A 1S Direct Battery Attach Integrated Buck Voltage Regulator with 5 Stack Thin Gate 22nm FinFET CMOS Featuring Active Voltage Balancing and Cascaded Self Turn ON Drivers
A 1S direct battery attach buck converter with a 5 stack, thin gate FinFET power train delivers a peak efficiency of 89.2% for a 3.8V in to 1.8V out, with 10x higher power density ~15A/mm2) switching at up to 10x higher frequency (40MHz) using 4x 10x lower inductance (10 100nH) than state of the art. Cascaded self timed drivers and soft switching low side drivers minimize complexity in driving 10 individual power switches safely.
2021 Symposium on VLSI Circuits