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基于Linear公司的LTC3305电池充电平衡器解决方案

来源: 中电网
2019-03-15
类别:电源管理
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文章创建人 拍明芯城

原标题:Linear LTC3305电池充电平衡器解决方案

  Linear公司的LTC3305是四个串接铅酸电池平衡器,集成了所有的电压检测,栅极驱动和故障检测电路.LTC3305可单独工作而不需要任何外接控制电路.主要用在通信备份系统,工业电力汽车,能源存储系统(ESS)和医疗设备.本文介绍了LTC3305特性,框图和几种应用电路,以及铅酸电池平衡器演示板2043A主要指标,电路图和材料清单.

  The LTCR3305 balances up to 4 lead-acid batteriesconnected in series. All voltage monitoring, gate drive,and fault detection circuitry is integrated. The LTC3305is designed for standalone operation and does not requireany external control circuitry.

  The LTC3305 employs an auxiliary battery or an alternativestorage cell to transfer charge to or from each individualbattery in the stack. A mode pin provides two operatingmodes, timer mode and continuous mode. In timer mode,once the balancing operation is completed, the LTC3305 goes into a low power state for a programmed time and thenperiodically rebalances the batteries. In continuous mode,the balancing operation continues even after the batteries are balanced to their programmed termination voltage.

  The LTC3305 is available in a thermally enhanced 38-leadTSSOP package.

  LTC3305特性:

  Single IC Balances Up to Four 12V Lead-AcidBatteries in Series

  All NFET Design

  Stackable to Balance Larger Series Battery Packs

  Standalone Operation Requires no External μP orControl Circuitry

  Balancing Current Limited by External PTC Thermistor

  Continuous Mode and Timer Mode

  Programmable UV and OV Fault Thresholds

  Programmable Termination Time and TerminationVoltage

  Thermally Enhanced 38-Lead TSSOP Package

  LTC3305应用:

  Telecom Backup Systems

  Home Battery Powered Backup Systems

  Industrial Electric Vehicles

  Energy Storage Systems (ESS)

  Medical Equipment

  图1.LTC3305框图

  图2.LTC3305四电池平衡器:可编程高低故障电压

  图3.LTC3305两电池应用电路:外部开关安排

  图4.LTC3305三电池应用电路:外部开关安排

  图4.LTC3305预充电电路:采用LTC3630A和LTC1440

  图5.四电池应用电路:外接电路限制功耗

  图6.三个LTC3305连接来平衡八个铅酸电池

  图7.两个LTC3305连接来平衡六个铅酸电池

  图8.采用两个的八个电池平衡池

  铅酸电池平衡器演示板2043A

  Demonstration circuit 2043A is a lead Acid Battery Balancerfeaturing the LTC®3305. The LTC3305 balances up to 4lead acid batteries connected in series and incorporates allvoltage monitoring, gate drive and fault detection circuitry.

  The LTC3305 employs an auxiliary battery or an alternativestorage cell to transfer charge to or from each individualbattery within the stack. There are two operating modes,TIMER mode and CONTINUOUS mode, selected by theMODE pin. In TIMER mode, once the balancing operation is complete, the LTC3305 goes to a low power state fora programmed time and then periodically rebalances thebatteries. In CONTINUOUS mode, the balancing operationcontinues even after the batteries are balanced to theirprogrammed termination voltage.

  The LTC3305EFE is available in a 7mm × 7mm 38-leadTSSOP surface mount package with exposed pad.

  图9.演示板2043A外形图

  演示板2043A主要指标:

  图10.演示板2043A测量建立图

  图11.演示板2043A电路图

  演示板2043A材料清单:


责任编辑:HanFeng

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标签: Linear 平衡器

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