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Texas Instruments BQ24351EVM manual

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Table of contents for the manual

  • Page 1

    User's Guide SLUU455 – October 2010 bq24351EVM for Li-Ion Charger Front-End Protection IC This user's guide describes the features, setup, and operation of the bq24351EVM evaluation module. Included are the bill of materials, board layout, and schematic. Contents 1 Introduction ...........................................................[...]

  • Page 2

    Introduction www.ti.com 1 Introduction 1.1 General Description The bq24351 evaluation module (EVM) is a complete charger module for evaluating a charger front-end protection and charger solution using the bq24351 and bq2057C devices. It is designed to deliver up to 560 mA of charge current to Li-ion or Li-polymer applications. The charger front-end[...]

  • Page 3

    www.ti.com Test Summary 1.4 Controls and Key Parameters Setting Jack (1) Description Factory Setting JP1 If on, high-side sensing resistor is disabled Jumper on JP2 Reserved for other ICs Jumper (BATEN, GND) on JP3 bq24351 GATDRV pin Jumper off JP4 bq2057C BAT pin connection to bq24351 Jumper on JP5 bq2057C VCC pin connection to bq24351 Jumper on J[...]

  • Page 4

    F AUL T VBA T GA TDR V CHGIN BA T EN OUT BA T + GND HP A666 bq24351EVM JP7 V Supply 1 J1 DC+ JP1 U1 J4 BA T + V I 2 Ibat CFET AP PLICA TIO N CIRCUIT JP6 JP5 JP 4 JP3 JP 2 U2 J2 J3 I I Load 1 Test Summary www.ti.com 2.2.2 Load 1 A 10-V (or above), 2-A (or above) electronic load that can operate in constant-current mode. 2.2.3 Load 2 A 10-V (or above[...]

  • Page 5

    www.ti.com PCB Layout Guideline 2.4 Procedure 2.4.1 Charger Current and Voltage Regulation 1. Ensure that steps in Section 2.3 are followed. 2. Enable output of PS 1. 3. Increase the output voltage of PS 1 to 5 V ± 0.1 V. 4. Enable the output of load 2. Measure → V(J2(OUT)) = 3.6 V ± 200 mV Measure → Ibat = 560 mA ± 70 mA Observe → D2 on, [...]

  • Page 6

    Bill of Materials, Board Layout, and Schematic www.ti.com 4 Bill of Materials, Board Layout, and Schematic 4.1 Bill of Materials Table 1. Bill of Materials bq24351 RefDes Value Description Size Part Number MFR 1 C1 1 µ F Capacitor, ceramic, 35-V, X5R, 10% 603 Std Std 3 C2, C3, C5 1 µF Capacitor, ceramic, 10-V, X7R, 10% 603 Std Std 1 C4 0.1 µF Ca[...]

  • Page 7

    C001 www.ti.com Bill of Materials, Board Layout, and Schematic 4.2 Board Layout Figure 2. Top Layer 7 SLUU455 – October 2010 bq24351EVM for Li-Ion Charger Front-End Protection IC Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated[...]

  • Page 8

    C002 Bill of Materials, Board Layout, and Schematic www.ti.com Figure 3. Bottom Layer 8 bq24351EVM for Li-Ion Charger Front-End Protection IC SLUU455 – October 2010 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated[...]

  • Page 9

    C003 www.ti.com Bill of Materials, Board Layout, and Schematic Figure 4. Top Silk Screen 9 SLUU455 – October 2010 bq24351EVM for Li-Ion Charger Front-End Protection IC Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated[...]

  • Page 10

    C004 Bill of Materials, Board Layout, and Schematic www.ti.com Figure 5. Top Assembly 10 bq24351EVM for Li-Ion Charger Front-End Protection IC SLUU455 – October 2010 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated[...]

  • Page 11

    CAUTION: Device may have surface temperature in excess of 60°C when unit is operational. www.ti.com Bill of Materials, Board Layout, and Schematic 4.3 Schematic Figure 6. bq24351 Schematic 11 SLUU455 – October 2010 bq24351EVM for Li-Ion Charger Front-End Protection IC Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporate[...]

  • Page 12

    Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling th[...]

  • Page 13

    IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders[...]