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User's Guide

SLUU668–March 2012

QFN-Packaged bq24160/161/162A/63EVM

Evaluation Modules

The bq24160/161/162A/63EVM evaluation module is a complete charger module for evaluating compact,

flexible, high-efficiency, USB-friendly, switch-mode, charge-management solutions for single-cell, Li-ion

and Li-polymer batteries used in a wide range of portable applications.

Contents

1 Introduction .................................................................................................................. 2

1.1 bq2416x IC Features .............................................................................................. 2

1.2 bq24160/161/163/168EVM Features ............................................................................ 2

1.3 Schematic ........................................................................................................... 3

1.4 I/O Description ...................................................................................................... 4

1.5 Test Points .......................................................................................................... 4

1.6 Control and Key Parameters Setting ............................................................................ 5

1.7 Recommended Operating Conditions ........................................................................... 5

2 Test Summary ............................................................................................................... 6

2.1 Definitions ........................................................................................................... 6

2.2 Recommended Test Equipment ................................................................................. 6

2.3 Recommended Test Equipment Setup .......................................................................... 8

2.4 Recommended Test Procedure ................................................................................ 10

3 Printed-Circuit Board Layout Guideline ................................................................................. 12

4 Bill of Materials and Board Layout ...................................................................................... 13

4.1 Bill of Materials .................................................................................................... 13

4.2 Board Layout ...................................................................................................... 15

List of Figures

1 HPA742A Schematic ....................................................................................................... 3

2 BAT_Load (PR1010) Schematic .......................................................................................... 7

3 Connections of HPA172 Kit................................................................................................ 8

4 Original Test Setup for bq24160/161/163/168EVM (HPA742)........................................................ 9

5 Main Window of bq2416xSW Evaluation Software ................................................................... 10

6 Top Assembly Layer ...................................................................................................... 15

7 Top Layer .................................................................................................................. 16

8 First Internal Layer ........................................................................................................ 17

9 Second Internal Layer .................................................................................................... 18

10 Bottom Layer............................................................................................................... 19

List of Tables

1 Bill of Materials - HPA742 ............................................................................................... 13

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SLUU668–March 2012 QFN-Packaged bq24160/161/162A/63EVM Evaluation Modules

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Summary of content (25 pages)

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User's Guide SLUU668 – March 2012 QFN-Packaged bq24160/161/162A/63EVM Evaluation Modules The bq24160/161/162A/63EVM evaluation module is a complete charger module for evaluating compact, flexible, high-efficiency, USB-friendly, switch-mode, charge-management solutions for single-cell, Li-ion and Li-polymer batteries used in a wide range of portable applications. 1 2 3 4 Contents Introduction ...............................................................................................................
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Introduction 1 Introduction 1.1 bq2416x IC Features www.ti.com The bq24160/161/163/168 integrates a synchronous PWM controller, power MOSFETs, input-current sensing, high-accuracy current and voltage regulation, charge termination and power path management into a QFN package. The charge parameters can be programmed through an I2C interface. Key integrated circuit (IC) features include: • High-efficiency, fully integrated, NMOS-NMOS, synchronous buck charger with 1.
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Introduction www.ti.com 1.3 Schematic Figure 1.
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Introduction 1.4 1.5 4 www.ti.
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Introduction www.ti.com 1.6 1.7 Control and Key Parameters Setting Jumper Description JP1 1-2 (TS = INT): Connects a potentiometer to the TS so that the potentiometer can emulate a thermistor. The potentiometer has been preset to approximately 3.4 kΩ so that the TS voltage is 0.5 x V (DRV). 1-2 (TS = INT) 2-3 (TS = EXT): Connects the TS pin to an external thermistor. The resistor divider formed by R1 and R3 has been sized to accommodate a 10-kΩ thermistor.
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Test Summary 2 www.ti.com Test Summary This procedure describes one test configuration of the HPA742 evaluation board for bench evaluation. 2.1 Definitions This procedure details how to configure the HPA742 evaluation board. The following naming conventions are followed. See the bq24160/161/163/168 QFN EVM schematic for details.
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Test Summary www.ti.com Figure 2. BAT_Load (PR1010) Schematic 2.2.3 Load #2 Between SYS and GND Although not required, a resistive load capable of sinking up to 3 A can be used. 2.2.4 Meters Four equivalent voltage meters (VM#) and two equivalent current meters (CM#). The current meters must be configured to measure 3-A current. 2.2.5 Computer A computer with at least one USB port and a USB cable. The bq2416x evaluation software must be properly installed. 2.2.
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Test Summary 2.3 www.ti.com Recommended Test Equipment Setup 1. For all power connections, use short, twisted-pair wires of appropriate gauge wire for the maximum current amount. 2. Set Power Supply #1 (PS#1) for 6-V ± 100 mVdc, 3-A ± 100-mA current limit, and then turn off supply. 3. If BAT_Load is the circuit shown in Figure 3, connect Power Supply #2 (PS#2) set to approximately 3.6 V to the input side of BAT_Load, and then turn off PS#2. 4.
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Test Summary www.ti.com VM#1 + V - PS#1 CM#1 A + IIN - V VM#3 + Windows PC USB-TOGPIO CM#2 PS#2 VM#2 A - BAT_Load + ICHRG - + V - V + VM#4 Figure 4. Original Test Setup for bq24160/161/163/168EVM (HPA742) 10. Turn on the computer. • Open the bq2416x evaluation software. The main window of the software is shown in Figure 5.
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Test Summary www.ti.com Figure 5. Main Window of bq2416xSW Evaluation Software 2.4 Recommended Test Procedure The following test procedure is useful for evaluating the charger IC outside of a real system, especially when no battery is available to connect to the output (i.e., Load #1). 2.4.1 Charge Voltage and Current Regulation of IN 1. Ensure that the Section 2.3 steps are followed. 2.
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Test Summary www.ti.com • Set Reset Watchdog Timer to update every 5 seconds. • Set Supply Precedence to IN if not already set. • Uncheck Disable Charging if checked. • Check Enable STAT/INT Outputs. • Set Battery Regulation Voltage to 4.20 V. • Set IN Input Current Limit to 2.5 A. • Set Charge Current to 1000 mA. • Click the READ button at the top of the window and confirm that the previous settings remain. 8.
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Printed-Circuit Board Layout Guideline www.ti.com the maximum charge current. 3 Printed-Circuit Board Layout Guideline 1. To obtain optimal performance, the power input capacitors, connected from the PMID input to PGND, must be placed as close as possible to the bq2416x. 2. Place a 4.7-µF input capacitor as close to PMID pin and PGND pin as possible to make the highfrequency, current-loop area as small as possible.
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Bill of Materials and Board Layout www.ti.com 4 Bill of Materials and Board Layout 4.1 Bill of Materials Table 1. Bill of Materials - HPA742 Count RefDes Value Description Size Part Number MFR 2 C1, C3 1 µF Capacitor, Ceramic, 25V, X5R, 10% 603 Std Std 2 C2, C5 1 µF Capacitor, Ceramic, 6.3V, X5R, 10% 402 Std Std 2 2 C4, C12 47uF Capacitor, Ceramic, 6.3V, X5R, 20% 1206 Std Std 0 0 0 C6, C10 Open Capacitor, Ceramic 1206 Std Std 2 2 2 2 C7, C8 4.
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Bill of Materials and Board Layout www.ti.com Table 1. Bill of Materials - HPA742 (continued) Count RefDes Value Description Size Part Number MFR 0 U1 BQ24161RGE IC, 2.5A, Dual-Input, Single Cell Switch-mode Li-Ion BATTERY CHARGER with QFN3.3X3.3mm BQ24161RGE TI 1 0 U1 BQ24168RGE IC, 2.5A, Dual-Input, Single Cell Switch-mode Li-Ion BATTERY CHARGER with QFN3.3X3.3mm BQ24168RGE TI 0 0 1 U1 BQ24163RGE IC, 2.5A, Dual-Input, Single Cell Switch-mode Li-Ion BATTERY CHARGER with QFN3.
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Bill of Materials and Board Layout www.ti.com 4.2 Board Layout Figure 6.
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Bill of Materials and Board Layout www.ti.com Figure 7.
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Bill of Materials and Board Layout www.ti.com Figure 8.
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Bill of Materials and Board Layout www.ti.com Figure 9.
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Bill of Materials and Board Layout www.ti.com Figure 10.
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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 the product(s) must have electronics training and observe good engineering practice standards.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
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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.
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【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
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EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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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. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.