Texas Instruments BQ2463X EVM User's Guide

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Texas Instruments BQ2463X EVM User's Guide | Manualzz

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

..................................................................................................................

2

EVM Features

......................................................................................................

2

1.2

1.3

1.4

General Description

I/O Description

................................................................................................

2

......................................................................................................

2

1.4 Controls and Key Parameters Setting

......................................................................

3

1.5

Recommended Operating Conditions

Test Summary

...........................................................................

3

...............................................................................................................

4

2.1

2.2

2.3

Definitions

...........................................................................................................

4

Equipment

...........................................................................................................

4

Equipment Setup

...................................................................................................

5

2.4

Procedure

...........................................................................................................

6

PCB Layout Guideline

......................................................................................................

7

Bill of Materials, Board Layout and Schematics

4.1

Bill of Materials

........................................................................

8

.....................................................................................................

8

Board Layout

Schematics

...............................................................................................................

11

.................................................................................................................

19

List of Figures

Original Test Setup for HPA422 (bq2461x/bq2463x EVM)

............................................................

5

Top Layer

...................................................................................................................

11

2 nd Layer

....................................................................................................................

12

3 rd 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

I/O Description

...............................................................................................................

2

Controls and Key Parameters Setting

....................................................................................

3

Recommended Operating Conditions

....................................................................................

3

Bill of Materials

..............................................................................................................

8

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

Figure 1 .

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

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

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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TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein.

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI’s environmental and/or safety programs, please contact the TI application engineer or visit www.ti.com/esh .

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.

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PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference.

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.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright © 2010, Texas Instruments Incorporated

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