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bq2435x DSG EVM for Li-Ion Charger Front-End
This user's guide describes the features, setup, and operation of the bq2435xEVM evaluation module.
Included are the bill of materials, board layout, and schematic.
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Bill of Materials
SLUU365 - June 2009
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Contents
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List of Figures
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List of Tables
bq2435x DSG EVM for Li-Ion Charger Front-End Protection IC
User's Guide
SLUU365 - June 2009
Protection IC
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Table of Contents
Related Manuals for Texas Instruments bq2435 Series
Summary of Contents for Texas Instruments bq2435 Series
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Page 1: Table Of Contents
User's Guide SLUU365 – June 2009 bq2435x DSG EVM for Li-Ion Charger Front-End Protection IC This user's guide describes the features, setup, and operation of the bq2435xEVM evaluation module. Included are the bill of materials, board layout, and schematic. Contents ........................ -
Page 2: Introduction
Introduction www.ti.com Introduction General Description The bq2435x evaluation module (EVM) is a complete charger module for evaluating a charger front-end protection and charger solution using the bq2435x 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 protection current is designed to 1.2 A. -
Page 3: Recommended Operating Conditions
Test Summary www.ti.com Jack Description Factory Setting bq2057C VCC pin connection to bq2435x Jumper on bq2057C CC pin connection to bq2435x Jumper on If on, low-side current sensing resistor is disabled Jumper off Recommended Operating Conditions Symbol Description Minim Typical Maxim Unit Supply voltage, V... -
Page 4: Equipment Setup
Test Summary www.ti.com 2.2.2 Load 1 A 10-V (or above), 2-A (or above) electronic load that can operate at constant current mode. 2.2.3 Load 2 A 10-V (or above), 2-A (or above) electronic load that can operate at constant voltage mode. 2.2.4 Meters Four Fluke 75 multimeters (equivalent or better) -
Page 5: Procedure
Test Summary www.ti.com HPA398 bq243 Power BAT- Load Supply 1 BAT+ Ibat CFET APPLICATION CIRCUIT Load Figure 1. Original Test Setup for HPA398 (bq2435x DSG EVM) Procedure 2.4.1 Charger Current and Voltage Regulation 1. Ensure that steps in Section 2.3 are followed. -
Page 6: Pcb Layout Guideline
PCB Layout Guideline www.ti.com PCB Layout Guideline 1. It is critical that the exposed power pad on the backside of the bq2435x package be soldered to the printed-circuit board (PCB) ground. Ensure that sufficient thermal vias are located underneath the IC, connecting to the ground plane on the other layers. -
Page 7: Board Layout
Bill of Materials, Board Layout, and Schematic www.ti.com Table 1. Bill of Materials (continued) bq24350 bq24352 - bq24355 - RefDes Value Description Size Part Number -001 Resistor, Chip, 1/16-W, 5% 6-32 NYL nuts NY HN 632 H620-ND Building Fasteners ST1,ST2,S 4816 STANDOFF M/F HEX 6-32 sf_thvt_325_rn... -
Page 8: Bottom Layer
Bill of Materials, Board Layout, and Schematic www.ti.com Figure 3. Bottom Layer Figure 4. Top Silk Screen bq2435x DSG EVM for Li-Ion Charger Front-End Protection IC SLUU365 – June 2009 Submit Documentation Feedback... -
Page 9: Top Assembly
Bill of Materials, Board Layout, and Schematic www.ti.com Figure 5. Top Assembly SLUU365 – June 2009 bq2435x DSG EVM for Li-Ion Charger Front-End Protection IC Submit Documentation Feedback... -
Page 10: Schematic
Bill of Materials, Board Layout, and Schematic www.ti.com Schematic Figure 6. bq243550 Schematic bq2435x DSG EVM for Li-Ion Charger Front-End Protection IC SLUU365 – June 2009 Submit Documentation Feedback... - Page 11 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.
- Page 12 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...
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