가변 피드포워드 Gm을 이용해 적응형 Quiescent 전류 제어 기법을 적용한 출력 커패시터가 없는 LDO 레귤레이터

An adaptive quiescent-current controlled LDO using a variable feedforward Gm cell is proposed. For a light load, the feedforward Gm increases and moves the non-dominant pole to a higher frequency. For a heavy load, Gm decreases to enhance the maximum efficiency of the LDO. The proposed LDO achieves a maximum current efficiency of 99.98 % with a worst case phase margin of 61.2 degree.