Texas Instruments bq2461 Series User Manual Download

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User's Guide

SLUU396A – January 2010 – Revised July 2010

bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous

Switch-Mode Charger

Contents

Introduction

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1.1

EVM Features

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1.2

General Description

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1.3

I/O Description

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1.4

1.4 Controls and Key Parameters Setting

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1.5

Recommended Operating Conditions

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Test Summary

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2.1

Definitions

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2.2

Equipment

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2.3

Equipment Setup

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2.4

Procedure

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PCB Layout Guideline

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Bill of Materials, Board Layout and Schematics

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4.1

Bill of Materials

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Board Layout

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Schematics

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List of Figures

Original Test Setup for HPA422 (bq2461x/bq2463x EVM)

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Top Layer

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Layer

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Layer

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Bottom Layer

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Top Assembly

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Bottom Assembly

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Top Silkscreen

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Bottom Silkscreen

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bq2461x/bq2463x EVM Schematic

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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

Summary of Contents for bq2461 Series

Page 1: ...ls Board Layout and Schematics 8 4 1 Bill of Materials 8 5 Board Layout 11 6 Schematics 19 List of Figures 1 Original Test Setup for HPA422 bq2461x bq2463x EVM 5 2 Top Layer 11 3 2nd Layer 12 4 3rd Layer 13 5 Bottom Layer 14 6 Top Assembly 15 7 Bottom Assembly 16 8 Top Silkscreen 17 9 Bottom Silkscreen 18 10 bq2461x bq2463x EVM Schematic 19 List of Tables 1 I O Description 2 2 Controls and Key Par...

Page 2: ...on 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 enabl...

Page 3: ...On LED has no power source when off VPULLUP setting Jumper On 1 2 VPULLUP and JP3 1 2 Connect VPULLUP to VREF VREF 2 3 Connect VPULLUP to VEXT JP4 The pull up voltage source of ACDRV and BATDRV LED logic circuit Jumper on CHGEN setting JP5 Jumper on CHGEN to VPULLUP Jumper Off Jumper off CHGEN is set to low by pull down resistor 1 5 Recommended Operating Conditions Table 3 Recommended Operating Co...

Page 4: ... 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 jumper...

Page 5: ...n 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 L...

Page 6: ...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 ...

Page 7: ...DRV 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 st...

Page 8: ... 805 STD STD 2 2 2 2 1 0uF 50V C12 C14 Capacitor Ceramic 50V X5R 20 1206 STD STD 1 1 1 1 2 2uF 50V C2 Capacitor Ceramic 50V X7R 20 1206 STD STD 0 0 0 0 C32 Capacitor Ceramic 50V X7R 20 1206 STD STD 6 6 6 6 10uF 50V C10 C11 C20 Capacitor Ceramic 50V Y5V 1812 STD STD C23 C28 C29 20 80 0 0 0 0 C25 C27 Capacitor Ceramic 50V X5R 20 1812 STD STD 0 0 0 0 D11 Diode Zener 7 5V 350 mW SOT 23 BZX84C7V5 Diode...

Page 9: ...d Std 2 2 2 2 10k R29 R30 Resistor Chip 1 16W 1 603 Std Std 6 6 6 6 100k R3 Resistor Chip 1 16W 1 603 Std Std R20 R32 R33 R37 R38 1 1 1 1 10k R16 Resistor Chip 1 10W 1 805 Std Std 1 1 1 1 100k R15 Resistor Chip 1 10W 1 805 Std Std 1 1 1 1 22 1k R12 Resistor Chip 1 10W 1 805 Std Std 1 1 1 1 32 4k R7 Resistor Chip 1 10W 1 805 Std Std 4 4 4 4 100k R6 R11 R23 R Resistor Chip 1 10W 1 805 Std Std 28 1 1...

Page 10: ...3 2N7002DICT Q6 Q8 Q9 MOSFET N ch 60V 115mA SOT23 2N7002DICT Vishay Liteon 1 2Ohms 3 3 3 3 SI4401BDY Q1 Q2 Q5 MOSFET PChan 40V 18A S0 8 SI4401BDY Vishay T1 GE Note 5 9 2millohm FDS4141 Siliconxi FDS4141 Fairchild 2 2 2 2 FDS8447 Q3 Q4 MOSFET NChan 40V 50A 4 5 S0 8 FDS8447 Vishay millohm Siliconix 2 2 2 2 TP0610K Q7 Q10 Mosfet P Ch 60V Rds 6 ohms Id SOT 23 TP0610K Vishay 185 mA Siliconix 1 1 1 1 PC...

Page 11: ...com Board Layout 5 Board Layout Figure 2 Top Layer 11 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporated ...

Page 12: ...Board Layout www ti com Figure 3 2nd Layer 12 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorporated ...

Page 13: ...www ti com Board Layout Figure 4 3rd Layer 13 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporated ...

Page 14: ...oard Layout www ti com Figure 5 Bottom Layer 14 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorporated ...

Page 15: ...ww ti com Board Layout Figure 6 Top Assembly 15 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporated ...

Page 16: ...rd Layout www ti com Figure 7 Bottom Assembly 16 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorporated ...

Page 17: ...w ti com Board Layout Figure 8 Top Silkscreen 17 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporated ...

Page 18: ...d Layout www ti com Figure 9 Bottom Silkscreen 18 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorporated ...

Page 19: ...atics 6 Schematics Figure 10 bq2461x bq2463x EVM Schematic 19 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporated ...

Page 20: ...roduct 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...

Page 21: ...o change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for and you will fully indemn...

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