A Voltage Monitoring IC With HV Multiplexer and HV Transceiver for Battery Management Systems

A high voltage multiplexer with rail to rail output swing for battery management system applications

“…As a result, the proposed HV MUX topology without a subtraction circuit compared to [4] and [5] is more feasible in BMS. Moreover, the tolerance for large on resistance of drain extended MOS means small device size, reducing the chip area and power dissipation significantly.…”

“…The availability of Bipolar-CMOS-DMOS (BCD) technology with high breakdown voltage has eliminated these limitations. In order to realize improved accuracy with reduced power dissipation, various topologies for HV MUX based on BCD technologies have been reported [4,5,6]. A multi-channel high voltage analog MUX with digital calibration for BMS using a 0.25 µm 1P3M (1-poly 3-metal) 60 V BCD process is presented in [4].…”

“…A multi-channel high voltage analog MUX with digital calibration for BMS using a 0.25 µm 1P3M (1-poly 3-metal) 60 V BCD process is presented in [4]. A voltage monitoring IC with HV MUX and HV transceiver for the battery interconnect module (BIM) in a battery management systems (BMSs) is proposed in [5]. In [4] and [5], the HV input signals are first stepped down to low voltage using a subtracting circuit and then sampled.…”

“…A voltage monitoring IC with HV MUX and HV transceiver for the battery interconnect module (BIM) in a battery management systems (BMSs) is proposed in [5]. In [4] and [5], the HV input signals are first stepped down to low voltage using a subtracting circuit and then sampled. Rail to rail output is also required for HV MUX.…”

Electromagnetic Susceptibility of Battery Management Systems’ ICs for Electric Vehicles: Experimental Study

“…Critical safety EMI-induced failures could be also a major threat to the safety in emerging electric and hybrid electric (EV/HEV) vehicles powered by batteries [7]. A battery management system (BMS) IC manages the state of charge of the battery pack, protecting it from operating outside its safe operating conditions [8][9][10][11][12][13]. Electromagnetic interference can be easily picked up by the long wires that connect BMS front-end ICs to each other, to the BMS control unit, to the terminals of the electrochemical cells and to the temperature sensors, which are spatially distributed over the whole battery pack module [14], and can easily impair the operation of data acquisition circuits [15][16][17][18].…”