Battery Power Management for Portable Devices -- Contents -- Preface -- Acknowledgments -- Foreword -- 1 Battery Chemistry Fundamentals and Chara -- 1.1 Introduction -- 1.2 Battery Fundamentals and Electrical -- 1.3 General Battery Characteristics -- 1.3.1 Chemical Capacity and Energy -- 1.3.2 Battery Impedance -- 1.3.3 Usable Capacity -- 1.3.4 Power Capability and the Ragone Pl -- 1.3.5 Durability, Cycle Life, and Shelf- -- 1.3.6 Self-Discharge Properties -- 1.4 Monitoring and Safety -- 1.5 Overview of Different Battery Techno -- 1.5.1 Lead Acid -- 1.5.2 Nickel Cadmium -- 1.5.3 Nickel Metal-Hydride -- 1.5.4 Lithium Ion Battery -- 1.5.5 Battery Chemistries Overview -- References -- 2 Battery Charger Techniques -- 2.1 Lead-Acid Battery Charger -- 2.2 NiCd and NiMH Battery Charger -- 2.2.1 Nickel-Based Battery Charge Charac -- 2.2.2 NiMH Battery Charger Design Exampl -- 2.3 Li-Ion and Li-Polymer Battery Charge -- 2.3.1 Li-Ion and Li-Polymer Charge Chara -- 2.3.2 Charge Temperature Qualification a -- 2.3.3 Linear Battery Charger -- 2.3.4 Switch-Mode Battery Charger -- 2.3.5 Switch-Mode Battery Charger Design -- 2.3.6 USB Battery Charging -- 2.3.7 Port Detecting and Self-Enumeratin -- 2.4 Battery Charger and System Interacti -- 2.5 Dynamic Power Management Battery Cha -- 2.5.1 System Bus Voltage-Based Dynamic P -- 2.5.2 Input Current-Based Dynamic Power -- 2.5.3 Switch-Mode DPM Battery Charger wi -- 2.5.4 Narrow Voltage Direct Current (NVD -- 2.5.5 Battery Charging System Topology C -- 2.6 Battery Charger Design Examples in E -- 2.6.1 Tablet Charger Design Example -- 2.6.2 Notebook and Ultrabook Battery Cha -- 2.7 LiFePO Battery Charger -- 2.8 Wireless Charging Technology -- 2.9 Solar Charging System -- References -- 3 Battery Safety and Protections -- 3.1 Introduction -- 3.2 Safety Events Triggered External to.

3.2.1 Overvoltage Applied to a Battery P -- 3.2.2 Overdischarge -- 3.2.3 Overcurrent During Discharge -- 3.2.4 Overcurrent During Charge -- 3.3 Safety Events Triggered Inside the B -- 3.3.1 Pack Internal Short Circuit -- 3.3.2 Cell Overvoltage -- 3.3.3 Cell Internal Short Circuit -- 3.4 Final Thoughts -- References -- 4 Cell-Balancing Techniques: Theory and Im -- 4.1 Introduction -- 4.2 Types of Battery Cell Imbalance That -- 4.2.1 State-of-Charge (SOC) Imbalance -- 4.2.2 Total Capacity Differences -- 4.2.3 Impedance Differences -- 4.3 Effect of Imbalancing on Performance -- 4.3.1 Premature Cell Degradation Through -- 4.3.2 Safety Hazards Resulting from Over -- 4.3.3 Early Charge Termination Resulting -- 4.3.4 Early Discharge Termination -- 4.4 Hardware Implementation of Balancing -- 4.4.1 Current Bypass -- 4.4.2 Charge Redistribution -- 4.4.3 Charge Shuttles -- 4.4.4 Inductive Converter-Based Cell Bal -- 4.5 Balancing Algorithms -- 4.5.1 Cell Voltage Based -- 4.5.2 SOC Based -- 4.5.3 SOC and Total Capacity Based -- 4.6 Summary -- 5 Battery Fuel Gauging: State of Charge, R -- 5.1 Introduction -- 5.2 State of Charge and Accuracy Definit -- 5.3 Basic Battery Remaining Capacity Mon -- 5.3.1 Voltage Correlation -- 5.3.2 Voltage Correlation with IR Correc -- 5.3.3 Hardware Implementation of Voltage -- 5.3.4 Coulomb Counting: Current Integrat -- 5.3.5 Coulomb Counting with Voltage-Base -- 5.3.6 Hardware Implementation of Coulomb -- 5.4 Advanced Gauging Methods: Impedance -- 5.4.1 Basic Concept -- 5.4.2 Voltage Correlation in IT -- 5.4.3 Full Chemical Capacity (Q) Update -- 5.4.4 Battery Impedance Update in IT -- 5.4.5 Thermal Modeling to Account for Te -- 5.4.6 Load Modeling -- 5.4.7 Bringing It All Together: Predicti -- 5.4.8 State of Health -- 5.4.9 Hardware Implementation of IT Algo -- 5.5 Host-Side and Pack-Side Gauging -- 5.6 Summary.

6 System Considerations -- 6.1 Introduction -- 6.2 Battery Pack Electronics: General Co -- 6.3 Battery Pack ESD Design Consideratio -- 6.3.1 ESD Fundamentals -- 6.3.2 Where Does the Current Flow During -- 6.3.3 ESD Design Hardening -- 6.3.4 Pack Insertion Issues -- 6.4 Electromagnetic Interference (EMI) S -- 6.4.1 EMI Solutions in the Battery Manag -- 6.4.2 EMI Design Considerations in Batte -- 6.4.3 Measuring the EMI -- 6.4.4 Conducted EMI -- 6.4.5 Approach for Minimizing Conducted -- 6.4.6 Approach for Minimizing Common Mod -- 6.4.7 Minimizing the Radiated EMI -- 6.5 Power Components and PCB Thermal Des -- 6.6 Assuring That an Intended Battery Is -- References -- 7 Design Examples: Complete Battery Soluti -- 7.1 Introduction -- 7.2 Cell Phones and Smartphones -- 7.2.1 Battery Selection -- 7.2.2 Battery Pack Electronics -- 7.2.3 Battery Charging -- 7.3 Tablet Computers -- 7.3.1 Battery Pack Electronics -- 7.3.2 Battery Charging -- 7.4 Notebook PCs -- 7.4.1 Battery Selection -- 7.4.2 Battery Pack Electronics -- 7.4.3 Battery Charging -- 7.5 Ultrabooks -- 7.5.1 Battery Selection -- 7.5.2 Battery Pack Electronics -- 7.5.3 Charging and Power Architecture -- 7.5.4 Ultrabook Battery Charger Design E -- 7.6 Digital Cameras -- 7.6.1 Battery Pack Electronics -- 7.6.2 Battery Charging -- 7.7 Industrial and Medical Handheld Devi -- 7.7.1 Battery Selection -- 7.7.2 Battery Pack Electronics -- 7.7.3 Battery Charging -- 7.8 Conclusion -- About the Authors -- Index.