Signal transformers suit automotive battery monitoring applications
13 December 2018 
The SM91501AL and SM91502AL are dual- and single-channel isolation transformer modules, respectively. Both devices offering common-mode chokes for noise rejection in battery monitoring system (BMS) applications. They comply with the AEC-Q200 standard for automotive applications, and are also implemented in reference designs with Analog Device’s LTC6804-1/6811 and NXP’s MC33771/33772 battery monitoring devices.
Electrical characteristics include working voltages of 1600 and 1000V DC for the SM91501AL and SM91502AL, respectively, and a 4300V DC high-potential isolation voltage. They operate at the extended temperature range of -40 to +125°C. There is also support for serial daisy-chain isoSPI communication and the devices comply with the RoHS directive.
The Bourns SM91501AL and SM91502AL are shipping from RS Components in the EMEA and Asia Pacific regions.