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bq24735/725A Battery Charger Evaluation Module
This user's guide describes the features and operation of the bq24725A/735EVM Evaluation Module.
1
Introduction
1.1
EVM Features
1.2
General Description
1.3
Input/Output Jack Description
1.4
Control and Key Parameters Setting
1.5
Recommended Operating Conditions
2
Test Summary
2.1
Definitions
2.2
Equipment
2.3
Equipment Setup
2.4
Procedure
3
Printed-Circuit-Board Layout Guideline
4
Bill of Materials, Board Layout, and Schematics
4.1
Board Layouts
4.2
Schematics
1
EV2300 Kit Connections
2
Original Test Setup for HPA710
3
Main Window of bq24725A/735 Evaluation Software
4
Test Setup for HPA710
5
Top Assembly
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6
Top Layer
7
Second Layer
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8
Third Layer
9
Bottom Layer
10
Bottom Assembly
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11
Schematic
1
EV2300 and bq24725A/735EVM Connections
2
Bill of Materials
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SLUU507A – June 2011 – Revised September 2011
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Copyright © 2011, Texas Instruments Incorporated
SLUU507A – June 2011 – Revised September 2011
Contents
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List of Figures
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List of Tables
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bq24735/725A Battery Charger Evaluation Module
User's Guide
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Summary of Contents for Texas Instruments bq24735
- Page 1 User's Guide SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module This user's guide describes the features and operation of the bq24725A/735EVM Evaluation Module. Contents ........................Introduction ...................... EVM Features ....................General Description ..................Input/Output Jack Description ................
- Page 2 The bq24725A/735 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multichemistry battery charging applications. The bq24735 supports the Turbo Boost mode by allowing the battery to discharge energy to the system when system power demand is temporarily higher than adapter maximum power level so that the adapter does not crash.
- Page 3 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 20 V at 5 A is required. SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 4 Connect the USB port of the EV2300 kit to the USB port of the computer. The connections are shown in Figure bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 5 11. Turn on the computer. Open the bq24725A/735 evaluation software. The main window of the software appears as is shown in Figure SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 6 Figure 3, and disconnect USB cable. b) Check 3.3-V power supply (PS#2) and power supply #1 (PS#1) voltage on the EVM board. bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 7 4. Type in 7800 in the Charge Option, and click Write, this enable charging. Measure → Ibat = 500 mA ± 100 mA SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 8 (minimize loop area), and do not route the sense leads through a high-current path. Place decoupling capacitor on these traces next to the IC. 5. Place output capacitor next to the sensing resistor output and ground. bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback...
- Page 9 Ensure that sufficient thermal vias are located directly under the IC, connecting to the ground plane on the other layers. SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 10 Resistor, Chip, 1/16W, 1% 10.0 Resistor, Chip, 1/4W, 1% 1206 R17, R18, R19 10.0k Resistor, Chip, 1/16W, 1% bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 11 5. Install label after final wash. Text shall be 8 pt font. Text shall be per Table 1. Table 1. Assembly Number Text HPA710-001 bq24725AEVM-710 HPA710-002 bq24735EVM-710 SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 12 Bill of Materials, Board Layout, and Schematics www.ti.com Board Layouts EXAS NSTRUMENTS Figure 5. Top Assembly bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 13 Bill of Materials, Board Layout, and Schematics www.ti.com Figure 6. Top Layer SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 14 Bill of Materials, Board Layout, and Schematics www.ti.com Figure 7. Second Layer bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 15 Bill of Materials, Board Layout, and Schematics www.ti.com Figure 8. Third Layer SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 16 Bill of Materials, Board Layout, and Schematics www.ti.com Figure 9. Bottom Layer bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 17 Bill of Materials, Board Layout, and Schematics www.ti.com Figure 10. Bottom Assembly SLUU507A – June 2011 – Revised September 2011 bq24735/725A Battery Charger Evaluation Module Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 18 Bill of Materials, Board Layout, and Schematics www.ti.com Schematics Figure 11. Schematic bq24735/725A Battery Charger Evaluation Module SLUU507A – June 2011 – Revised September 2011 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated...
- Page 19 Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization.
- Page 20 FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
- Page 21 Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp...
- Page 22 FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2012, Texas Instruments Incorporated...
- Page 23 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
- Page 24 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
- Page 25 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
- Page 26 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2015, Texas Instruments Incorporated...
- Page 27 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
- Page 28 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ24735EVM-710...
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