Texas Instruments BQ2461X - Manual

Texas Instruments BQ2461X

Texas Instruments BQ2461X – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – Introduction; EVM Features; High Efficiency Synchronous Buck Charger; General Description; Jack
  • Page 3 – Controls and Key Parameters Setting; Table 2. Controls and Key Parameters Setting; Recommended Operating Conditions; Table 3. Recommended Operating Conditions
  • Page 4 – Test Summary; Definitions; Power Supplies
  • Page 5 – Load; Power; Oscilloscope; METERS; Equipment Setup; After the above steps, the test setup for HPA422 is shown in
  • Page 6 – Procedure; AC Adapter Detection Threshold; Measure; Charge Current and AC Current Regultion (DPM); Figure 1
  • Page 7 – Charger Cut-Off by Thermistor; Power Path Selection; PCB Layout Guideline
  • Page 8 – Bill of Materials, Board Layout and Schematics; Bill of Materials; Table 4. Bill of Materials
  • Page 11 – Board Layout
  • Page 12 – Layer
  • Page 14 – Figure 5. Bottom Layer
  • Page 15 – Figure 6. Top Assembly
  • Page 16 – Figure 7. Bottom Assembly
  • Page 17 – Figure 8. Top Silkscreen
  • Page 18 – Figure 9. Bottom Silkscreen
  • Page 19 – Schematics
  • Page 21 – IMPORTANT NOTICE; Products
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User's Guide

SLUU396A – January 2010 – Revised July 2010

bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous

Switch-Mode Charger

Contents

1

Introduction

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

2

1.1

EVM Features

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

2

1.2

General Description

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

2

1.3

I/O Description

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

2

1.4

1.4 Controls and Key Parameters Setting

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

3

1.5

Recommended Operating Conditions

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

3

2

Test Summary

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

4

2.1

Definitions

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

4

2.2

Equipment

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

4

2.3

Equipment Setup

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

5

2.4

Procedure

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

6

3

PCB Layout Guideline

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

7

4

Bill of Materials, 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

2

nd

Layer

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

12

4

3

rd

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 Parameters Setting

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

3

3

Recommended Operating Conditions

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

3

4

Bill of Materials

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

8

1

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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Summary

Page 2 - Introduction; EVM Features; High Efficiency Synchronous Buck Charger; General Description; Jack

Introduction www.ti.com 1 Introduction 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 Signal...

Page 3 - Controls and Key Parameters Setting; Table 2. Controls and Key Parameters Setting; Recommended Operating Conditions; Table 3. Recommended Operating Conditions

www.ti.com Introduction Table 1. I/O Description (continued) Jack Description J5–GND Ground JP1–LOW Ground JP1–TTC Timer capacitor pin JP1–HI Pull-up voltage source JP2–HI Pull-up voltage source JP2–LEDPWR LED Pull-up power line JP3–VREF IC reference voltage VREF JP3–VPULLUP Pull-up voltage source J...

Page 4 - Test Summary; Definitions; Power Supplies

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 thefactory. 2 Test Summary 2.1 Definitions Thi...

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