ESS – Battery management system (BMS)

Products and reference designs

ESS – Battery management system (BMS)

Block diagram

Overview

Our battery management integrated circuits and reference designs help you accelerate development of battery energy storage systems, improving power density and efficiency while providing real-time monitoring and protection.

Design requirements

  • High efficiency and power density.
  • Faster and cooler charging.
  • Accurate gauging and monitoring.
  • Secure authentication and protection.

Block diagram

Find products and reference designs for your system.

Single module battery

Cell balancing MOSFETs/BJT Cell balancingMOSFETs/BJT …… …… …… …… …… …… BAT- BAT- BAT+ BAT+ PACK+ PACK+ PACK- PACK- Data Data Power Power Power Power Shunt Shunt Iso-power Iso-power Iso-power Iso-power Auxiliary power supply Auxiliary power supply LDO LDO DC/DC DC/DC Isolated converter Isolated converter Communication Communication RS-485 RS-485 CAN CAN ESD ESD Isolation Isolation Ethernet PHY Ethernet PHY Battery cell & pack monitoring unit Battery cell & pack monitoring unit AFE/Monitor AFE/Monitor Temp Senser Temp Senser AFE/Monitor AFE/Monitor Secondary Protector Secondary Protector Secondary protector Secondary protector Temp senser Temp senser ADC ADC Current sensing Current sensing Op-Amp Op-Amp Battery control unit Battery control unit MCU MCU ESD ESD Isolation Isolation RTC RTC Watchdog Watchdog Supervisor Supervisor Switching stage Switching stage MV-MOSFET MV-MOSFET Gate driver Gate driver Relay driver Relay driver Relay Relay

Technical documentation

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Type Title Date
White paper Wide VIN power management ICs simplify white paper (Rev. A) 23 Oct 2013
White paper Smart power opens door to more efficient electrical use 21 Mar 2016
Analog Design Journal Cell balancing buys extra run time and battery life 17 Mar 2009
Application note Lead Acid battery monitoring for Power Back-Up Inverters using bq34z110 17 Apr 2014
White paper Capacitive touch building security system equipment using MSP430™ MCUs (Rev. A) 12 Dec 2024
Product overview Industry’s Most Efficient Nano Power Harvesting Solutions (Rev. A) 08 Nov 2013
Application note bq769x0 Family Top 10 Design Considerations (Rev. A) PDF | HTML 05 Jul 2018

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