Title :
Ultra-fast hysteretic single-inductor-dual-output boost regulator with predictable noise spectrum and minimized cross-regulation
Author :
Jing, Xiaocheng ; Mok, Philip K T
Author_Institution :
Hong Kong Univ. of Sci. & Technol., Hong Kong, China
Abstract :
A novel single-inductor-dual-output (SIDO) boost regulator with hysteretic control to minimize the cross interference and enable a fast transient response is presented. In order to have a predictable system switching noise spectrum, the switching frequency of the converter is synchronized to multiple fraction of a predefined high frequency according to the loads and during transient. A boost converter with 1.8V-2.4V input voltage, two regulated output voltages between 3.0V and 3.6V, each with maximum 500mA driving capability, is implemented with a 0.35μm CMOS process. Simulation results show that the load transient response time is less than 5μs and no noticeable cross-regulation can be observed when load current changes from 10mA to 500mA.
Keywords :
CMOS integrated circuits; hysteresis; integrated circuit noise; switching convertors; transient response; CMOS process; boost converter; cross interference minimization; cross-regulation; current 10 mA to 500 mA; hysteretic control; load transient response time; predictable noise spectrum; size 0.35 mum; ultrafast hysteretic single-inductor-dual-output boost regulator; voltage 1.8 V to 2.4 V; voltage 3.0 V to 3.6 V; Control systems; Inductors; Manganese; Switching converters; Synchronization; Transient analysis; Transient response;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937560
