Title :
A full differential Enhanced Pseudo-Type III compensator for DC-DC converter
Author :
Yushi Liu ; Shaowei Zhen ; Junxi Wang ; Yu Geng ; Ping Luo ; Yajuan He
Author_Institution :
State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A novel full differential Enhanced Pseudo-Type III (EPT3) compensator for DC-DC converter is presented in this paper. The proposed EPT3 compensator achieves same transfer function as conventional Type III compensator by combination of voltages compensated by Phase Lead Compensator and compensated by Low-Pass filter. Besides, the compensator utilizes full differential configuration to suppress the common mode noise and avoid crosstalk from the ground, which makes the compensator suitable for integration in Power Management Unit (PMU). A buck converter with this compensator is designed in 0.13μm CMOS process. Simulation results show recover time of 13μs for load transient at 400mA step and the phase margin of 68° with much smaller passive components (C=12pF, R=500kΩ) than Pseudo Type III compensator.
Keywords :
CMOS integrated circuits; DC-DC power convertors; compensation; energy management systems; interference suppression; low-pass filters; transfer functions; CMOS process; DC-DC converter; EPT3 compensator; PMU; buck converter; common mode noise suppression; crosstalk avoidance; current 400 mA; differential enhanced pseudo-type III compensator; load transient; low-pass filter; passive components; phase lead compensator; phase margin; power management unit; size 0.13 mum; time 13 mus; transfer function; voltage compensation; Band-pass filters; Crosstalk; Low-pass filters; Noise; Phasor measurement units; System-on-chip; Transfer functions;
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2013 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3050-0
DOI :
10.1109/ICCCAS.2013.6765359
