A robust digital DC-DC converter with rail-to-rail output range in 40nm CMOS

Abstract

The growing complexity and small form factors of hand-held consumer electronics are the driving force of more integration. This increases the need for truly embedded DC-DC converters in advanced processes. Traditional analog DC-DC converter architectures do not fit well with low supply voltages. Digital architectures are attractive, but require an analog-to-digital converter (ADC), which can be challenging to design [1–3].