HV switch using differential voltage shaping driver for 13 series li-ion battery cells BMS

This paper presents a HV switch for the 13 series Li-ion battery cells. In order to operate at the large current of 1.0 A with the battery voltage of 46.68 V, the Differential Voltage Shaping Driver is employed to improve the slew rate of the driving voltage by 77.9%. Besides, the isolation is improved from -46.182 dB to -52.254 dB. The proposed design is implemented using a typical 0.25 um 1P3M 60V BCD process.