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| ADP5360高档电池管理PMIC解决方案 |
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| 文章来源：永阜康科技 更新时间：2020/1/4 10:12:00 |
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ADI公司的ADP5360是用于单个锂电池(Li离子)/锂聚合物电池(Li-Poly)的高性能线性充电器,具有可编程超低静态电流电量计和电池保护电路,一个超低静态电流的降压转换器,一个降压升压开关稳压器,以及能监测输出电压的监视电路.ADP5360充电器工作电压高达6.8V,以防止USB总线在断路或连接时出现峰值.器件在线性充电器输出和电池节点间具有内部隔离的场效应晶体管(FET).当设备在电池过充和过度放电故障条件下,电池所有的保护特性会激活.ADP5360电量计采用基于电压的算法,并报告实时电池充电状态(SOC),以用于有超低静态电流的确可充电锂电池.器件的工作结温为−40℃到 +85℃.主要用在以电池为能源的可充电锂/锂聚合物电池,手持消费类电子设备,手持医疗设备和可穿戴设备.本文介绍了ADP5360主要特性,功能框图和应用框图,手持健康设备锂电池充电应用电路以及评估板ADP5360CB-EVALZ主要特性,电路图,材料清单和PCB设计图.
The ADP5360 combines one high performance linear charger for a single lithium-ion (Li-Ion)/lithium-polymer (Li-Poly) battery with a programmable, ultralow quiescent current fuel gauge and battery protection circuit, one ultralow quiescent buck, one buck boost switching regulator, and a supervisory circuit that can monitor output voltage.
The ADP5360 charger operates at up to 6.8 V to prevent USB bus spiking during disconnect or connect scenarios.
The ADP5360 features an internal isolation field effect transistor (FET) between the linear charger output and the battery node. The full battery protection features are activated when the device is in the battery overcharge and overdischarge fault conditions.
The ADP5360 fuel gauge uses a voltage-based algorithm with an adaptive filter limitation solution. The fuel gauge reports real-time battery state of charge (SOC) for the rechargeable Li-Ion battery with ultralow quiescent current.
The ADP5360 buck regulator operates at 1.0 MHz switching frequency in forced pulse-width modulation (FPWM) mode. In hysteresis mode, the regulator achieves excellent efficiency at a low output power.
The ADP5360 buck boost regulator only operates in hysteresis mode and outputs a voltage less than or greater than the battery voltage.
The ADP5360 supervisory circuits monitor the regulator output voltage and provide a power-on reset signal to the system. A watchdog timer and an external pushbutton can reset the microprocessor.
The I2C-compatible interface enables the programmability of all battery charging parameters, the protection threshold, the buck output voltage, and the status bit readback.
The ADP5360 operates over the −40℃ to +85℃ junction temperature range and is available in a 32-ball, 2.56 mm × 2.56 mm wafer level chip scale package (WLCSP).
ADP5360主要特性:
Linear battery charger
High accuracy and programmable charge terminal voltage and charge current up to 320 mA
Compliant with JEITA charge temperature specification
Li-Ion and Li-Poly battery monitor and protection
Voltage-based fuel gauge with adaptive filter limitation
Independent battery protection of overcharge and overdischarge
Temperature sensor with external NTC
Ultralow quiescent current buck converter
Quick output discharge option
Ultralow quiescent current buck boost converter
Quick output discharge option
Supervisory with manual reset (MR) and watchdog timer
Shipment mode extends battery life
Full I2C programmability with dedicated interrupt pin
ADP5360应用:
Rechargeable Li-Ion/Li-Poly battery-powered devices
Portable consumer devices
Portable medical devices
Wearable devices
图1.ADP5360功能框图
图2.ADP5360应用框图
图3.ADP5360手持健康设备锂电池充电应用电路
评估板ADP5360CB-EVALZ
Evaluating the ADP5360 Advanced Battery Management PMIC with Ultralow IQ Buck and Buck Boost
This user guide describes the hardware and software used in the ADP5360CB-EVALZ evaluation board and includes detailed schematics and printed circuit board (PCB) layouts. The ADP5360 includes a high performance linear regulator for single Li-ion/Li-ion battery charging, ultralow quiescent current fuel gauge and battery protection circuit, an ultralow quiescent buck and a buck boost switching regulator, and a supervisory circuit. The ADP5360CB-EVALZ evaluation board supports an external USB dongle connection and the graphic user interface (GUI) software allows the user to evaluate the comprehensive functionalities provided by the I2C interface. The ADP5360 operates over the −40°C to +85°C junction temperature range and is available in a 32-ball, 2.56 mm × 2.56 mm WLCSP. More information on the ADP5360 is provided in the ADP5360 data sheet, available from www.analog.com, which must be consulted in conjunction with this evaluation board user guide.
评估板ADP5360CB-EVALZ主要特性:
VBUS input voltage: 4.0 V to 6.5 V
Fully featured evaluation board for the ADP5360
Evaluation software and installation CD included
Simple device measurements and demonstrable with
A voltage power supply
A battery or battery simulator
A voltage meter
Load resistors or an electrical load
图4.评估板ADP5360CB-EVALZ外形图
图5.评估板ADP5360CB-EVALZ电路图
评估板ADP5360CB-EVALZ材料清单:
图6.评估板ADP5360CB-EVALZ PCB设计图(1):顶层
图7.评估板ADP5360CB-EVALZ PCB设计图(2):第二层
图8.评估板ADP5360CB-EVALZ PCB设计图(3):第三层
图9.评估板ADP5360CB-EVALZ PCB设计图(4):底层
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