User's Guide
SLUU396A–January 2010–Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous
Switch-Mode Charger
Contents
1
2
Introduction .................................................................................................................. 2
1.1
1.2
1.3
1.4
1.5
EVM Features ...................................................................................................... 2
General Description ................................................................................................ 2
I/O Description ...................................................................................................... 2
1.4 Controls and Key Parameters Setting ...................................................................... 3
Recommended Operating Conditions ........................................................................... 3
Test Summary ............................................................................................................... 4
2.1
2.2
2.3
2.4
Definitions ........................................................................................................... 4
Equipment ........................................................................................................... 4
Equipment Setup ................................................................................................... 5
Procedure ........................................................................................................... 6
3
4
PCB Layout Guideline ...................................................................................................... 7
Bill of Materials, Board Layout and Schematics ........................................................................ 8
4.1
Bill of Materials ..................................................................................................... 8
5
6
Board Layout ............................................................................................................... 11
Schematics ................................................................................................................. 19
List of Figures
1
2
3
4
5
6
7
8
9
10
Original Test Setup for HPA422 (bq2461x/bq2463x EVM)............................................................
Top Layer................................................................................................................... 11
2nd Layer .................................................................................................................... 12
3rd Layer..................................................................................................................... 13
Bottom Layer............................................................................................................... 14
Top Assembly.............................................................................................................. 15
Bottom Assembly.......................................................................................................... 16
Top Silkscreen ............................................................................................................. 17
Bottom Silkscreen ......................................................................................................... 18
bq2461x/bq2463x EVM Schematic ..................................................................................... 19
List of Tables
1
2
3
4
I/O Description...............................................................................................................
Controls and Key Parameters Setting....................................................................................
Recommended Operating Conditions ....................................................................................
Bill of Materials ..............................................................................................................
1
SLUU396A–January 2010–Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
Download from Www.Somanuals.com. All Manuals Search And Download.
Introduction
Table 1. I/O Description (continued)
Jack
Description
J5–GND
Ground
JP1–LOW
JP1–TTC
JP1–HI
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
JP2–HI
JP2–LEDPWR
JP3–VREF
JP3–VPULLUP
JP3–EXT
JP4–VCC
JP4–VCOM
JP5–HI
JP5–CHGEN
1.4 1.4 Controls and Key Parameters Setting
Table 2. Controls and Key Parameters Setting
Jack
Description
Factory Setting
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
JP1
Jumper on 2-3 (TTC and VPULLUP)
Jumper On
The pull-up power source supplies the LEDs when on.
LED has no power source when off.
JP2
VPULLUP setting
1-2 : Connect VPULLUP to VREF
2-3 : Connect VPULLUP to VEXT
Jumper On 1-2 (VPULLUP and
VREF)
JP3
JP4
JP5
The pull-up voltage source of ACDRV and BATDRV LED logic circuit.
Jumper on
Jumper Off
CHGEN setting
Jumper on: CHGEN to VPULLUP
Jumper off: CHGEN is set to low by pull down resistor.
1.5 Recommended Operating Conditions
Table 3. Recommended Operating Conditions
Symbol
Description
Min
Typ
Max
Unit
24(617)
28
Supply voltage, VIN
Input voltage from ac adapter input
5
24
V
(610/616/63x)
2.1 (61x)
1.8 (63x)
21 (61x)
18 (63x)
Battery voltage, VBAT
Voltage applied at VBAT terminal of J5
V
Maximum input current from ac adapter
input
Supply current, IAC
Charge current, Ichrg
0
2
0
4.5
8
A
A
Battery charge current
3
Operating junction
temperature range, TJ
125
°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.
3
SLUU396A–January 2010–Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
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Test Summary
R25 and R28 can be changed to regulate output.
VBAT = 2.1V × [1+ R25/R28]; for bq2461x;
VBAT = 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:
External voltage supply name (VADP, VBT, VSBT)
External load name (LOADR, LOADI)
LOADW:
V(TPyyy):
V(Jxx):
Voltage at internal test point TPyyy. For example, V(TP12) means the voltage at TP12
Voltage at jack terminal Jxx.
V(TP(XXX)):
Voltage at test point "XXX". For example, V(ACDET) means the voltage at the test
point which is marked as "ACDET".
V(XXX, YYY):
I(JXX(YYY)):
Jxx(BBB):
Voltage across point XXX and YYY.
Current going out from the YYY terminal of jack XX.
Terminal or pin BBB of jack xx
Jxx ON:
Internal jumper Jxx terminals are shorted
Internal jumper Jxx terminals are open
Jxx OFF:
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
2.2.3
2.2.4
LOAD #1
A 30V (or above), 5A (or above) electronic load that can operate at constant current mode
LOAD #2
A Kepco bipolar operational power supply/amplifier, 0 ±30V (or above), 0 ±6A (or above).
Oscilloscope
Tektronix TDS3054 scope or equivalent, 10X voltage probe.
4
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
SLUU396A–January 2010–Revised July 2010
Copyright © 2010, Texas Instruments Incorporated
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Test Summary
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
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.
bq24610/616/617/30 EVM
HPA422
PH
J1
I
Isys
ACPWR
TP12
SYS
TP1
ACPWR
Power
supply #1
Iin
V
I
I
PGND
Load
#1
J5
V
V
SYS
BAT
TP2
U1
Load
#2
Ibat
TP9
PGND
J3
J2
VCC
ACSET
ISET1
ISET2
JP4
VBAT
Oscilloscope
APPLICATION CIRCUIT
GND
I
VREF
JP3
J4
VEXT
HI
VEXT
GND
PG
L
JP1
JP2
O
JP5
STAT1
VREF
Power
TTC
sup ply #2
TS
CE
PG
/STAT1
/STAT2
/ACDRV
/BATDRV
Figure 1. Original Test Setup for HPA422 (bq2461x/bq2463x EVM)
5
SLUU396A–January 2010–Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
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Test Summary
2.4 Procedure
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 Figure 1 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
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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.
7
SLUU396A–January 2010–Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
Download from Www.Somanuals.com. All Manuals Search And Download.
Bill of Materials, Board Layout and Schematics
4
Bill of Materials, Board Layout and Schematics
4.1 Bill of Materials
Table 4. Bill of Materials
bq24610-001 bq24617-002 Bq24630-003 bq24616-004 Value
RefDes
Description
Size
Part Number Mfr
1
0
0
0
1
6
0
1
0
0
1
6
0
0
1
0
1
6
0
0
0
1
1
6
bq24610RGE U1
Charger Controller IC
Charger Controller IC
Charger Controller IC
Charger Controller IC
Capacitor, Ceramic, 16V, X7R, 5%,
QFN-24 (RGE) bq24610RGE TI
QFN-24 (RGE) bq24617RGE TI
QFN-24 (RGE) bq24630RGE TI
QFN-24 (RGE) bq24616RGE TI
bq24617RGE U1
bq24630RGE U1
bq24616RGE U1
0.1uF
0.1uF
C3
603
603
STD
STD
STD
C7,C8,C13,C1 Capacitor, Ceramic, 16V, X7R, 10%
8,C19,C33
STD
6
6
6
6
0.1uF
22p
C4,C5,C16,C1 Capacitor, Ceramic, 50V, X7R, 10%
7,C24,C26
603
STD
STD
1
0
1
0
1
0
1
0
C22
Capacitor, Ceramic, 50V, X7R, 10%
603
603
STD
STD
STD
STD
C9,C21,C30,C Capacitor, Ceramic, 50V, X7R, 10%
31
3
0
2
1
0
6
3
0
2
1
0
6
3
0
2
1
0
6
3
0
2
1
0
6
1.0uF
C1,C6,C15
C34
Capacitor, Ceramic, 16V, X7R, 20%
Capacitor, Ceramic, 50V, X7R, 10%
Capacitor, Ceramic, 50V, X5R, 20%
Capacitor, Ceramic, 50V, X7R, 20%
Capacitor, Ceramic, 50V, X7R, 20%
805
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
805
1.0uF/50V
2.2uF/50V
C12,C14
C2
1206
1206
1206
1812
C32
10uF/50V
C10,C11,C20, Capacitor, Ceramic, 50V, Y5V,
C23,C28,C29 -20/+80%
0
0
0
0
6
0
0
0
0
6
0
0
0
0
6
0
0
0
0
6
C25,C27
D11
Capacitor, Ceramic, 50V, X5R, 20%
Diode, Zener, 7.5V, 350-mW
Diode, Schottky, 200-mA, 30-V
Diode, Zener, 7.5V, 350-mW
1812
STD
STD
SOT-23
SOT23
SOT-23
BZX84C7V5
BAT54
Diodes
D10
Vishay-Liteon
Diodes
D9
BZX84C7V5
Green
D3,D4,D5,D6, Diode, LED, Green, 2.1V, 20mA, 6mcd 603
D7,D8
LTST-
C190GKT
Lite On
0
1
1
0
1
1
0
1
0
0
1
1
D2
D1
L1
Diode, Schottky, 1A, 40V
DO-214AA
SOD-523
MBRS140
ZLLS350
Fairchild
Zetex
ZLLS350
6.8uH
Diode, Schottky, 1.16A, 40-V
Inductor, SMT, 9A, 19.8milliohm
0.520 sq inch IHLP5050CEE Vishay
R6R8M01
0
3
0
3
1
3
0
3
8.2uH
L1
Inductor, SMT, 9.5A, 18.3milliohm
Header, 2 pin, 100mil spacing,
0.520 sq inch IHLP5050CEE Vishay
R8R2M01
PEC02SAAN
JP2,JP4,JP5
0.100 inch x 2 PEC02SAAN
Sullins
8
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
SLUU396A–January 2010–Revised July 2010
Copyright © 2010, Texas Instruments Incorporated
Download from Www.Somanuals.com. All Manuals Search And Download.
Bill of Materials, Board Layout and Schematics
Table 4. Bill of Materials (continued)
bq24610-001 bq24617-002 Bq24630-003 bq24616-004 Value
RefDes
Description
Size
Part Number Mfr
2
4
2
4
2
4
2
4
PEC03SAAN
0
JP1,JP3
Header, 3 pin, 100mil spacing,
0.100 inch x 3 PEC03SAAN
Sullins
Std
R10,R19,R26, Resistor, Chip, 1/16W, 1%
R13
402
Std
1
1
0
3
1
1
0
1
6
1
1
0
3
1
1
0
1
6
1
0
1
3
1
0
1
1
6
1
0
1
3
1
0
1
1
6
10
R22
R4
Resistor, Chip, 1/4W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
1206
402
402
402
402
402
402
603
603
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
9.31k
2.2k
1k
R4
R21,R24,R27 Resistor, Chip, 1/16W, 1%
100
430k
6.8k
0
R8
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
R5
R5
R17
2.21k
R31,R34,R35, Resistor, Chip, 1/16W, 1%
R36,R39,R40
1
2
6
1
2
6
1
2
6
1
2
6
10
R14
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
Resistor, Chip, 1/16W, 1%
603
603
603
Std
Std
Std
Std
Std
Std
10k
100k
R29,R30
R3,
R20,R32,R33,
R37,R38
1
1
1
1
4
1
1
1
1
4
1
1
1
1
4
1
1
1
1
4
10k
R16
R15
R12
R7
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/10W, 1%
805
805
805
805
805
Std
Std
Std
Std
Std
Std
Std
Std
Std
Std
100k
22.1k
32.4k
100k
R6,R11,R23,R Resistor, Chip, 1/10W, 1%
28
1
2
2
1
2
2
1
2
2
1
2
2
909k
3.9
R25
Resistor, Chip, 1/10W, 1%
Resistor, Chip, 1/8W, 5%
Resistor, Chip, 1/2W, 1%
805
Std
Std
Std
Std
R1,R2
R9,R18
1206
2010
0.01
WSL2010R01 Vishay
00FEA
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
ED1515
J2
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
0.41 x 0.25
inch
ED555\3DS
ED555\4DS
ED120/2DS
ED120/4DS
OST
OST
OST
OST
ED1516
J3,J4
J1
0.55 x 0.25
inch
ED120/2DS
ED120/4DS
0.40 x 0.35
inch
J5
0.80 x 0.35
inch
9
SLUU396A–January 2010–Revised July 2010
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated
Download from Www.Somanuals.com. All Manuals Search And Download.
Bill of Materials, Board Layout and Schematics
Table 4. Bill of Materials (continued)
bq24610-001 bq24617-002 Bq24630-003 bq24616-004 Value
RefDes
Description
Size
Part Number Mfr
1
1
1
1
5001
GND
Test Point, Black, Thru Hole Color
Keyed
0.100 x 0.100 5001
inch
Keystone
14
14
14
14
5002
/ACDRV,/BAT Test Point, White, Thru Hole Color
0.100 x 0.100 5002
inch
Keystone
DRV,/PG,
Keyed
ACSET,CHGE
N,ISET1,ISET
2, REGN,
STAT1,STAT2
,TS,TTC,
VCC,VREF
5
3
3
5
3
3
5
3
3
5
3
3
131-4244-00
2N7002DICT
TP1,TP2,TP8, Adaptor, 3.5-mm probe clip ( or
0.200 inch
SOT23
S0-8
131-4244-00
Tektronix
TP9,TP12
131-5031-00)
Q6,Q8,Q9
MOSFET, N-ch, 60V, 115mA,
1.2Ohms
2N7002DICT
Vishay-Liteon
SI4401BDY-
T1-GE
FDS4141
Q1,Q2,Q5
(Note 5)
MOSFET, PChan, -40V, -18A,
9.2millohm
SI4401BDY
FDS4141
Vishay-
Siliconxi
Fairchild
2
2
2
2
2
2
2
2
FDS8447
Q3,Q4
Q7,Q10
PCB
MOSFET, NChan, 40V, 50A, 4.5
millohm
S0-8
FDS8447
TP0610K
Vishay-
Siliconix
TP0610K
Mosfet, P-Ch, 60V, Rds 6 ohms, Id
185 mA
SOT-23
Vishay-
Siliconix
1
5
1
5
1
5
1
5
4 layer 2oz. PCB
HPA422
929950-00
Shorting jumpers, 2-pin, 100mil
spacing
929950-00
3M/ESD
4
4
4
4
4
4
4
4
STANDOFF M/F HEX 6-32 NYL .500"
6-32 NYL Hex nuts
4816
Keystone
NY HN 632
Building
Fasteners
10
bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
SLUU396A–January 2010–Revised July 2010
Copyright © 2010, Texas Instruments Incorporated
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