AUTONOMOUS & CONNECTED VEHICLES
TONY ARMSTRONG | ANALOG DEVICES INC.
How bidirectional converters speed the design of dual-battery automotive systems New standards for combined 48-V/12-V vehicles dictate stringent tests for overvoltages and currents that new converter ICs can help meet.
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DESIGN WORLD — EE NETWORK
ADI — A&CV HB 08-19_v2.indd 6
The 48/12-V automotive battery system is just around the corner. Most major automobile manufacturers have been perfecting such systems for past few years, and it is evident that their first implementations will be relatively near term.
The typical 48/12-V system consists of two separate branches of power. The traditional 12-V bus uses a conventional sealed lead-acid (SLA) battery to handle traditional systems such as infotainment, lighting, and windows. The new 48-V system will support heavier loads such as the starter/generator, A/C compressors, electric turbochargers, and regenerative braking. Vehicle electrical components will either run off the 48-V Li-ion battery or the 12-V SLA – but not both. 8 • 2019
eeworldonline.com | designworldonline.com
8/9/19 10:12 AM
