Title :
A 10–25MHz, 600mA buck converter using time-based PID compensator with 2µA/MHz quiescent current, 94% peak efficiency, and 1MHz BW
Author :
Khan, Qadeer ; Seong Joong Kim ; Talegaonkar, Mrunmay ; Elshazly, Amr ; Rao, Akhila ; Griesert, Nathanael ; Winter, Greg ; McIntyre, William ; Hanumolu, Pavan Kumar
Author_Institution :
Oregon State Univ., Corvallis, OR, USA
Abstract :
A time-based PID compensator that combines the advantages of both analog and digital controllers is used to implement a high frequency low quiescent current buck converter. Fabricated in 180nm CMOS process, the proposed buck converter operates over a wide range of switching frequencies (10-25MHz) and achieves better than 94% peak efficiency while consuming a quiescent current of only 2μA/MHz.
Keywords :
CMOS integrated circuits; DC-DC power convertors; compensation; digital control; three-term control; CMOS process; DC-DC converters; analog controllers; bandwidth 1 MHz; digital controllers; frequency 10 MHz to 25 MHz; high frequency low quiescent current buck converter; size 180 nm; time-based PID compensator; Bandwidth; Current measurement; PD control; Pulse width modulation; Switching frequency; Transient response; Voltage control;
Conference_Titel :
VLSI Circuits Digest of Technical Papers, 2014 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4799-3327-3
DOI :
10.1109/VLSIC.2014.6858439
