Title :
An on-chip current sensing technique for hysteresis current-controlled boost converters
Author :
Chiu, M.L. ; Chou, H.P.
Author_Institution :
Dept. of Eng. & Syst. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
A novel on-chip current sensing technique suitable for hysteresis-current-controlled (HCC) boost converters is presented. The proposed circuit senses low-side current information and charge/discharge a capacitor to generate the hysteresis band for the current mode controller. The proposed circuit does not need an operational amplifier; thus, it is simple and does not reduce the power efficiency. Simulation results verified the design and showed a good sensing accuracy. The chip is implemented with TSMC 0.25-μm CMOS HV processes.
Keywords :
CMOS integrated circuits; DC-DC power convertors; capacitors; electric sensing devices; DC-DC booster converter; TSMC CMOS HV processes; capacitor; current mode controller; hysteresis current-controlled boost converters; low-side current information; on-chip current sensing technique; operational amplifier; power efficiency; size 0.25 mum; Accuracy; Indexes; System-on-a-chip; Current sensing circuit; DC/DC Booster; Hysteresis Control;
Conference_Titel :
Power Electronics and Drive Systems (PEDS), 2011 IEEE Ninth International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-61284-999-7
Electronic_ISBN :
2164-5256
DOI :
10.1109/PEDS.2011.6147273
