PRODUCT BRIEF Industrial Consumer Intersil Industrial and Consumer Solutions Intersil’s Battery Pack Monitoring, Protection and Balancing Solutions Intersil’s Li-Ion battery pack monitoring, protection and balancing IC’s are specifically designed to meet the stringent safety, reliability and performance requirements of portable and battery powered applications such as consumer products, home appliances, battery backup and e-motor/e-bikes. Key Components ISL94212 Multi Cell Battery Management and Balancing IC The IC’s incorporate built-in fault detection for all major internal functions and detect external faults such as open wire, over and under voltage as well as temperature and cell balancing faults to mitigate battery pack failures. ISL94203 3-8 Cell Li-Ion Battery Pack Manager ISL94208 4 - 6 Cell Li-Ion Battery Management Analog Front End Overall the highly integrated functionality of the ISL94212, ISL94203 and ISL94208 offer a number of benefits and their use can significantly reduce overall battery management costs. ISL94212 ISL94212EVZ Multi Cell Battery Management and Balancing IC ISL94212 • Supervises up to 12 cells • Daisy chain capable up to 14 devices or 168 cells • Cell voltage measurement accuracy -- ±10mV from 0 to 50ºC, 2.6 to 4.0V • Cell voltage scan rate of 20µs per cell • Simple daisy chain communications -- Low cost twisted pair wiring for stacking -- Capacitive isolation • 2.5Mbps SPI - Stand alone & Daisy Chain • Integrated system diagnostic functions: -- Cell over and under voltage -- Over temperature -- Open cell monitoring wires -- Open temperature monitoring wires -- VBAT and VSS connection integrity -- Voltage reference function -- Oscillator function -- Watchdog shutdown of IC if communications are lost • Robust Hot-Plug performance -- No hazardous conditions due to random connection of battery pack or cell wiring -- No degradation due to hot plugging • Extensive Cell Balance Control -- Built-in cell balance FET drivers -- Automatic cell balance based on manual control by µC, time, or target capacity VC12 DHi 2 CONTROL LOGIC AND COMMUNICATIONS Key Features VBAT CB12 VC11 CB11 VC10 CB10 VC7 CB7 VC6 CB6 VC5 CB5 VC4 CB4 SPI COMMS CS/DLo 1 DIN DOUT DATA READY COMMS RATE 1 COMMS RATE 0 COMMS SELECT 2 COMMS SELECT 1 DGND FAULT EN BASE VREG V3P3 VDDEXT V2P5 V2P5 VCC VREF MUX VC8 CB8 SCLK/DHi 1 DAISY CHAIN AND REF VC MUX CB9 INPUT BUFFER/LEVEL SHIFT AND FAULT DETECTION VC9 DLo 2 VC3 ADC CB3 TEMPREG VC2 VC0 VSS IC TEMP VC1 CB1 REFERENCE TEMP MUX CB2 ExT1 ExT2 ExT3 ExT4 www.intersil.com/products/ISL94212 WWW.INTERSIL.COM 1 PRODUCT BRIEF Intersil Industrial and Consumer Solutions Intersil’s Battery Pack Monitoring, Protection and Balancing Solutions ISL94203 ISL94203EVAL1Z 3-8 Cell Li-Ion Battery Pack Manager Key Features • Complete stand alone operation -- Stand-alone pack control - No microcontroller needed -- Operating parameters programmed in EEPROM • Can be used as a front end for an external microcontroller -- µC can override some or all of the automatic features. • For 3 to 8 cell applications -- Support LiIon CoO2, Li-Ion Mn2O4, and Li-Ion FePO4 chemistries -- Pack voltages from 6 to 36V -- Monitors cell voltages from 0 to 4.8V P+ CB7 VC6 INT RGO CHRG ISL94203 SD EOC SCL SDA TEMPO CB4 VC3 CB3 VC2 CB2 VC1 GND CHMON FETSOFF CB5 VC4 • Protects battery pack and IC • Automatically balance cells • Measures cell voltages • Monitors pack current and direction • Provides diagnostic information • Designed to withstand battery stack hot plug events C2 C3 PSD CB8 VC7 CB6 VC5 Functions LDMON C1 DFET VDD CFET VBATT VC8 PCFET CS2 43V CS1 43V CB1 VC0 xT1 xT2 VREF VSS ADDR P- www.intersil.com/products/ISL94203 ISL94208 ISL94208EVZ 4 - 6 Cell Li-Ion Battery Management Analog Front End P+ Key Features VCC • Used as a front end for an external microcontroller -- Provides analog voltage out – converted by external µC -- Incorporates charge/discharge FET drive -- Supports internal or external passive cell balancing FETs • Includes automatic over current shutdown of power FETs • For 4 to 6 cell applications -- Pack voltages from 8 to 27V VCELL6 CB6 • Protects battery pack from over current conditions • Balances cells on command from µC • Cell voltage measurement • Measurement of temperature • 3.3V regulator for pack electronics • Diagnostic information www.intersil.com/products/ISL94208 WWW.INTERSIL.COM 200Ω 200Ω 200Ω VCELL0 B- VSS 1.2MΩ RGC VCELL5 CB5 VCELL4 CB4 VFET2 VCELL3 CB3 VFET1 VCELL2 CB2 VBACK VCELL1 CB1 1.8MΩ RGO SCL SDA TEMPI TEMP3V AO VMON CFET µC SCL SDA INT VCC 1µF RESET A/D INPUT I/O CHRG 100Ω 3.6V DFET DSENSE THERM 200Ω WKUP CSENSE 200Ω ISL94208 ISREF Functions 200Ω 500Ω P- For more information about Intersil’s Industrial Products, contact your local sales office. 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