原标题：Rohm BD99954应用处理器锂电池充电管理方案

　　rohm公司的BD99954是1到4节锂电池双模式充电管理器,小型5.0x5.0mm QFN封装和2.6x3.0mm芯片级CSP封装,提供双源电池充电器,两个端口BC1.2检测和用于电压,电流,温度的电池监视器以及告警控制器.主要用在空间严格限制的设备如小尺寸笔记本电脑,平板电脑和其它应用.本文介绍了BD99954主要特性,功能框图,应用电路以及评估板BD99954MWV EVK主要特性,电路图,USB-I2C电路图,材料清单和PCB设计图.

　　The Industry ’s First Dual-Mode Battery Charge ICBD99954 is a Battery Management LSI for 1-4 cellLithium-Ion secondary battery, and available in a 40pin0.40 mm pitch 5.0 mm x 5.0 mm QFN package and small41-ball 0.4mm pitch 2.6mm x 3.0mm Wafer-Level CSP package which is designed to meet high degree demandsfor space-constraint equipment such as Low profileNotebook PC, Tablets and other applications.

　　BD99954 provides a Dual-source Battery Charger, twoport BC1.2 detection and a Battery Monitor with severalalarm(INT#, PROCHOT#) outputsBD99954 is a Battery Manager IC for 1-4Cell Lithium-Ion / Lithium-Ion polymer secondary battery pack used in portableequipment such as Tablets, Ultra books or others.

　　BD99954 includes a Battery Charger, two port BC1.2 detection, a Battery Monitor for voltage, current, temperature andalarm(INT#, PROCHOT#) Controller.

　　BD99954主要特性:

　　 Dual-source Battery Charger

　　 High efficiency Step-Up/Down switching charger for1-4 cell Li-Ion/Li-poly battery

　　 Two separate input sources for USB-VBUS and DCadapter.

　　 Two port BC1.2 detectors.

　　 JEITA compliant charging profile

　　 Programmable parameters for Preconditioning, Prechargecurrent,and Fast-charge current

　　 Programmable charging voltage

　　 Programmable charge current

　　 Programmable Switching Frequency: 600kHz to1.2MHz

　　 Support USB BCS 1.2, ACA, ID pin, OTG

　　 USB-VBUS Over Voltage Protection

　　 Over Voltage Battery Protection

　　 Battery Short Circuit Detection

　　 Power Path Management with charge pump gatedriver

　　 Flexibility power path control

　　 Reverse Buck/Boost Option for USB/USB-PD

　　 Bias voltage output for the external thermistor

　　 PMON output

　　 PROCHOT# output

　　 Support Inhibit / Autonomous Charging

　　 Battery Learn Function

　　 Input Operating Range: 3.8V to 25V

　　 Voltage Measurement for Thermistor.

　　 Bias voltage output for the external thermistor.

　　 SMBus Interface (Clock up friendly I2C) for Hostcommunication

　　 Embedded OTPROM for initial settings

　　BD99954应用:

　　 Ultrabook

　　 Notebook PC

　　 Ultra-mobile PC

　　 Tablet PC

　　图1.BD99954功能框图

　　评估板BD99954MWV EVK

　　This application note provides information on the BD99954MWV EVK board, which includes the bill of materials, schematics, boardlayout, and application data. In addition to this, a user manual for the I2C control software is included to help program theBD99954MWV.

　　The BD99954MWV EVK acts as a platform for the BD99954 battery management LSI. With the included software GUI, users canaccess the battery charging profile and modify and read back the registers of the BD99954.

　　评估板BD99954MWV EVK应用:

　　1-4 Li-ion Cells (in series) Battery Charging

　　评估板BD99954MWV EVK主要特性:

　　Reverse Buck/Boost Option

　　On-Board USB-to-I2C Communication Circuit

　　Input Operating Range: 3.8V to 25V

　　评估板BD99954MWV EVK工作极限和最大值:

　　图.评估板BD99954MWV EVK外形图

　　评估板BD99954MWV EVK材料清单:

　　USB-I2C材料清单:

　　详情请见:

bd99954mwv-evk-101_ug-e.pdf

bd99954xxx-e.pdf