This reference design is a dual-channel: bidirectional converter suitable for 12-V to 12-V: dual-battery system: automotive applications. This reference design has a wide input range (3 V to 40 V) and could give full load (1kW) in the input voltage from 9V to 18V by using two LM5170-Q1 controllers. The efficiency is up to 98% at Vin = 18V: Vout = 12V: Iout = 40A.