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| ADP5360高檔電池管理PMIC解決方案 |
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| 文章來源：永阜康科技 更新時間：2020/1/4 10:12:00 |
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ADI公司的ADP5360是用于單個鋰電池(Li離子)/鋰聚合物電池(Li-Poly)的高性能線性充電器,具有可編程超低靜態(tài)電流電量計和電池保護電路,一個超低靜態(tài)電流的降壓轉換器,一個降壓升壓開關穩(wěn)壓器,以及能監(jiān)測輸出電壓的監(jiān)視電路.ADP5360充電器工作電壓高達6.8V,以防止USB總線在斷路或連接時出現(xiàn)峰值.器件在線性充電器輸出和電池節(jié)點間具有內部隔離的場效應晶體管(FET).當設備在電池過充和過度放電故障條件下,電池所有的保護特性會激活.ADP5360電量計采用基于電壓的算法,并報告實時電池充電狀態(tài)(SOC),以用于有超低靜態(tài)電流的確可充電鋰電池.器件的工作結溫為−40℃到 +85℃.主要用在以電池為能源的可充電鋰/鋰聚合物電池,手持消費類電子設備,手持醫(yī)療設備和可穿戴設備.本文介紹了ADP5360主要特性,功能框圖和應用框圖,手持健康設備鋰電池充電應用電路以及評估板ADP5360CB-EVALZ主要特性,電路圖,材料清單和PCB設計圖.
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應用:
Rechargeable Li-Ion/Li-Poly battery-powered devices
Portable consumer devices
Portable medical devices
Wearable devices
圖1.ADP5360功能框圖
圖2.ADP5360應用框圖
圖3.ADP5360手持健康設備鋰電池充電應用電路
評估板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.
評估板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
圖4.評估板ADP5360CB-EVALZ外形圖
圖5.評估板ADP5360CB-EVALZ電路圖
評估板ADP5360CB-EVALZ材料清單:
圖6.評估板ADP5360CB-EVALZ PCB設計圖(1):頂層
圖7.評估板ADP5360CB-EVALZ PCB設計圖(2):第二層
圖8.評估板ADP5360CB-EVALZ PCB設計圖(3):第三層
圖9.評估板ADP5360CB-EVALZ PCB設計圖(4):底層 |
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