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User's Guide
SLUU477–December 2010
800mA, Single-Input, Single Cell Li-Ion Battery Solar
Charger with Power Path
This user's guide describes the features and operation of the bq24210EVM Evaluation Module (EVM). The
EVM assists users in evaluating the bq24210 solar chager. The EVM is also called the HPA678. The
manual includes the bq24210EVM bill of materials, board layout, and schematic.
Contents
1 Introduction .....................................................................................
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Introduction www.ti.com 1 Introduction 1.1 EVM Features • Evaluation Module for bq24210 • 800mA, Single-Input, Single Cell Li-Ion Battery Solar Charger with Power Path • Resistor-programmable setting for charge current and input voltage dynamic power management • LED Indication for Status • Test Points for Key Signals Available for Testing Purpose – Easy Probe Hook-up • Jumpers Available – Easy to Change Setting 1.2 General Description The bq24210 series of devices are highly integrated Li-ion l
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www.ti.com Introduction 1.4 Control and Key Parameters Setting Table 2. Control and Key Parameters Setting Jack Description Factory Setting JP1 Programs the fast-charge current setting. 500mA when JP1 ON; external setting Jumper OFF (external setting) when JP1 OFF JP2 Connect /EN and /PG together when JP2 ON to enable charger when power present Jumper OFF (external /EN) JP3 Programs the input voltage regulation threshold. 4.5V when JP3 ON; external setting Jumper OFF (external setting) when JP3
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Test Summary www.ti.com 2 Test Summary 2.1 Definitions This procedure details how to configure the HPA678 evaluation board. On the test procedure, the following naming conventions are followed. VXXX : External voltage supply name (VBUS, VBAT) LOADW: External load name (LOADR, LOADI) V(TPyyy): Voltage at internal test point (TPyyy). For example, V(TP1) means the voltage at TP1. V(Jxx): Voltage at jack terminal (Jxx). V(XXX): Voltage at (XXX). For example, V(VDPM) means the voltage at the test poi
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www.ti.com Test Summary 2.5 Equipment 2.5.1 Power Supplies Power Supply #1 (PS#1): a power supply capable of supplying 20-V at 1-A is required. 2.5.2 Loads LOAD #1 A 20V (or above), 1A (or above) electronic load that can operate at constant current and constant voltage mode. Or: equivalent. 2.5.3 Meters Four Fluke 75 multi-meters, (equivalent or better) Or: Two equivalent voltage meters and two equivalent current meters. The current meters must be capable of measuring 1A+ current. 2.6 Equipment
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PCB Layout Guideline www.ti.com 2.7 Procedure 2.7.1 Power Supply Make sure EQUIPMENT SETUP steps are followed. Disconnect LOAD #1. Turn on PS#1. Measure → V(J1(VBUS)) = 6.5V ± 200mV Measure → V(J2(VBAT)) = 0V ± 200mV Measure → V(J4(VTSB)) = 0V ± 200mV Observe → D1 (PG) ON, D2 (CHG) OFF 2.7.2 Charger Enable and Battery Detection Connect JP1; Connect 2-3 of JP7 (Charger ON) Measure → V(J4(VTSB)) = 2.2V ± 300mV Connect 2-3 of JP5 (Internal TS); Adjust R6 until V(JP4-1) = 0.7V ± 200mV Measure → V(J2
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www.ti.com Bill of Materials, Board Layout and Schematics 4 Bill of Materials, Board Layout and Schematics 4.1 Bill of Materials Table 4. Bill of Materials -001 RefDes Value Description SIZE Part Number MFR 1 C1 10 µF Capacitor, Ceramic, 25V,X7R, 10% 1206 STD STD 2 C2, C4 0.1 µF Capacitor, Ceramic, 25V, X7R, 10% 0603 STD STD 1 C3 10 µF Capacitor, Ceramic, 6.3V, X7R, 10% 0805 STD STD 0 C5, C6 Open Capacitor, Ceramic, 25V, X7R, 10% 0603 STD STD 2 D1, D2 LTST-C190CKT Diode, LED, Red, 1.8-V, 20-mA,
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Bill of Materials, Board Layout and Schematics www.ti.com 4.2 Board Layout Figure 2. Top Assembly 8 800mA, Single-Input, Single Cell Li-Ion Battery Solar Charger with Power Path SLUU477–December 2010 Submit Documentation Feedback © 2010, Texas Instruments Incorporated
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www.ti.com Bill of Materials, Board Layout and Schematics Figure 3. Top Layer 9 SLUU477–December 2010 800mA, Single-Input, Single Cell Li-Ion Battery Solar Charger with Power Path Submit Documentation Feedback © 2010, Texas Instruments Incorporated
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Bill of Materials, Board Layout and Schematics www.ti.com Figure 4. Bottom Layer 10 800mA, Single-Input, Single Cell Li-Ion Battery Solar Charger with Power Path SLUU477–December 2010 Submit Documentation Feedback © 2010, Texas Instruments Incorporated
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www.ti.com Bill of Materials, Board Layout and Schematics 4.3 Schematics Figure 5. bq24210 EVM Schematic 11 SLUU477–December 2010 800mA, Single-Input, Single Cell Li-Ion Battery Solar Charger with Power Path Submit Documentation Feedback © 2010, Texas Instruments Incorporated
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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. As such, the goods being provided are not intended to be
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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 and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the t
