大疆无人机都在用的CW2015 1-2节电池电量计芯片

2018-9-25 11:29:03 7526

0 大疆无人机都在用的CW2015 1-2节电池电量计芯片，指定芯片，原因是简单易用，没有ti那么复杂，电池一次采集数据，使用终身，精度1-3% The CW2015 is an ultra‐compact, low‐cost, host‐side/pack‐side, sensing resistor free, fuel gauging system IC for Lithium‐ion(Li+) based batteries in handheld and portable devices. CW2015 tracks Li+ battery’s operational condition and uses state‐of‐art algorithm to report the relative State‐of‐Charge (SOC) of very different battery chemistry systems (LiCoOx, polymer Li‐ion, LiMnOx etc.). CW2015 includes a 14‐bit Sigma‐Delta ADC, a precision voltage reference and build‐in accurate temperature sensor. The IC allows the end‐user to eliminate the expensive sensing resistor which occupies large board area. And the IC also sends out the alarm signal if the battery SOC level reaches pre‐programmed threshold. Quick start function offers the possibility to make an initial estimation of the battery’s SOC, which also enables the IC to be located on system side or pack side, giving the flexibility to system maker on pack choice. CW2015 uses a 2‐wire I2C compatible serial interface that operates in standard (100 kHz), fast (400 kHz). Features • System‐Side or Pack‐Side Fuel Gauging • 3% Maximum Total SOC Measurement Error • 14‐bit Delta Sigma ADC for Temperature and Cell Voltage Measurement • Precision Voltage Measurement • No Offset Accumulation During Life Time • No Full‐to‐Empty Battery Learning Cycles Necessary • No Sense Resistor Required • SOC and RRT available • External Alarm/Interrupt for Low‐Battery Warning Available • Patented “FastCali” gas gauging algorithm • Very Low Active and Sleep Power Consumption - Normal mode 15uA - Sleep mode <1uA • General I2C interface • Tiny, Lead(Pb)‐Free, 8‐Pin TDFN Package Applications • Smartphone • Tablet PCs • Handheld and Portable Applications Typical Application 0
2018-9-25 11:29:03　　评论淘帖0 举报相关推荐 • 电量计芯片CW2015 2949 • 单节和多节电池电量计的区别 5170 • CellWise CW2015电池电量计专用集成电路介绍 764 • 在2786节电池组中使用DS2电池电量计 719 • 在2节电池组中使用DS2786电池电量计 1074 • DS2786电池电量计在2节电池应用的主机侧使用 1047 • 电池电量计 0 • 电池电量计的应用设计 1845 • 单节锂电池电量计［智能电量计］ 22 • 电池电量计有什么困扰 2450