Title :
A hysteretic boost regulator with Emulated-Ramp Feedback (ERF) current-sensing technique for LED driving applications
Author :
Jhih-Sian Guo ; Shih-Mei Lin ; Chien-Hung Tsai
Author_Institution :
Dept. of Electr. Eng. / Adv. Optoelectron. Technol. Center (AOTC) / Green Energy Electron. Res. Center (GREERC), Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
An inductor switching hysteretic control boost DC-DC regulator is presented in this paper with a newly proposed current-sensing technique named “Emulated-Ramp Feedback, ERF”. A boost regulator with a chip verification which achieves a simple structure and low cost is presented for LED driving applications. The regulator was fabricated in a TSMC 0.25μm high voltage (HV) CMOS process with a specification of 5V to 12V in a 0-300mA load range. And a peak efficiency of 92.1% is achieved with only 1.014mm2 chip area.
Keywords :
CMOS integrated circuits; DC-DC power convertors; circuit feedback; electric current measurement; inductors; light emitting diodes; switching convertors; voltage regulators; ERF; LED driving applications; TSMC high voltage CMOS process; chip verification; current 0 mA to 300 mA; emulated-ramp feedback current-sensing technique; hysteretic boost regulator; inductor switching hysteretic control boost DC-DC regulator; size 0.25 mum; voltage 5 V to 12 V; Generators; Inductors; Light emitting diodes; Regulators; Switches; Voltage control; Hysteretic control; boost dc-dc regulator; emulated-ramp feedback (ERF); light-emitting diode (LED); ripple-based control (RBC); synthetic-mode;
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2013 IEEE Asian
Conference_Location :
Singapore
Print_ISBN :
978-1-4799-0277-4
DOI :
10.1109/ASSCC.2013.6690982
