概要

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 ºC to +105 ºC.

An NDA is required for the full datasheet. Please contact your local Renesas sales representative for more information.

ISL78714 Functional Diagram
ISL78714 Functional Diagram
  • Monitors and manages up to 14 cells; all standard Li-ion cell chemistries
  • AEC-Q100 qualified, supports ASIL D systems
  • Robust two-wire daisy chain communications system using a capacitor or transformer coupling at up to 1Mbps
  • High-coverage communication protocol based on ISO 26262
  • Cell voltage measurement accuracy 1.65V to 4.28V; -20 ºC to +85 ºC:
    • Initial Device accuracy: ±2mV
    • Post board assembly device accuracy: ±2.5mV
  • Cell input range: ±5.0V, negative voltages ideal for bus bars and fuel cells
  • 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
  • Long term drift: -0.31 log(khrs)
  • Fully tolerant to EMC and transients – excellent Hot Plug performance
  • Available Complex Device Driver software follows AUTOSAR, Aspice, and ISO 26262 ASIL-D development processes
    • Configuration and integration of required MCAL modules provided by Renesas for the RH850 MCU

アプリケーション

  • Automotive Battery Management Systems (BMS)
    • Battery Electric Vehicle (BEV)
    • Hybrid Electric Vehicle (HEV)
    • Plug-in Hybrid Electric Vehicle (PHEV)
  • Electric motorcycle battery packs
  • Backup battery and energy storage systems requiring high accuracy management and monitoring
  • Portable and semi-portable equipment

ドキュメント

= ピックアップ
分類 タイトル 日時
データシート－簡略版
ISL78714 Short-Form Datasheet
PDF 208 KB
カタログ
アナログIC　カタログ
PDF 5.40 MB 英語
データシート
ISL78714 Datasheet
ログインしてダウンロード PDF 2.00 MB
ホワイトペーパー
Putting Safety into Li-ion Battery Packs
PDF 451 KB 简体中文
ホワイトペーパー
Battery Management System Tutorial
PDF 451 KB 简体中文
アプリケーションノート
AN1975: Use of Optocouplers in Battery Management Systems
PDF 389 KB
6 items

設計・開発

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車載BMSアプリケーションモデル&ソフトウェア
BMSアプリケーションモデルとソフトウェアは、充電状態と劣化状態を推定するためのアプリケーション開発の労力と時間を削減します。
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1 item

ボード＆キット

ISL78714BMS5XB-EVKIT1Z Reference Design Board

ISL78714BMS5XBEKIT1Z

Reference
詳しくはこちら

車載グレード・マルチセル・リチウムイオンバッテリ制御システム評価キット

ISL78714BMS5XBEKIT1Zは、車載バッテリ管理システム（BMS)ソリューションに適したデバイス ISL78714 および RH850(MCU) の評価を行うリファレンスデザインキットです。RH850はISL78714と連携し、セル電圧、パック温度、電流をモニタリングすると共に、重大エラーの検出と...

主要ドキュメント:
ISL78714BMS5XBEKIT1Z BMS Reference Design Kit Manual
ISL78714XB-EVKIT1Z Evaluation Kit

ISL78714XB-EVKIT1Z

Evaluation
詳しくはこちら

車載グレード・マルチセル・リチウムイオンバッテリ制御システム評価キット

ISL78714XB-EVKIT1Zは、リチウムイオン・バッテリパックのアナログ・フロントエンド用IC (ISL78714) の評価キットです。ISL78714は、セル電圧と温度をモニタ可能であり、14bit長のデータを取り扱えます。また、セル間のバランス制御を行う機能や、重大なエラーを検出する機能も有しています。ISL78714には...

主要ドキュメント:
ISL78714 Short-Form Datasheet

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    circleアクティブ
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    		 TQFP Reel 3 サンプルを入手,
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