User’s Guide
January 2003 PMP Portable Power
SLUU132A
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
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
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. T o minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third–party products or services
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
Copyright 2003, Texas Instruments Incorporated
EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EV ALUA TION
PURPOSES ONL Y 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.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned
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, OR ST ATUT ORY, INCLUDING ANY WARRANTY OF MERCHANT ABILITY OR FITNESS 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
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction
of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic
discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER P ARTY 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’s Guide prior to handling the product. This notice contains important safety information about temperatures
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
Copyright 2003, Texas Instruments Incorporated
EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of 5.6 V and the output voltage
range of 0 V and 4.25 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.
Applying loads outside of the specified output range may result in unintended operation and/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.
During normal operation, some circuit components may have case temperatures greater than
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 EVM User’s Guide.
When placing measurement probes near these devices during operation, please be aware
that these devices may be very warm to the touch.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated
Contents
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Background 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Performance Specification Summary 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 T est Summary 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 I/O and Jumper Connections 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Test Procedure 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 Equipment 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 Equipment Setup 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3 Procedure 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Schematic, Physical Layouts, and Bill of Materials 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Physical Layouts 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 Board Layout 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Bill of Materials 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Reference 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures
2–1 Load Test Board 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 EVM Schematic Diagram 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 Assembly View 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–4 Top Layer 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 Bottom Layer 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
1–1 Performance Specification Summary 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 Bill of Materials 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v
Contents
vi
Chapter 1
Introduction
This user’s guide describes the bq24013 (bqTINY) evaluation module. The
EVM provides a convenient method for evaluating the performance of a
charge-management solution for portable applications using the bq24013
product family. A complete designed and tested charger is presented. The
charger is designed to deliver up to 1.0 A of continuous charge current, but is
programmed for 0.7 A, for single-cell Li-Ion or Li-Pol applications using a dc
power supply.
Topic Page
1.1 Background 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Performance Specification Summary 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . .
bqTINY is a trademark of Texas Instruments.
1-1
Background
1.1 Background
The bqTINY series are highly integrated Li-Ion and Li-Pol linear
charge-management devices targeted at space-limited portable applications.
In a small package, the bqTINY series offer integrated PowerFET and current
sensor, reverse blocking diode, high-accuracy current and voltage regulation,
charge status, and charge termination.
The bqTINY charges the battery in three phases: conditioning, constant
current, and constant voltage. Charge terminates on the basis of minimum
current. An internal charge-timer provides backup safety for charge
termination. The bqTINY automatically restarts the charge if the battery
voltage falls below an internal threshold and automatically enters sleep mode
when V
supply is removed.
CC
In addition to the standard features, different versions of the bqTINY offer a
multitude of additional features. These features include temperature-sensing
input for detecting hot or cold battery packs, power good (PG
the presence of the ac adapter, a TTL-level charge enable input (CE
) output indicating
) to disable
or enable the charge process, and a TTL-level timer and termination enable
) input to disable or enable the fast-charge timer and charge termination.
(TTE
1.2 Performance Specification Summary
This section summarizes the performance specifications of the EVM.
Table 1–1 gives the performance specifications of the EVM.
Table 1–1.Performance Specification Summary
Specification Test Conditions Min Typ Max Units
Input dc voltage, V
Battery charge current, I
Power dissipation (V
†
This input voltage maximum is a function of the maximum allowable power dissipation on the IC. The current level is programmed for 0.7 A. If the programmed charge is changed, then the maximum input voltage must be adjusted.
P
= 1.5 Watt = I
maxIC
I(DC)
O(CHG)
CHG(VDC+
– V
BAT+
See note 0.7 1 A
–V
(DC+)
).
(BAT+)
) × I
(CHG)
V
+0.5 5.0 5.2
REG
†
1.5 W
V
1-2
Chapter 2
Test Summary
This chapter describes the test setups used and the tests performed in evaluating the EVM.
Setup:
pack and a 5-VDC, 1-A power source to provide input power. The test setup
connections and jumper setting selections are configured for a stand-alone
evaluation but can be changed to interface with external hardware, such as a
microcontroller.
Topic Page
The bq24013 EVM board requires a single-cell Li-Ion or Li-Pol battery
2.1 I/O and Jumper Connections 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 T est Procedure 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Summary
2-1
I/O and Jumper Connections
2.1 I/O and Jumper Connections
Jack Connect To:
J1–DC+ Power supply positive, preset to 5.0VDC, 1-A current limit
J1–DC– Power supply ground
J2–BAT+ Positive battery pack terminal
J2–BAT– Negative battery pack terminal
J2–TTE NC required—pulled down with 10 kΩ resistor on EVM
J2–BAT– NC
J3–STAT1 External hardware if J4-EXT is jumpered (not jumpered from factory)
J3–STAT2 External hardware if J5-EXT is jumpered (not jumpered from factory)
J3–DC– Return for J3 signals
J3–/CE NC required—pulled down with 10-kΩ resistor on EVM
J4 (Jumper) STAT1 indication location – LED (EVM) | EXT
J5 (Jumper) STAT2 indication location – LED (EVM) | EXT
2.2 Test Procedure
Set up the evaluation board as described above, by making the necessary I/O
connections and jumper selections. Before test and evaluation, it is
important to verify that the maximum power dissipation on the IC is not
exceeded: P
(MAX)
= 1.5 watts.
1) Turn on the power supply, which was preset to 5.0 VDC and 1 A for the
current-limit setting.
2) The bq24013 enters preconditioning mode if the battery is below the
V
(LOWV)
a low current (typically I
voltage reaches the V
threshold. In this mode, the bq24013 precharges the battery with
O(CHG)
(LOWV)
/10 = 0.7A/10 = 70 mA) until the battery
threshold or until the precharge timer
expires. If the timer expires, then the charge current is terminated, the
bq24013 enters fault mode, and both LEDs turn off. Toggling input power
or battery replacement resets fault mode.
3) Once the battery voltage is above the V
(LOWV)
threshold, the battery
enters fast-charge mode. This EVM is programmed for 0.7 A of
fast-charging current.
4) Once the battery reaches voltage regulation (4.2 V), the current tapers
down as the battery reaches its full capacity.
5) The battery remains at the fast-charge mode until the fast-charge timer
expires, the charge taper time expires, or the charge termination threshold
is reached.
2-2
6) If the battery discharges to the recharge threshold, the charger starts fast
charging.
In place of a battery, a source meter that can sink current can easily be
adjusted to test each mode.
Test Procedure
Another way to briefly see each mode on a scope is to connect a 1-mF
capacitor and a 10-kΩ resistor on the output in place of a battery to observe
the power-up and cycling between voltage regulation and fast charge via the
refresh threshold.
Note:
Because of the battery-detection circuit, it is not possible to switch-in static
load resistors to jump between regulation and constant-current modes. An
alternate procedure described below uses a dynamic load to replace the
battery circuit. That procedure allows testing of each mode.
This is an alternative way of testing the EVM using a dynamic load board in
place of a battery . The circuit is adjusted to work with the displayed parts and
their inherent thresholds. The sequence of the test procedure is important
because of the active battery-detection circuit, refresh feature, and precharge
and fast-charge current levels (switching load in or out has different results in
different modes). No damage should occur , but results might be different than
anticipated if the procedure is altered.
2.2.1 Equipment
1) Power source: current-limited 5-V lab supply with its current limit set to
1.0 A ±0.1 A
2) Two Fluke 75, equivalent or better
3) Oscilloscope – TDS220 or better
4) Load test board (Figure 2–1)
Figure 2–1.Load Test Board
Power Supply
5.1 V ± 0.1 V
Current Limit
1 A ± 0.1 A
+
–
DMM
UUT
bq24013 EVM
BAT+
DC+
DC–
BAT–
DMM
Volts
BAT+
BAT–
S4
C1
2000 µF
25 V
S1
R3
3 kΩ
0.25 W
R6
10 kΩ
0.25 W
S2
R4
66.5 Ω
0.25 W
8
7 6 5
44
3 2 1
R5
66.5 Ω
0.25 W
Q1
Si4410DY
10 kΩ
0.25 W
R7
S3
D1
1N4148
8 7 6 5
3 2 1
R1
5 Ω
5 W
Q2
Si4410DY
Test Summary
2-3
Test Procedure
2.2.2 Equipment Setup
1) Connect the load board to the BAT+ and BAT–. Set SW1 through SW4 in
2) Connect a voltage meter to the BAT+/BAT– output to monitor the output
3) Set the lab supply for 5.1 V ±0.1VDC, 1.0 ±0.1 A current limit, and then turn
4) Install shunt jumpers on the LED pins 1 and 2 of each header J4 and J5.
2.2.3 Procedure
1) Ensure that equipment setup steps are followed. (Switches should be in
2) Verify that output voltage BAT+ charges up to between 2.5 V and 2.9 V,
the closed position.
voltage (range 0 to 5 V).
off the supply. Connect the source supply to a current meter and to J1,
noting polarity . (Y ou may use an internal source current meter if it has 5%
or better accuracy.)
the closed position, shunts installed, and power source set to 5.1 V/±0.1
V.) Turn on the power source.
and the red LED (D1) is lit.
3) Open switch SW2 and then close swtch SW2.
4) Verify that output voltage BAT+ settles between 3.2 V and 3.95 V.
5) Verify that the input current is between 0.69 A and 0.75 A.
6) Open switch SW3.
7) Verify that the input current is between 100 mA and 150 mA.
8) Verify the output voltage BAT+ is between 4.150 V and 4.250 V.
9) Open switch SW2.
10) Verify with a scope (250 ms/div, 1 V/div) that output BAT+ charges and
discharges are between the maximum limits of 3 V and 4.35 V, with a
period of between 600 ms and 850 ms.
1 1) V erify that the LEDs flash between RED (D1) and GREEN (D2), mostly on
green.
12) Open switch SW4, and verify that D1 and D2 are off.
13) Verify , with a scope on BA T+, a square wave between the maximum limits
of 1.3 VDC and 4.35 VDC and a frequency between 3.5 Hz and 4.5 Hz.
This step verifies operation of the battery-detect circuit and the
internal-timer oscillator.
14) Turn off the power source and set all switches, SW1 through SW4, closed.
2-4
15) The EVM is good if all tests are passed.
Chapter 3
Schematic, Physical Layouts, and
Bill of Materials
This chapter contains the schematic diagram, the board layouts and assembly
drawings, and the bill of materials required for the EVM.
Topic Page
3.1 Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Physical Layouts 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Bill of Materials 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Reference 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schematic, Physical Layouts, and Bill of Materials
3-1
3-2
DC+
DC–
Schematic
3.1 Schematic
Figure 3–1.EVM Schematic Diagram
U1
J1
1
2
R1
1.5 kΩ
D1
Red
1
2
R2
1.5 kΩ
2
C3
0.47 µF
3
J5
D2
Green
3
J4
1
bq24013
110
29
38
STAT1
47
56
PWP
11
OUTIN
BATVCC
TTE
ISETVSS
CESTAT2
R3
1
R6
10 kΩ
C1
1 µF
10 V
R4
1.13 kΩ
TP1
TP2
4
BAT+
3
BAT–
2
TTE
C2
1 µF
1
10 V
R5
10 kΩ
1
BAT–
J2
J3
1
STAT1
2
STAT2
3
DC–
4
CE
1
LED EXT
STAT1 JUMPER
Not installed
LED EXT
STAT2 JUMPER
3.2 Physical Layouts
3.2.1 Board Layout
Figure 3–2 shows the assembly view of the EVM. Figure 3–3 shows the top
layer. Figure 3–4 shows the bottom layer.
Figure 3–2.Assembly View
Physical Layouts
Schematic, Physical Layouts, and Bill of Materials
3-3
Physical Layouts
Figure 3–3.Top Layer
Figure 3–4.Bottom Layer
3-4
Bill of Materials
3.3 Bill of Materials
Table 3–1 lists materials required for the EVM.
Table 3–1.Bill of Materials
Ref
Item# bq24013
1 0 C1 Capacitor, ceramic, X5R, 1 µF, 10 V 805 Panasonic ECJ-2YB1A105K
2 1 C2 Capacitor, ceramic, X5R, 1 µF, 10 V 805 Panasonic ECJ-2YB1A105K
3 1 C3 Capacitor, ceramic, X7R, 0.47 µF, 16 V 805 Panasonic ECJ-2YB1C474K
4 1 D1 Diode, LED, red, 1.8 V , 20 mA, 20 mcd 603 Lite-On 160-1181-1-ND
5 1 D2 Diode, LED, green, 2.1 V , 20 mA, 6 mcd 603 Lite-On 160-1183-1-ND
6 1 J1 T erminal block, 2 pin, 6 A, 3,5 mm 0.27 × 0.25 OST ED1514
7 2 J2, J3 Terminal block, 4 pin, 6 A, 3,5 mm 0.55 × 0.25 OST ED1516
8 2 J4, J5 Header, 3 pin, 100 mil spacing, (36-pin
9 2 R1, R2 Resistor, chip, 1.5 kΩ, 1/16 W , 1% 603 Std Std
10 0 R3 Resistor, chip, 1 MΩ, 1/16 W, 1% 602 Std Std
11 2 R5, R6 Resistor, chip, 10 kΩ, 1/16 W, 1% 603 Std Std
12 1 R4 Resistor, chip, 1.3 kΩ, 1/16 W, 1% 603 Std Std
13 1 U1 IC, single Li-Ion/Li-Polymer, charge
14 2 — Shunt, 100-mil, black 0.100 3M 929950-00
15 1 — PCB, bq24010/2, 1.6 in × 1.3 in × 0.031 in Any SLUP185
Notes: 1) These assemblies are ESD sensitive; ESD precautions must 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) Reference designators marked with an asterisk (**) cannot be replaced by substitutes. All other components can
be replaced with equivalent manufacturer components.
Des
strip)
manager
Description Size MFR Part Number
0.100 × 3 Sullins PTC36SAAN
MLP10 TI bq24013DRC
3.4 Reference
1) bq2401x data sheet (SLUS530)
Schematic, Physical Layouts, and Bill of Materials
3-5
Loading...