New signal transformers for battery monitoring applications meet automotive standard

RS Components has availability of a pair of BMS signal transformers from Bourns. The new SM91501AL and SM91502AL are dual and single-channel isolation transformer modules, respectively, with both devices providing common-mode chokes for noise rejection in BMS applications. Providing compliance with the AEC-Q200 standard for automotive applications, the modules are also used in reference designs together with Analog Device’s LTC6804-1/6811 and NXP’s MC33771/33772 battery monitoring devices. Additional electrical characteristics comprise working voltages of 1600VDC and 1000VDC for the SM91501AL and SM91502AL, respectively, and a 4300VDC high-potential isolation voltage. Other options of the models incorporate an extended temperature range from –40C to +125C; support for serial daisy-chain isoSPI communication; and compliance with the RoHS directive.