

TSEL (JP3) and QSEL (JP1) select the charge algo-

rithm as shown in Table 2 on the following page.

IGSEL (JP4) sets IMIN and the Two-Step Current

maintenance charge as a ratio of IMAX.I

COND =

IMAX/5, as shown below:

JP4 IMIN Fixed-Pulse

Average Current

LIMAX 10

COND MAX

210

HIMAX 20

COND MAX

420

None IMAX 30

COND MAX

830

As indicated in the Jumper Configuration Diagram,

JP5 configures the board for the number of

lead-acid cells.

DV2031S2

Rev. B Board

DV2031S2

Rev. B Board

JP1 JP3 Fast Charge Termination Maintenance

LHor LTwo-Step Voltage IMIN or MTO Constant voltage at

VFLT

H L Two-Step Current VBLK or ∆2VorMTO Fixed-pulse current at

ICOND

HH Pulsed Current VBLK (see Note) Fast-charge rate

when VBLK ≤VFLT

Note: Fast-charge termination by MTO is a fault.

Table 2. Charge Algorithms

Mode Charge Action State LED1LED2LED3

Battery absent or over-voltage fault Low Low High

Pre-charge qualification Flash Low Low

Fast charging High Low Low

Maintenance charging Low High Low

Charge pending (temperature out of range) X X Flash

Charging fault X X High

Battery absent or over-voltage fault Low Low High

Pre-charge qualification High High Low

Fast charge Low High Low

Maintenance charging High Low Low

Charge pending (temperature out of range) X X Flash

Charging fault X X High

None

Battery absent or over-voltage fault Low Low High

Pre-charge qualification Flash Flash Low

Fast charge: current regulation Low High Low

Fast charge: voltage regulation High High Low

Maintenance charging High Low Low

Charge pending (temperature out of range) X X Flash

Charging fault X X High

Notes: 1=V

CC;0=V

SS; X = LED state when fault occurred; Flash = 16s low, 16s high.

In the Pulsed Current algorithm, the bq2031 annunciates maintenance when charging current is off and

fast charge whenever charging current is on.

Table 1. bq2031 LED Display Output Summary

Setup Procedure

1. Configure DSEL, TSEL, QSEL, maximum time-out,

and the number of cells.

2. Connect the thermistor to TEM+ and TEM–.

3. Attach the battery pack to BAT+ and BAT–.

4. Connect the charging supply to TB1 (DC+, DC-).

The combined charging and system load should not ex-

ceed the IMAX limit of 2.5A.

DV2031S2

Rev. B Board

JC2031.eps

BAT+

DC-

DC+

TB2

TB1

JP4

2346

H JP1

QSEL DSEL TSEL

JP2

JP3

BAT-

TEM-

TEM+

Cells #

IGSEL

JP5

Jumper Configuration Diagram

TB1

+5V

GND

OUT

VDC D6A

D6B

78L05

1N4148 D2

1N4744

ZTX790A Q1

MTP23P06V

2N3904

D7B

1N5821 D7A

SBL845DI

1000µF

35V

10µF

35V

10µF

0.1µF

bq2031

2031s2-b.eps

LED2/DSEL

LED1/TSEL

LED3/QSEL

MOD

COM

TPWM

TMTO

LED2

LED1

LED3

123123123

FLOAT

BAT

VCOMP

ICOMP

IGSEL

SNS

0.1µF

200µH

R21

20K

C15

0.1µF

C14

470µF

35v

C11

0.01µF

0.1µF

C10

0.1µF

C13

0.1µF

R10

10K

JP3

TSEL JP2

DSEL JP1

QSEL

R11

10K

2N3904

10K

1K R13

0_OHMS

LED3

LED2

LED1

See application note for additional details.

Not used

C12

1000pF

62K

R22

43_OHMS

ZTX790A

R19

464K

R12

49.9K

+5V

R18

1K R2

6.81K

3.74K

JP4

IGSEL

220

10µF

10K

R16

52.3K

R15

102K

R17

154K

R14

261K

R20

0.10

TEM

BAT

TB2

BAT+

BAT-

TEM-

TEM+

2 Cell

JP5

468

1357

3 Cell 4 Cell 6 Cell

10K

100K

1000pF

VDC+

1N5821

SBL845DI

DV2031S2 Board Schematic

DV2031S2

Rev. B Board

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 30 V and the output

voltage range of 21 V and 4.6 V.

Exceeding the specified input range may cause unexpected operation and/or irreversible

damage to the EVM. If there are questions concerning the input range, please contact a TI

field representative prior to connecting the input power.

Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/or

possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to

connecting any load to the EVM output. If there is uncertainty as to the load specification,

please contact a TI field representative.

Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan

60°C. The EVM is designed to operate properly with certain components above 60°C as

long as the input and output ranges are maintained. These components include but are not

limited to linear regulators, switching transistors, pass transistors, and current sense

resistors. These types of devices can be identified using the EVM schematic located in the

EVMUser’sGuide.Whenplacingmeasurementprobesnearthese devicesduringoperation,

please be aware that these devices may be very warm to the touch.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

EVM IMPORTANT NOTICE

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

Thisevaluation kitbeingsold byTI is intendedfor use forENGINEERING DEVELOPMENT OR EVALUATION

PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided

may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective

considerations, including product safety measures typically found in the end product incorporating the goods.

As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic

compatibility and therefore may not meet the technical requirements of the directive.

Shouldthisevaluationkitnotmeetthe specificationsindicatedintheEVMUser’sGuide,thekitmaybereturned

within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE

WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,

IMPLIED,ORSTATUTORY,INCLUDING ANY WARRANTYOF MERCHANTABILITYORFITNESS FOR ANY

PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user

indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products

receivedmaynotbe regulatory compliantoragency certified (FCC, UL, CE,etc.).Due to the openconstruction

oftheproduct,itistheuser’sresponsibilitytotakeanyandallappropriateprecautionswithregardtoelectrostatic

discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE

TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not

exclusive.

TI assumes no liability for applications assistance, customer product design, software performance, or

infringement of patents or services described herein.

Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM

User’sGuidepriortohandlingtheproduct.Thisnoticecontainsimportantsafetyinformationabouttemperatures

and voltages. For further safety concerns, please contact the TI application engineer.

Persons handling the product must have electronics training and observe good laboratory practice standards.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any

machine, process, or combination in which such TI products or services might be or are used.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

ordersandshouldverifythatsuchinformationiscurrentandcomplete.AllproductsaresoldsubjecttoTI’sterms

and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for

their products and applications using TI components. To minimize the risks associated with customer products

and applications, customers should provide adequate design and operating safeguards.

TIdoesnot warrant orrepresent that anylicense, either express orimplied, is grantedunder any TI patent right,

inwhichTIproductsorservicesareused.InformationpublishedbyTIregardingthird–partyproductsorservices

does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.

Use of such information may require a license from a third party under the patents or other intellectual property

of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without

alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction

of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for

such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that

product or service voids all express and any implied warranties for the associated TI product or service and

is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Texas Instruments:

DV2031S2

Table des matières

Autres manuels Texas Instruments Microcontrôleur

Texas Instruments

Texas Instruments MSP430F663x Manuel utilisateur

Texas Instruments

Texas Instruments bq24707EVM Manuel utilisateur

Texas Instruments

Texas Instruments C2000 Piccolo LaunchPad Manuel utilisateur

Texas Instruments

Texas Instruments TIRIS RI-STU-MRD1 Manuel utilisateur

Texas Instruments

Texas Instruments Silicon Errata TMS320F28379S Manuel utilisateur

Texas Instruments

Texas Instruments MSP430 series Manuel utilisateur

Texas Instruments

Texas Instruments ADS1298RECG-FE Manuel utilisateur

Texas Instruments

Texas Instruments TMS370 Series Guide de l'utilisateur

Texas Instruments

Texas Instruments C2000 LED BoosterPack Manuel utilisateur

Texas Instruments

Texas Instruments CC2510 Manuel de programmation

Texas Instruments

Texas Instruments MSP430F67671 Manuel utilisateur

Texas Instruments

Texas Instruments MSP430F5529 LaunchPad Manuel utilisateur

Texas Instruments

Texas Instruments TLC2543 Manuel utilisateur

Texas Instruments

Texas Instruments LOGIC PD ZOOM DM3730 SOM-LV Manuel utilisateur

Texas Instruments

Texas Instruments LaunchPad LP-EM-CC2340R5 Manuel utilisateur

Texas Instruments

Texas Instruments CC3235MODSF SimpleLink Manuel utilisateur

Texas Instruments

Texas Instruments MSP430F6733 Manuel utilisateur

Texas Instruments

Texas Instruments CC3235 SimpleLink Series Manuel du produit

Texas Instruments

Texas Instruments CC2540 Manuel utilisateur

Texas Instruments

Texas Instruments Serial Programming Adapter MSP430 Manuel utilisateur

Texas Instruments

Texas Instruments CC3100 SimpleLink Manuel utilisateur

Texas Instruments

Texas Instruments LaunchPad MSP430G2553 Manuel utilisateur

Texas Instruments

Texas Instruments PurePath CC85XXDK-HEADSET Manuel utilisateur

Texas Instruments

Texas Instruments TPS2379 EVM Manuel utilisateur

Manuels Microcontrôleur populaires d'autres marques

AMS

AMS AS7261 Demo Kit Manuel utilisateur

Novatek

Novatek NT6861 Manuel utilisateur

Espressif Systems

Espressif Systems ESP8266 SDK Guide de configuration

Nuvoton

Nuvoton ISD61S00 ChipCorder Mode d’emploi

STMicrolectronics

STMicrolectronics ST7 Assembler Linker Manuel utilisateur

Lantronix

Lantronix Intrinsyc Open-Q 865XR SOM Manuel utilisateur

NEC

NEC 78GK0S/K 1+ Series Instructions d'installation et d'utilisation

Mikroe

Mikroe SEMITECH N-PLC Click Instructions d'installation et d'utilisation

Intel

Intel Agilex Manuel utilisateur

Cypress

Cypress CY4607 HX2VL Manuel utilisateur

DIGITAL-LOGIC

DIGITAL-LOGIC MICROSPACE Manuel utilisateur

CYPRES

CYPRES CY14NVSRAMKIT-001 Manuel utilisateur

Espressif Systems

Espressif Systems ESP8266EX Mode d'emploi

Abov

Abov AC33M8128L Manuel utilisateur

Laird

Laird BL654PA Manuel utilisateur

Silicon Laboratories

Silicon Laboratories C8051F800 Manuel utilisateur

Energy micro

Energy micro EFM32 Giant Gecko Starter Kit Manuel utilisateur

Mikroe

Mikroe click Proximity 2 Manuel utilisateur