TI 公司的bq27510是系统侧锂离子电池电量测量和管理器件,采用专利的阻抗跟踪算法进行电池电量测量,提供电池的各种信息如电池剩余容量(mAh),充电状态(%),电池用完时间(分),电池电压(mV)以及温度等. bq27510可用于智能手机,PDA,数码相机和摄像鸡,手持终端,MP3或多媒体播放器.本文介绍了bq27510的主要特性, 典型应用和应用参考电路以及bq27510评估模块(EVM)的主要特性,电路图,和手机与系统负载/充电器连接框图与材料清单.
The Texas Instruments bq27510 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system microcontroller firmware development. The bq27510 resides on the systems main board and manages an embedded battery (non-removable) or a removable battery pack.
The bq27510 uses the patented Impedance Track algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), and temperature (°C).
Battery fuel gauging with the bq27510 requires only PACK+ (P+), PACK- (P-), and Thermistor (T) connections to a removable battery pack or embedded battery.
bq27510主要特性:
Battery Fuel Gauge for 1-Series Li-Ion Applications
Resides on System Main Board
Works with Embedded or Removable Battery Packs
Uses PACK+, PACK-, and T Battery Terminals
Can be Powered Directly From Battery Pack (no LDO required)
Microcontroller Peripheral Provides:
Accurate Battery Fuel Gauging
Battery Low Interrupt Warning
Battery Insertion Indicator
96 Bytes of Non-Volatile Scratch Pad FLASH
Battery Fuel Gauging Based on Patented Impedance Track Technology
Models Battery Discharge Curve for Accurate Time-To-Empty Predictions
Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies
Low-Value Sense Resistor (10 m or less)
I2C for Connection to System Microcontroller Port
Small 12-pin 2,5 mm × 4 mm SON Package
bq27510应用:
Smartphones
PDAs
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players
图1.bq27510典型应用
图2.bq27510应用参考电路
bq27510评估模块(EVM)
This evaluation module (EVM) is a complete evaluation system for the bq27510. The EVM includes one bq27510 circuit module, a current sense resistor, one thermistor, an EV2300 PC interface board for gas gauge interface, a PC USB cable, and Windows-based PC software. The circuit module includes one bq27510 integrated circuit and all other onboard components necessary to monitor and predict capacity for a system-side fuel gauge solution. The circuit module connects directly across the battery pack. With the EV2300 interface board and software, the user can read the bq27510 data registers, program the chipset for different pack configurations, log cycling data for further evaluation, and evaluate the overall functionality of the bq27510 solution under different charge and discharge conditions.
bq27510评估模块主要特性:
Complete evaluation system for the bq27510 gas gauge with Impedance Track technology
Populated circuit module for quick setup
Personal computer (PC) software and interface board for easy evaluation
Software that allows data logging for system analysis
bq27510.评估模块所包含内容:
NTC103AT thermistor
Set of support documentation
USB connection cable to interface board
bq27510 circuit module (HPA329)
图3.bq27510评估模块电路图
图4.bq27510电路模块和手机与系统负载/充电器连接框图
材料清单(BOM):
