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User's Guide
SLUU396A – January 2010 – Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous
Switch-Mode Charger
1
2
3
4
5
6
3
4
1
2
3
4
5
1
2
6
7
8
9
10
Contents
Introduction
1.1
..................................................................................................................
EVM Features
......................................................................................................
1.2
1.3
1.4
General Description
I/O Description
................................................................................................
......................................................................................................
1.4 Controls and Key Parameters Setting
......................................................................
1.5
Recommended Operating Conditions
Test Summary
...........................................................................
...............................................................................................................
2.1
2.2
2.3
Definitions
...........................................................................................................
Equipment
...........................................................................................................
Equipment Setup
...................................................................................................
2.4
Procedure
...........................................................................................................
PCB Layout Guideline
......................................................................................................
Bill of Materials, Board Layout and Schematics
4.1
Bill of Materials
........................................................................
.....................................................................................................
Board Layout
Schematics
...............................................................................................................
.................................................................................................................
List of Figures
Original Test Setup for HPA422 (bq2461x/bq2463x EVM)
............................................................
Top Layer
...................................................................................................................
2 nd Layer
....................................................................................................................
3 rd Layer
.....................................................................................................................
Bottom Layer
...............................................................................................................
Top Assembly
..............................................................................................................
Bottom Assembly
..........................................................................................................
Top Silkscreen
.............................................................................................................
Bottom Silkscreen
.........................................................................................................
bq2461x/bq2463x EVM Schematic
.....................................................................................
List of Tables
I/O Description
...............................................................................................................
Controls and Key Parameters Setting
....................................................................................
Recommended Operating Conditions
....................................................................................
Bill of Materials
..............................................................................................................
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
1
Introduction
1 Introduction
Jack
J1–DCIN
J1–GND
J2–VEXT
J2–GND
J2–TTC
J3–ACSET
J3–ISET1
J3–ISET2
J3–GND
J–PG
J4–CHGEN
J4–VREF
J4–TS
J5–VSYS
J5–VBAT www.ti.com
1.1
EVM Features
• Evaluation Module For bq2461x/bq2463x
• High Efficiency Synchronous Buck Charger
• User-programmable up to 26V Battery Voltage
• AC Adapter Operating Range 5 V–28 V
• LED Indication for Control and Status Signals.
• Test Points for Key Signals Available for Testing Purpose. Easy Probe Hook-up.
• Jumpers Available. Easy to Change Connections.
1.2
General Description
The bq2461x is highly integrated Li-ion or Li-polymer switch-mode battery charge controllers. The bq2463x is highly integrated switch-mode battery charge controllers designed specifically to charge
Lithium Phosphate battery chemistries.
They offer a constant-frequency synchronous PWM controller with high accuracy charge current and voltage regulation, adapter current regulation, termination, charge preconditioning, and charge status monitoring,
The bq2461x/bq2463x charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reches a minimum user-selectable level. A programmable charge timer provides a safety backup for charge termination. The bq2461x/bq2463x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.
The dynamic power management (DPM) function modifies the charge current depending on system load conditions, avoiding ac adapter overload.
High accuracy current sense amplifiers enable accurate measurement of the ac adapter current, allowing monitoring of overall system power.
For details, see bq24610 and bq24617 ( SLUS892 ), bq24616 ( SLUSA49 ) and bq2463x ( SLUS894 ) data sheets.
1.3
I/O Description
Table 1. I/O Description
Description
AC adapter, positive output
AC adapter, negative output
External power supply, positive output
External power supply, negative output
Timer capacitor pin
Input current program pin
Charge Current Program Pin
Pre-charge/Termination program pin
Ground
Power Good (active low)
Charge enable
IC reference voltage VREF
Temperature Qualification Voltage Input
Connected to system
Connected to battery pack
2 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
Introduction
Jack
J5–GND
JP1–LOW
JP1–TTC
JP1–HI
JP2–HI
JP2–LEDPWR
JP3–VREF
JP3–VPULLUP
JP3–EXT
JP4–VCC
JP4–VCOM
JP5–HI
JP5–CHGEN
Table 1. I/O Description (continued)
Description
Ground
Ground
Timer capacitor pin
Pull-up voltage source
Pull-up voltage source
LED Pull-up power line
IC reference voltage VREF
Pull-up voltage source
External voltage supply from J2
Pull-up voltage source of ACDRV and BATDRV LED logic circuit
Q7 and Q11 common source
Pull-up voltage source
Charge enable
1.4
1.4 Controls and Key Parameters Setting
Jack
JP1
JP2
JP3
JP4
JP5
Table 2. Controls and Key Parameters Setting
Description
TTC setting
1-2 : Connect TTC to GROUND (Disable termination and the safety timer)
2-3 : Connect TTC to VPULLUP (Allow termination, but disable the safety time)
2 floating: Allow termination, CTTC sets the safety timer
The pull-up power source supplies the LEDs when on.
LED has no power source when off.
VPULLUP setting
1-2 : Connect VPULLUP to VREF
2-3 : Connect VPULLUP to VEXT
The pull-up voltage source of ACDRV and BATDRV LED logic circuit.
CHGEN setting
Jumper on: CHGEN to VPULLUP
Jumper off: CHGEN is set to low by pull down resistor.
Factory Setting
Jumper on 2-3 (TTC and VPULLUP)
Jumper On
Jumper On 1-2 (VPULLUP and
VREF)
Jumper on
Jumper Off
1.5
Recommended Operating Conditions
Table 3. Recommended Operating Conditions
Description Min Typ Symbol
Supply voltage, V
IN
Input voltage from ac adapter input 5 24
Max
24(617)
28
(610/616/63x)
Unit
V
Battery voltage, V
BAT
Supply current, I
AC
Charge current, I chrg
Operating junction temperature range, T
J
Voltage applied at VBAT terminal of J5
Maximum input current from ac adapter input
Battery charge current
2.1 (61x)
1.8 (63x)
0
2
0
21 (61x)
18 (63x)
3
4.5
8
125
V
A
A
°C
The bq2461x/bq2463x EVM board requires a regulated supply approximately 0.5 V minimum above the regulated voltage of the battery pack to a maximum input voltage of 28 VDC.
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
3
Test Summary www.ti.com
R25 and R28 can be changed to regulate output.
V
BAT
= 2.1V × [1+ R25/R28]; for bq2461x;
V
BAT
= 1.8V × [1+ R25/R28]; for bq2463x;
Adjust the input voltage as required. Output set to operate at 21V (bq2461x) or 18V (bq2463x) from the factory.
2 Test Summary
2.1
Definitions
This procedure details how to configure the HPA422 evaluation board. On the test procedure the following naming conventions are followed. See the HPA422 schematic for details.
VXXX:
LOADW:
V(TPyyy):
V(Jxx):
V(TP(XXX)):
External voltage supply name (VADP, VBT, VSBT)
External load name (LOADR, LOADI)
Voltage at internal test point TPyyy. For example, V(TP12) means the voltage at TP12
Voltage at jack terminal Jxx.
Voltage at test point "XXX". For example, V(ACDET) means the voltage at the test point which is marked as "ACDET".
V(XXX, YYY): Voltage across point XXX and YYY.
I(JXX(YYY)): Current going out from the YYY terminal of jack XX.
Jxx(BBB):
Jxx ON:
Terminal or pin BBB of jack xx
Internal jumper Jxx terminals are shorted
Jxx OFF: Internal jumper Jxx terminals are open
Jxx (-YY-) ON: Internal jumper Jxx adjacent terminals marked as "YY" are shorted
Measure: → A,B Check specified parameters A, B. If measured values are not within specified limits the unit under test has failed.
Observe → A,B Observe if A, B occur. If they do not occur, the unit under test has failed.
Assembly drawings have location for jumpers, test points and individual components.
2.2
Equipment
2.2.1
Power Supplies
Power Supply #1 (PS#1): a power supply capable of supplying 30-V at 5-A is required.
Power Supply #2 (PS#2): a power supply capable of supplying 5-V at 1-A is required.
Power Supply #3 (PS#3): a power supply capable of supplying 5-V at 1-A is required.
2.2.2
LOAD #1
A 30V (or above), 5A (or above) electronic load that can operate at constant current mode
2.2.3
LOAD #2
A Kepco bipolar operational power supply/amplifier, 0 ±30V (or above), 0 ±6A (or above).
2.2.4
Oscilloscope
Tektronix TDS3054 scope or equivalent, 10X voltage probe.
4 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
2.2.5
METERS
Seven Fluke 75 multimeters, (equivalent or better)
Or: Four equivalent voltage meters and three equivalent current meters.
The current meters must be capable of measuring 5A+ current
Test Summary
2.3
Equipment Setup
1. Set the power supply #1 for 0V ± 100mVDC, 5.0 ± 0.1A current limit and then turn off supply.
2. Connect the output of power supply #1 in series with a current meter (multimeter) to J1 (VIN, GND).
3. Connect a voltage meter across J1 (VIN, GND).
4. Set the power supply #2 for 0V ± 100mVDC, 1.0 ± 0.1A current limit and then turn off supply.
5. Connect the output of the power supply #2 to J4 and J5 (TS, GND).
6. Connect Load #1 in series with a current meter to J5 (SYS, GND). Turn off Load #1
7. Connect Load #2 in series with a current meter to J5 (BAT, GND). Turn off Load #2.
8. Connect a voltage meter across J5 (BAT, GND).
9. Connect an oscilloscope's probe across J5 (BAT, GND)
10. Connect a voltage meter across J5 (SYS, GND).
11. JP1 (TTC and HI): ON, JP2: ON, JP3 (VPULLUP and VREF): ON, JP4: ON, JP5: OFF.
After the above steps, the test setup for HPA422 is shown in
Power supply #1
Iin
I
V
J1 bq24610/616/617/30 EVM
HPA422
ACPWR
TP1
ACPWR
PGND
PH
TP2
J3
ACSET
ISET1
ISET2
GND
J2
VEXT
GND
TTC
VCC
VREF
VEXT
HI
L
O
JP3
JP1
JP2
U1
JP4
APPLICATION CIRCUIT
JP5
/ACDRV /BATDRV
CE PG /STAT1 /STAT2
TP12
SYS
SYS
BAT
TP9 PGND
J5
VBAT
PG
STAT1
VREF
TS
J4
Isys
V
V Ibat
I
I
Load
#1
Load
#2
Oscilloscope
I
Power sup ply #2
Figure 1. Original Test Setup for HPA422 (bq2461x/bq2463x EVM)
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
5
Test Summary
2.4
Procedure
www.ti.com
2.4.1
AC Adapter Detection Threshold
1. Make sure EQUIPMENT SETUP steps are followed. Turn on PS#2.
2. Turn on PS#1
Measure → V(J5(SYS)) = 0 ± 500mV
Measure → V(TP(VREF)) = 0V ± 1000mV
Measure → V(TP(REGN)) = 0V ± 500mV
3. Increase the output voltage on PS#1 until D5 (PG) on but do not exceed 5V. Set the power supply #2 to 1.8V ± 100mVDC
Measure → V(J1(VIN)) = 4.5V ± 0.5V
Measure → V(J5(SYS)) = 4.5V ± 0.5V
Measure → V(TP(VREF)) = 3.3V ± 200mV
Measure → V(TP(REGN)) = 0V ± 500mV
Measure → D4 (/ACDRV) on, D5 (PG) on
2.4.2
Charger Regulation Voltage
1. Increase the voltage of PS#1 until V(J1(VIN)) = 24V ± 0.1V.
Measure → V(J5(BAT, GND)) = 0V ± 1V
2. Put JP5 on (Enable the charging).
Observe → D3 (CE) on.
Measure → Peak V(J5(BAT)) = 21.0V ± 1V (bq2461x)
Measure → Peak V(J5(BAT)) = 18.0V ± 1V (bq2463x)
Measure → V(TP(REGN)) = 6V ± 500mV
2.4.3
Charge Current and AC Current Regultion (DPM)
1. Take off JP5 (Disable the charging).
2. Connect the Load #2 in series with a current meter (multimeter) to J5 (BAT, GND). Make sure a voltage meter is connected across J5 (BAT, GND). Turn on the Load #2. Set the output voltage to 12V
(bq2461x) or 2V (bq2463x).
3. Connect the output of the Load #1 in series with a current meter (multimeter) to J5 (SYS, GND). Make sure a voltage meter is connected across J5 (SYS, GND). Turn on the power of the Load #1. Set the load current to 3.0A ± 50mA but disable the load #1. The setup is now like
for HPA422. Make sure Ibat = 0A ± 10mA and Isys = 0A ± 10mA.
4. Put JP5 on (Enable the charging).
Observe → D3 (CE) on
Measure → Ibat = 300mA ± 200mA (bq2461x)
Measure → Ibat = 125mA ± 60mA (bq2463x)
Observe → D7 (STAT1) on; D8 (STAT2) off.
5. Set the Load #2 output voltage to 16.5V.
Measure → Ibat = 3000mA ± 300mA
Observe → D7 (STAT1) on; D8 (STAT2) off.
6. Enable the output of the Load #1
Measure → Isys = 3000mA ± 200mA, Ibat = 1400mA ± 500mA, Iin = 4000mA ± 500mA
7. Turn off the Load #1.
Measure → Isys = 0 ± 100mA, Ibat = 3000mA ± 300mA.
8. Increase the Load #2 output voltage from 16.5V to 22V (61x) or 19V (63x).
Measure → Isys = 0 ± 100mA, Ibat = 0mA ± 100mA.
Observe → D7 (STAT1) off; D8 (STAT2) on.
9. Decrease the Load #2 output voltage back to 16.5V.
Observe → D7 (STAT1) on; D8 (STAT2) off.
6 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger SLUU396A – January 2010 – Revised July 2010
Copyright © 2010, Texas Instruments Incorporated
www.ti.com
PCB Layout Guideline
2.4.4
Charger Cut-Off by Thermistor
1. Slowly increase the output voltage of PS2 until Ibat = 0 ± 10mA.
Measure → V(J4(TS)) = 2.44V ± 200mV
Observe → D7 (STAT1) off; D8 (STAT2) off.
2. Slowly decrease the output voltage of PS2 to 1.4V ± 0.1V.
Measure → V(J4(TS)) = 1.4V ± 100mV
Measure → Ibat = 3000mA ± 300mA (bq24610/617)
Measure → Ibat = 0mA ± 100mA (bq24616)
Measure → Ibat = 375mA ± 150mA (bq2463x)
Observe → D7 (STAT1) on; D8 (STAT2) off (bq24610/617/630)
Observe → D7 (STAT1) off; D8 (STAT2) off (bq24616)
3. Slowly decrease the output voltage of PS2.
Charge will resume. Continue to decrease the output voltage of PS2 slowly until Ibat = 0 ±10mA.
Measure → V(J4(TS)) = 1.14V ± 200mV
Observe → D7 (STAT1) off; D8 (STAT2) off.
4. Slowly increase the output voltage of PS2 to 1.8V ± 100mV.
Measure → Ibat = 3000mA ± 200mA
Observe → D7 (STAT1) on; D8 (STAT2) off.
2.4.5
Power Path Selection
1. Take off JP5 (Disable the charging)
Observe → D3 (CE) off; D7 (STAT1) off.
2. Set JP3 Jumper On 2-3 (VPULLUP and VEXT). Connect the output of the power supply #3 to
J2(VEXT, GND). Set the power supply #3 for 3.3V ± 200mVDC, 1.0 ± 0.1A current limit.
3. Set the Load #2 output voltage to 16.5V ± 500mV.
4. Measure → V(J5(SYS)) = 24V ± 1V (adapter connected to system)
Observe → D4 (ACDRV) on, D6 (BATDRV) off, D5 (PG) on, D7 (STAT1) off, D8 (STAT2) off.
5. Turn off PS#1.
6. Measure → V(J5(SYS)) = 16.5V ± 0.5V (battery connected to system)
7. Observe → D4 (ACDRV) off, D6 (BATDRV) on, D5 (PG) off, D7 (STAT1) off, D8 (STAT2) off.
8. Turn off power supply #2 and #3. Set JP3 on 1-2 (VPULLUP and VREF).
3 PCB Layout Guideline
1. It is critical that the exposed power pad on the backside of the bq2461x/bq2463x package be soldered to the PCB ground. Make sure there are sufficient thermal vias right underneath the IC, connecting to the ground plane on the other layers.
2. The control stage and the power stage should be routed separately. At each layer, the signal ground and the power ground are connected only at the power pad.
3. AC current sense resistor must be connected to ACP and ACN with a Kelvin contact. The area of this loop must be minimized. The decoupling capacitors for these pins should be placed as close to the IC as possible.
4. Charge current sense resistor must be connected to SRP, SRN with a Kelvin contact. The area of this loop must be minimized. The decoupling capacitors for these pins should be placed as close to the IC as possible.
5. Decoupling capacitors for DCIN, VREF, VCC, REGN should make the interconnections to the IC as short as possible.
6. Decoupling capacitors for BAT must be placed close to the corresponding IC pins and make the interconnections to the IC as short as possible.
7. Decoupling capacitor(s) for the charger input must be placed close to top buck FET's drain and bottom buck FET’s source.
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
7
Bill of Materials, Board Layout and Schematics
4 Bill of Materials, Board Layout and Schematics
www.ti.com
4.1
Bill of Materials
Table 4. Bill of Materials
0
1
1
0
0
0
0
6
2
1
0
6
3
0
1
0
1
6
0
0 bq24610-001 bq24617-002 Bq24630-003 bq24616-004 Value
1
0
0
1
0
0
0
0 bq24610RGE bq24617RGE
RefDes
U1
U1
0
0
1
6
1
0
1
6
0
1
1
6 bq24630RGE U1 bq24616RGE U1
0.1uF
0.1uF
C3
Description
Charger Controller IC
Charger Controller IC
Charger Controller IC
Charger Controller IC
Capacitor, Ceramic, 16V, X7R, 5%,
C7,C8,C13,C1 Capacitor, Ceramic, 16V, X7R, 10%
8,C19,C33
6 6 6 6 0.1uF
1
0
3
0
2
1
0
6
1
0
3
0
2
1
0
6
1
0
3
0
2
1
0
6
22p
1.0uF
1.0uF/50V
2.2uF/50V
10uF/50V
C4,C5,C16,C1 Capacitor, Ceramic, 50V, X7R, 10%
7,C24,C26
C22 Capacitor, Ceramic, 50V, X7R, 10%
C9,C21,C30,C Capacitor, Ceramic, 50V, X7R, 10%
31
C1,C6,C15
C34
Capacitor, Ceramic, 16V, X7R, 20%
Capacitor, Ceramic, 50V, X7R, 10%
C12,C14
C2
C32
Capacitor, Ceramic, 50V, X5R, 20%
Capacitor, Ceramic, 50V, X7R, 20%
Capacitor, Ceramic, 50V, X7R, 20%
C10,C11,C20, Capacitor, Ceramic, 50V, Y5V,
C23,C28,C29 -20/+80%
0
3
0
0
0
0
6
0
1
1
0
3
0
0
0
0
6
0
1
0
1
3
0
0
0
0
6
0
1
1
0
3
Size
603
603
603
603
603
805
805
1206
1206
1206
1812
Part Number
QFN-24 (RGE) bq24610RGE TI
QFN-24 (RGE) bq24617RGE TI
QFN-24 (RGE) bq24630RGE TI
QFN-24 (RGE) bq24616RGE TI
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
Mfr
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
Green
ZLLS350
6.8uH
8.2uH
PEC02SAAN
D2
D1
L1
C25,C27
D11
D10
D9
Capacitor, Ceramic, 50V, X5R, 20%
Diode, Zener, 7.5V, 350-mW
Diode, Schottky, 200-mA, 30-V
Diode, Zener, 7.5V, 350-mW
1812
SOT-23
SOT23
SOT-23
D3,D4,D5,D6, Diode, LED, Green, 2.1V, 20mA, 6mcd 603
D7,D8
L1
JP2,JP4,JP5
Diode, Schottky, 1A, 40V
Diode, Schottky, 1.16A, 40-V
Inductor, SMT, 9A, 19.8milliohm
Inductor, SMT, 9.5A, 18.3milliohm
Header, 2 pin, 100mil spacing,
DO-214AA
SOD-523
STD
BZX84C7V5
BAT54
BZX84C7V5
LTST-
C190GKT
MBRS140
ZLLS350
STD
Diodes
Vishay-Liteon
Diodes
Lite On
Fairchild
Zetex
0.520 sq inch IHLP5050CEE Vishay
R6R8M01
0.520 sq inch IHLP5050CEE Vishay
R8R2M01
0.100 inch x 2 PEC02SAAN Sullins
8 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
1
2
1
1
Table 4. Bill of Materials (continued)
1
2
2
1
1
4
1
1
1
2
6
0
3
1
1
1
1
6
1
0 bq24610-001 bq24617-002 Bq24630-003 bq24616-004 Value
2 2 2 2 PEC03SAAN
RefDes
JP1,JP3
4 4 4 4 0
Description
Header, 3 pin, 100mil spacing,
R10,R19,R26, Resistor, Chip, 1/16W, 1%
R13
1
1
0
3
1
1
0
1
6
1
2
6
1
1
4
1
1
1
2
2
1
0
1
3
1
0
1
1
6
1
2
6
1
1
1
1
4
1
2
2
1
0
1
3
1
0
1
1
6
1
2
6
1
1
1
1
4
1
2
2
10
9.31k
2.2k
1k
100
430k
6.8k
0
2.21k
10
10k
100k
10k
100k
22.1k
32.4k
100k
909k
3.9
0.01
R22
R4
R4
R21,R24,R27 Resistor, Chip, 1/16W, 1%
R8
R5
R5
R17
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
R31,R34,R35, Resistor, Chip, 1/16W, 1%
R36,R39,R40
R14
R29,R30
R3,
R20,R32,R33,
R37,R38
R16
R15
R12
R7
Resistor, Chip, 1/4W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/10W, 1%
R6,R11,R23,R Resistor, Chip, 1/10W, 1%
28
R25
R1,R2
R9,R18
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/8W, 5%
Resistor, Chip, 1/2W, 1%
1
2
1
1
1
2
1
1
1
2
1
1
ED1515
ED1516
ED120/2DS
ED120/4DS
J2
J3,J4
J1
J5
Terminal Block, 3 pin, 6A, 3.5mm
Terminal Block, 4 pin, 6A, 3.5mm
Terminal Block, 2 pin, 15A, 5.1mm
Terminal Block, 4 pin, 15A, 5.1mm
Bill of Materials, Board Layout and Schematics
805
805
805
805
805
805
1206
2010
0.41 x 0.25
inch
0.55 x 0.25
inch
0.40 x 0.35
inch
0.80 x 0.35
inch
Size Part Number Mfr
0.100 inch x 3 PEC03SAAN Sullins
402 Std Std
402
402
603
603
1206
402
402
402
402
603
603
603
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std Std
Std Std
WSL2010R01 Vishay
00FEA
ED555\3DS OST
ED555\4DS
ED120/2DS
OST
OST
ED120/4DS OST
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger 9
Copyright © 2010, Texas Instruments Incorporated
Bill of Materials, Board Layout and Schematics www.ti.com
Table 4. Bill of Materials (continued) bq24610-001
1
14
5
3
3
2
2
4
4
1
5 bq24617-002
1
14
5
3
3
2
2
1
5
4
4
Bq24630-003
1
14
5
3
3
2
2
1
5
4
4 bq24616-004
1
14
5
3
3
2
2
1
5
4
4
Value
5001
5002
RefDes Description
GND Test Point, Black, Thru Hole Color
Keyed
/ACDRV,/BAT Test Point, White, Thru Hole Color
DRV,/PG,
ACSET,CHGE
Keyed
N,ISET1,ISET
2, REGN,
STAT1,STAT2
,TS,TTC,
VCC,VREF
131-4244-00 TP1,TP2,TP8, Adaptor, 3.5-mm probe clip ( or
TP9,TP12 131-5031-00)
2N7002DICT Q6,Q8,Q9 MOSFET, N-ch, 60V, 115mA,
1.2Ohms
SI4401BDY-
T1-GE
FDS4141
FDS8447
Q1,Q2,Q5
(Note 5)
Q3,Q4
MOSFET, PChan, -40V, -18A,
9.2millohm
TP0610K
929950-00
Q7,Q10
PCB
MOSFET, NChan, 40V, 50A, 4.5
millohm
Mosfet, P-Ch, 60V, Rds 6 ohms, Id
185 mA
4 layer 2oz. PCB
Shorting jumpers, 2-pin, 100mil spacing
STANDOFF M/F HEX 6-32 NYL .500"
6-32 NYL Hex nuts
Size
0.100 x 0.100
inch
Part Number Mfr
5001
0.100 x 0.100
5002 inch
Keystone
Keystone
0.200 inch
SOT23
S0-8
S0-8
SOT-23
131-4244-00 Tektronix
2N7002DICT Vishay-Liteon
SI4401BDY
FDS4141
FDS8447
TP0610K
HPA422
929950-00
4816
NY HN 632
Vishay-
Siliconxi
Fairchild
Vishay-
Siliconix
Vishay-
Siliconix
3M/ESD
Keystone
Building
Fasteners
10 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
5 Board Layout
Board Layout
Figure 2. Top Layer
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
11
Board Layout www.ti.com
Figure 3. 2 nd Layer
12 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
Board Layout
Figure 4. 3 rd Layer
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
13
Board Layout www.ti.com
Figure 5. Bottom Layer
14 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
Board Layout
Figure 6. Top Assembly
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
15
Board Layout www.ti.com
Figure 7. Bottom Assembly
16 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
Board Layout
Figure 8. Top Silkscreen
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
17
Board Layout www.ti.com
Figure 9. Bottom Silkscreen
18 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
SLUU396A – January 2010 – Revised July 2010
www.ti.com
6 Schematics
Schematics
Figure 10. bq2461x/bq2463x EVM Schematic
SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
19
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EVM Warnings and Restrictions
It is important to operate this EVM within the input voltage range of 5 V to 28 V and the output voltage range of 0 V to 26 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
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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 125° 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.
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Copyright © 2010, Texas Instruments Incorporated
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