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The bq24270/271 evaluation module is a complete charger module for evaluating compact, flexible, and
high-efficiency charge-management solutions for single-cell, Li-ion, and Li-polymer batteries used in a
wide range of portable applications. These charge-management solutions are also switch-mode and USB-
friendly.
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C is a trademark of Philips Electronics N.V.
SLUU924 - April 2012
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Copyright © 2012, Texas Instruments Incorporated
QFN-Packaged bq24270/271
Evaluation Modules
Contents
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List of Tables
QFN-Packaged bq24270/271 Evaluation Modules
User's Guide
SLUU924 - April 2012
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Table of Contents
Related Manuals for Texas Instruments bq2427 Series
Summary of Contents for Texas Instruments bq2427 Series
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Page 1: Table Of Contents
Second Internal Layer ....................... Bottom Layer List of Tables ....................Bill of Materials - HPA758 C is a trademark of Philips Electronics N.V. SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 2: Introduction
USB operating range of 4.2 V – 6 V • LED indication for status signals • Test points for key signals available for testing purposes. Easy probe hook-up QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 3: Schematic
Introduction www.ti.com Schematic Figure 1. HPA758A Schematic SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 4: I/O Description
Test Point Description AGND Kelvin to USB Kelvin to SYS PGND AGND PSEL Kelvin to BAT TP10 TP11 AGND TP12 STAT TP13 TP14 TP15 QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 5: Control And Key Parameters Setting
Maximum input current from USB or equivalent supply USB(MAX) Maximum fast charge Battery charge current 0.550 current, I chrg Operating junction temperature range, T °C SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 6: Test Summary
Figure 2 can simulate a battery when connected to a power supply. QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 7: Recommended Test Equipment Setup
WRITE button to write changes to the IC. Recommended Test Equipment Setup 1. For all power connections, use short, twisted-pair wires of appropriate gauge wire for the maximum current amount. SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 8: Connections Of Hpa172 Kit
9. Ensure jumpers are at the default factory settings per Section 1.6 10. After the preceding steps have been performed, the test setup for HPA758 is configured as shown in Figure 4 QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 9: Original Test Setup For Bq24270/271Evm (Hpa758)
Open the bq2427x evaluation software and click "USB DEVICE" when prompted at start-up. The main window of the software is shown in Figure SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 10: Recommended Test Procedure
5. Ensure the electronic load is on current mode and set the current to 1 A or turn down the resistor decade box until CM #3 measures 1000 ±100 mA. QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 11: Printed-Circuit Board Layout Guideline
Place 1-µF input capacitor GNDs as close to the respective PMID capacitor GND and PGND pins as possible to minimize the ground difference between the input and PMID. SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... - Page 12 7. For high-current applications, the balls for the power paths must be connected to as much copper in the board as possible. This allows better thermal performance because the board conducts heat away from the IC. QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated...
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Page 13: Bill Of Materials And Board Layout
Resistor, Chip, 1/16W, 1% 0603 TP1, TP2, TP3, TP4, TP8, 5000 Test Point, Red, Thru Hole Color Keyed 0.100 x 0.100 inch 5000 Keystone TP12, TP15 SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... - Page 14 BATTERY CHARGER with Power Path Management and I2C Interface Shunt, 100-mil, Black 0.100 929950-00 PCB 3.00 in. x 3.00 in. x 0.062 in. HPA758 QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated...
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Page 15: Board Layout
Bill of Materials and Board Layout www.ti.com Board Layout Figure 6. Top Assembly Layer SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 16: Top Layer
Bill of Materials and Board Layout www.ti.com Figure 7. Top Layer QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 17: First Internal Layer
Bill of Materials and Board Layout www.ti.com Figure 8. First Internal Layer SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 18: Second Internal Layer
Bill of Materials and Board Layout www.ti.com Figure 9. Second Internal Layer QFN-Packaged bq24270/271 Evaluation Modules SLUU924 – April 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... -
Page 19: Bottom Layer
Bill of Materials and Board Layout www.ti.com Figure 10. Bottom Layer SLUU924 – April 2012 QFN-Packaged bq24270/271 Evaluation Modules Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated... - Page 20 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 21 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 22 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 23 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 24 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 25 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 26 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 27 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 28 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 29 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ24271EVM-758...
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