Title :
New Current Sensing Circuit for Hysteresis-Current-Controlled Buck Converters
Author :
Chen, Jiann-Jong ; Hwang, Yuh-Shyan ; Su, Juing-Huei ; Shih, Wei-Chung
Author_Institution :
Dept. of Electron. Eng., Nat. Taipei Univ. of Technol.
Abstract :
A dual-purpose current sensing circuit, which can fully measure the inductor current suitable for hysteresis-current-controlled buck/buck-boost converter is proposed. The current sensing circuit, control circuit and power MOSFETs are integrated into a single chip. Using the same proposed chip, the buck and buck-boost converter can be synthesized. The dual-purpose is implemented with TSMC0.35 m CMOS DPQM processes. The chip area is only 2.25 mm2. The power efficiency of proposed converter can be up to 90%
Keywords :
electric current control; power MOSFET; power convertors; CMOS DPQM processes; buck-boost converter; control circuit; current sensing circuit; hysteresis-current-controlled buck converters; inductor current; power MOSFET; Buck converters; Circuits; Current measurement; Hysteresis; Inductors; MOSFETs; Resistors; Switches; Switching converters; Voltage; dc-dc convertyer; hysteresis current controlled;
Conference_Titel :
Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-9296-5
DOI :
10.1109/PEDS.2005.1619729
