ISL78714

Request Full Datasheet

Automotive Grade Multi-Cell Li-Ion Battery Manager

Product Status: Mass Production

OVERVIEW

The ISL78714 automotive grade Li-ion battery manager IC supervises up to 14 series connected cells and is optimized to meet stringent automotive performance, reliability, and safety requirements. The device provides all the functions expected of such a critical component in a battery management system, such as accurate cell voltage and temperature monitoring, cell balancing, and extensive system diagnostics.

In a typical configuration, a master ISL78714 communicates to a host microcontroller through an SPI port and up to 29 additional ISL78714 devices connected together by a robust, proprietary, two-wire daisy chain. This communication system is highly flexible and can be implemented with capacitor isolation, transformer isolation, or a combination of both.

Three cell balancing modes are included: Manual Balance mode, Timed Balance mode, and Auto Balance mode. Auto Balance mode terminates balancing after a host-specified amount of charge has been removed from every cell.

The ISL78714 is packaged in a 64 pin TQFP and is specified for operation from -40?C to +105?C.

KEY FEATURES

  • Monitors and manages up to 14 cells; all standard Li-Ion cell chemistries
  • Supports ASIL D systems
  • Robust two-wire daisy chain communications system using capacitor or transformer coupling at up to 1Mbps
  • High security communications protocol per ISO26262
  • Cell voltage measurement accuracy
  • 1.65V to 4.28V; -20?C to +85?C:
  • Initial Device accuracy: ±2mV
  • Post board assembly Device accuracy: ±2.5mV
  • Cell input range: ±5.0V, negative voltages ideal for bus bars
  • Up to six external temperature monitoring inputs
  • Internal temperature monitoring with warning flag
  • Two general purpose I/O pins
  • Automatic sensing of position in battery stack
  • Measures and performs read-back on all voltages, temperatures, and diagnostics for 112 cells in less than 10ms
  • User-selectable cell measurement averaging function
  • 14-bit voltage and temperature measurements
  • Integrated system diagnostics for all key functions
  • Watchdog shuts down device if communication is lost
  • Pb-free (RoHS compliant)
  • Long term drift: -0.31 log(khrs)
  • Fully tolerant to EMC and transients
  • ?

    ?

    APPLICATIONS

  • Hybrid Electric Vehicle (HEV), Plug-in Hybrid Electric Vehicle (PHEV), and Electric Vehicle (EV) battery packs
  • Electric motorcycle battery packs
  • Backup battery and energy storage systems requiring high accuracy management and monitoring
  • Portable and semi-portable equipment

PARAMETRICS

Parameters
ISL78714
Basic Information
生产状态
Mass Production
#串联电池
up to 14 Cells
通信接口
SPI and Proprietary Asynchronous
实施
Pack
电量平衡
External (Built-in FET Drivers) or Internal
电池组电压
up to 70V per Device
绝对电池电压测量精度
2.0mV Max (-20°C to 85°C)
集成充电/放电FET驱动
No
集成电流感应/检测
No
集成温度检测
Yes
IS (最大值)
(typ) 5.6 mA
SHDN ICC
(typ) 19 ?A
集成调节器输出/基准输出
3.3V / 2.5V
特殊功能
*Daisy Chain up to 30 devices (420 Cells)
*Robust Hot Plug Performance
*Provides Diagnostic Information
*Fast Scan Rate of 20?s/cell
封装
64Ld TQFP (10x10mm)
资质级别
Automotive

文档

相关视频

3:26
Advanced multi-cell balancing solutions improve vehicle safety through unmatched measurement accuracy and improved system diagnostics.
3:18
Learn how to set-up the ISL78610 and ISL78600 evaluation boards in daisy chain configurations and watch a quick overview of the GUI software.
7:12
The ISL78610 is an AEC-Q100 compliant, automotive grade battery monitor and management IC, intended for use with Lithium chemistry batteries.
8:14
This webinar discusses the ISL78693 AEC-Q100 automotive-grade, fully integrated, 3.6V single-cell battery charger for LiFePO? batteries.
3:26
Advanced multi-cell balancing solutions improve vehicle safety through unmatched measurement accuracy and improved system diagnostics.
3:18
Learn how to set-up the ISL78610 and ISL78600 evaluation boards in daisy chain configurations and watch a quick overview of the GUI software.
7:12
The ISL78610 is an AEC-Q100 compliant, automotive grade battery monitor and management IC, intended for use with Lithium chemistry batteries.
8:14
This webinar discusses the ISL78693 AEC-Q100 automotive-grade, fully integrated, 3.6V single-cell battery charger for LiFePO? batteries.
3:26
Advanced multi-cell balancing solutions improve vehicle safety through unmatched measurement accuracy and improved system diagnostics.
3:18
Learn how to set-up the ISL78610 and ISL78600 evaluation boards in daisy chain configurations and watch a quick overview of the GUI software.
7:12
The ISL78610 is an AEC-Q100 compliant, automotive grade battery monitor and management IC, intended for use with Lithium chemistry batteries.
8:14
This webinar discusses the ISL78693 AEC-Q100 automotive-grade, fully integrated, 3.6V single-cell battery charger for LiFePO? batteries.

相关评估板和套件

ISL78714XB-EVKIT1Z Evaluation Kit

ISL78714XB-EVKIT1Z 评估套件

ISL78714XB-EVKIT1Z 是一款评估套件,可辅助测试 ISL78714 锂电池组模拟前端 IC。

ISL78714BMS5XB-EVKIT1Z Reference Design Board

ISL78714BMS5XBEKIT1Z 参考设计套件

ISL78714BMS5XBEKIT1Z 套件有助于测试汽车 BMS 解决方案中的 ISL78714 锂离子电池管理器 IC 和 RH850 MCU。

ISL78610EVKIT1Z 电池监控器评估板

ISL78610EVKIT1Z 评估套件

ISL78610EVKIT1Z 是一款用于评估 ISL78610 锂电池组模拟前端 IC 的套件。

ISL78600EVKIT1Z 电池管理器评估板

ISL78600EVKIT1Z 评估套件

ISL78600EVKIT1Z 是一款用于评估 ISL78600 锂电池组模拟前端 IC 的套件。

ISL78693EVAL1Z 车载 LiFePO4 电池充电器评估板

ISL78693EVAL1Z 评估板

ISL78693EVAL1Z 可评估 ISL78693 集成单节车载 LiFEPO4 电池充电器的性能。

ISL78692EVAL1Z 车载 LiFePO4 电池充电器评估板

ISL78692EVAL1Z 评估板

ISL78692EVAL1Z 板是 ISL78692 单节锂离子电池充电器的评估平台。

Action Needed