Renesas battery management IC maximizes battery cell life for EV


Renesas Electronics, a supplier of advanced semiconductor solutions, has announced its fourth-generation lithium-ion (Li-ion) battery management IC that offers unmatched lifetime accuracy. The ISL78714 provides accurate cell voltage and temperature monitoring, along with cell balancing and extensive system diagnostics to protect 14-cell Li-ion battery packs while maximizing driving time and range for hybrid and electric vehicles (HEV/MHEV/PHEV/BEV).

“The ISL78714 battery management IC enables battery management systems with a best-in-class combination of battery pack monitoring accuracy, fast data acquisition, and fault checking features,” said Niall Lyne, Senior Director of Product Marketing and Applications, Automotive Mixed-Signal/Power and Video, Renesas Electronics Corporation. “Our Formula E technology partnership with Mahindra Racing is already helping them win on the race track. Together, we designed and integrated a low-voltage Li-ion battery management system featuring ISL78714 ICs and RH850 microcontrollers in Mahindra Racing electric race cars.”

The feature-rich ISL78714 monitors and balances up to 14 series connected cells with ±2mV accuracy across automotive temperature ranges, letting system designers make informed decisions based on absolute voltage levels. The ISL78714 includes a precision 14-bit analog-to-digital converter and associated data acquisition circuitry. The device also offers up to six external temperature inputs (two available from GPIOs) and includes fault detection and diagnostics for all key internal functions.

The ISL78714 meets the stringent reliability and performance requirements of battery pack systems for all EV variants including HEV/PHEV, with safety features enabling automotive manufacturers to achieve the ISO 26262 automotive safety integrity level (ASIL D). In addition, the ISL78714 monitors and reads back over/under voltage, temperature, open wire conditions, and fault status for 112 cells in less than 10ms, or 70 cells in 6.5ms.

Multiple ISL78714's can be connected together via a proprietary daisy chain that supports systems up to 420 cells (30 ICs) that provide industry-leading transient and EMC/EMI immunity, exceeding automotive requirements. The ISL78714's daisy-chain architecture uses low-cost capacitive or transformer isolation, or a combination of both, with twisted pair wiring to stack multiple battery packs together while protecting against hot plug and high voltage transients. A watchdog timer automatically shuts down a daisy-chained IC if communications is lost with the master MCU.

Key Features of ISL78714 Battery Management IC

• Monitors and manages up to 14 cell voltages with ±2mV measurement accuracy

• Robust two-wire daisy chain communications system using capacitor or transformer coupling up to 1 Mbps

• Fully differential cell input range of ±5V accommodates fuel cell and bus bar measurement requirements for aging battery packs

• 15-year board level accuracy (long term drift) of ±6mV @ ±6σ

• High diagnostic coverage for cell voltage and temperature measurements

• AEC-Q100 Grade-2 qualified and specified for operation from -40°C to +105°C

The Latest News, Brought To You By
Renesas battery management IC maximizes battery cell life for EV
Modified on Thursday 8th August 2019
Find all articles related to:
Renesas battery management IC maximizes battery cell life for EV
TaaS Technology Magazine
200 Tesco Stores Across UK Now Equipped With Free Charge Points
Onto Takes Delivery Of The First Units Of Their 1,100 Order Of The All-electric Renault ZOEs
Mobileye Starts Testing Self-driving Vehicles In Germany
Autotalks And Applied Information Partner To Help Emergency Vehicles Arrive Faster
HumanDrive’s Scenario-Based Testing Spurs Standardisation, Simplification And Automation In CAV Testing, Says HORIBA MIRA
FEV Launches New Solutions For High Voltage Battery Testing
BMW Group Plant Munich Gears Up For Fully-electric Future
Audi Researching Bidirectional Charging Technology
Kia And Jointly Invest In New Start-up Offering EV Mobility Services
LANXESS Launches New Group Initiative For E-mobility
Continental Wins Further Serial Orders For Intelligent Antennas And 5G Connectivity
Xpeng Motors Announces $500 Million Series C+ Financing
Volkswagen Launches Its New Charging Service We Charge
Production Of High-tech Components For The BMW INEXT Starts In Landshut
Mercedes-Benz AG Creates A New Unit For Its Drive System Competences: “Mercedes-Benz Drive Systems”
World’s First Validated And Registered Carbon Offset Project For EV Chargers Announced
Uber Acquires Routematch To Help Cities Provide More Accessible Public Transportation
Ford Introduces The All-electric Mustang Mach-E 1400
BYD’s Flagship Han EV Series Officially Goes On Sale
JuiceBar Introduces New Line Of Flexible EV Chargers
Mercedes-Benz EQS To Sport A Range Of 700 Kms
UK Based AFF Launches New Mobile EV Charging Service
EAV Launches New ECargo Chassis Cab Platform
UK’s First Battery Gigaplant Moves A Step Closer As Manufacturer Britishvolt And The Welsh Government Sign Landmark MoU
Search the news archive

To close this popup you can press escape or click the close icon.
Register - Step 1

You may choose to subscribe to the TaaS Magazine, the TaaS Newsletter, or both. You may also request additional information if required, before submitting your application.

Please subscribe me to:


You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in: